Panasonic KX-FPC91 Page 245 Service Manual Download

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14.5. HANDSET BOARD

45 mV

6 mV

TX
INPUT

22 mV

55 mV

3.9 V

92 mV

22 mV

75 mV

150 mV

(

1kHz TONE
6kHzdivi

50 mV

22 mV

3.5 V

32kHz

2.8 V

4MHz

RX Signal

TX Signal

L201

D201

Q203

Q204

D203

6.3V 220u

C905

100K

VR201

32KHz

X901

D202

6.3V/330u

C226

D901

6.3V 10u

C225

LED903

PROGRAM

KEY1

KEY2

PAUSE

CN201

HEADSET JACK SOCKET

GND

MIC1

MIC2

SP2

SP1

D204

50K

VR202

REMOTESP

FLASH

LOUD

REDIAL

( )

D913

( )

D911

( )

D914

TALK

AUTO

DIRECT

3.992MHz

X902

( )

D912

EXP

EVOL

VREF

COMP

ZAP

RESET
30ms

BATTLOW
3.5V

Power Down
3.2V

RXREG
3.0V

36mA

TXREG
3.0V

34mA

BGR

COMPANDER
REG
3.0V

SPAMP

Pre-AMP

Splatter
Filter

DATA-Filter

BOZ

IC201

SPVCC

SPGND

BTL

BOZSW

SPOUT

HSREF

SPREF

REF

SPSW

SPIN

EXPOUT

EV1

EV2

TXDET

GND1

VREF

SFOUT

SFIN

COMPOUT

COMPCONT

COMPDET

COMPIN

MICOUT

MIC1

MIC2

MICMUTE

RXSWOUT

TXREG

TXB

VCC1-2

VCC1-1

RXB

RXREG

/BATTLOW

/PWRDOWN

GND2

/RESET

ZMW

/TXPOWER

/RXPOWER

ZGND

ZME

PDIN

BLIN

DOUT2

DIN2

DOUT1

DIN1

VCC2-2

VCC2-1

VREG

PREIN

PREOUT

EXPDET

SPMUTE

Q201

D212

33K

R224

10K

R220

100K

R260

R229

10K

R274

R217

R921

2.2K

R208

R227

15K

100

R221

10K

R213

R231

R214

R216

2.2K

R226

10K

R904

680

2.2K

R241

R914

100

R911

R204

R272

R916

39K

R205

27K

R232

R280

220

R201

2.2K

R254

56K

R209

15K

R211

R222

10K

100

R910

12K

R206

100K

R210

R919

R913

15K

R240

R242

10K

330K

R902

R223

33K

R228

33K

R251

82K

R234

10K

R203

100K

R235

100

R920

330

R906

3.3K

R202

Z0.47u

C224

K0.068u

C217

K0.01u

C204

Z0.1u

C904

J100p

C238

K0.1u

C247

Z0.1u

C242

Z0.47u

C236

Z0.1u

C901

Z0.1u

C221

K0.1u

C210

Z0.1u

C262

K0.1u

C233

Z0.1u

C202

J18p

C906

C211

J100p

Z1.0u

C235

Z1.0u

C232

D4p

C268

J470p

C240

K1500p

C220

C230

Z1.0u

K8200p

C251

J100p

C203

K0.01u

C218

K4700p

C244

Z0.1u

C271

K0.1u

C213

K6800p

C228

6.3V 10u

C206

( )

R212

D205

D206

( )

R219

C222

6.3V 220u

Q205

6.3V 47u

C209

Q202

( )

J202

( )

C201

( )

C207

CN202

BATT+

BATT-

( ) J203

( ) R230

( )

C280

( )

C281

RFUNIT

AFIN

B+

RXPOW

PLLLOCK

PLLDATA

PLLCLOCK

PLLENA

TXPOW

GND

10 CARRIERSENS

11 AFOUT

12 RSSI

13 GND

14 ANT

( )

VR203

( )

R281

IC202

OUTPUT

GND

INPUT

DET

VCC

( )

C282

( ) R282

( )

C283

( )

L204

C269

18n

( )

R273

IC901

PLLLOCK

P11

P10

KR07

KR06

KR05

KR04

KR03

KR02

KR01

KR00

BEEP_CLK

VSS

VDD

XT2

XT1

/RESET

BEEP_CNT

MIC_MUTE

CHARGE

RXDATA

SQL

BAATLOW

PLLDATA

PLLCLK

PLLENA

TXPOWER

RXPOWER

POWERDOWN

L1_LED

INT’COM(L2)_LED

TALK_LED

BATTLOW_LED

VDD1

VSS1

SP_MUTE

KEYPAD_LED

VOL1

VOL2

TXDATA

LED902

( )

LED908

( )

R930

( )

C909

( )

R259

( )

C908

SPM

RXDATA

VDD

Vdd

SPP

TP_MIC

VSS

TP_TALK

VPP

TP212

SQL

GND

MOD

RECHARGE

CHARGE

ANT

Vss

RESET

MIC1

MIC2

( )

R907 NC

( )

R909 NC

( )

R912 NC

( )

R917 NC

( )

LED904 NC

( )

LED905

( )

LED906

( )

LED907

( )

Q901

( )

C263

( )

LED901

CLOCK

L202

L203

Z0.1u

C239

K0.01u

C219

K0.01u

C216

K0.01u

C212

K0.068u

C223

10K

R218

J100p

C246

100K

R236

R271

R915

27K

R233

K8200p

C253

Z1.0u

C237

K4700p

C214

15K

R215

100K

R207

K0.01u

C208

33K

R225

K3300p

C229

Z1.0u

C234

K0.1u

C259

K0.1u

C902

100

R922

100K

R905

R908

K0.1u

C231

K0.01u

C205

R901

J18p

C907

( )

R903 NC

C215

J100p

C270

CHG(+)

CHG(C)

CHG(-)

TO RINGER

TO MIC

TO SPEAKER

RINGER-

KX-FPC91

245

Summary of Contents for KX-FPC91

Page 1: ...00 Kyushu Matsushita Electric Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law KX FPC91 for U S A Compact Plain Paper FAX with Cordless Phone ORDER NO KMF0004404C1 F7 ...

Page 2: ...E IC INSTALLATION PROCEDURE 143 5 4 BRIDGE MODIFICATION PROCEDURE 143 6 CIRCUIT OPERATIONS 144 6 1 CONNECTION DIAGRAM 144 6 2 GENERAL BLOCK DIAGRAM 145 6 3 CONTROL SECTION 147 6 4 FACSIMILE SECTION 157 6 5 SENSORS AND SWITCHES 172 6 6 MODEM SECTION 176 6 7 DESCRIPTION OF BLOCK DIAGRAM IN ANALOG SECTION 183 6 8 NCU SECTION 185 6 9 ITS Integrated Telephone System AND MONITOR SECTION 187 6 10 TAM INT...

Page 3: ...14 4 POWER SUPPLY BOARD 244 14 5 HANDSET BOARD 245 14 6 CHARGE BOARD 246 3 KX FPC91 ...

Page 4: ...R SERVICE TECHNICIANS ICs and LSIs are vulnerable to static electricity When repairing the following precautions will help prevent recurring malfunctions 1 Cover the plastic part s boxes with aluminum foil 2 Ground the soldering irons 3 Use a conductive mat on the worktable 4 Do not touch the IC or LSI pins with bare fingers 1 4 BATTERY CAUTION CAUTION Danger of explosion if the battery is replace...

Page 5: ... times 1 6 PERSONAL SAFETY PRECAUTIONS 1 6 1 MOVING SECTIONS OF THE UNIT Be careful not to let your hair clothes fingers accessories etc become caught in any moving sections of the unit The moving sections of the unit are the rollers and a gear There is a separation roller and a document feed roller which are rotated by the document feed motor A gear rotates the two rollers Be careful not to touch...

Page 6: ...ays unplug the AC power cord before disassembling for service 1 7 SERVICE PRECAUTIONS 1 7 1 PRECAUTIONS TO PREVENT DAMAGE FROM STATIC ELECTRICITY Electrical charges accumulate on a person For instance clothes rubbing together can damage electric elements or change their electrical characteristics In order to prevent static electricity touch a metallic part that is grounded to release the static el...

Page 7: ...20 lb Automatic fax phone switching Distinctive ring detection The 15 second speed is based upon the ITU T No 1 Test Chart on the condition that memory transmission is performed Subscription to distinctive ring services is required Large Memory 28 pages Performed by DRAM Approx 28 pages of memory reception Approx 25 pages of memory transmission Integrated Telephone System On hook dialing Monitor s...

Page 8: ...ceiving a 20 black document Copy Approx 37 W When copying a 20 black document Maximum Approx 138 W When copying a 100 black document Power Supply 120 V AC 60 Hz Memory Capacity Approx 28 pages memory reception Approx 25 pages memory transmission Based on ITU T No 1 Test Chart in standard resolution Handset Operating Environment 5 C 35 C 41 F 95 F 45 85 RH Relative Humidity Dimensions H W D Approx ...

Page 9: ...1 10 OPTIONAL ACCESSORIES 9 KX FPC91 ...

Page 10: ...1 11 TEST CHART 1 11 1 ITU T No 1 TEST CHART 10 KX FPC91 ...

Page 11: ...1 11 2 ITU T No 2 TEST CHART 11 KX FPC91 ...

Page 12: ...TION OF CONTROLS 1 12 1 OVERVIEW Note The document will be ejected from the front of the unit Install the unit on a desk or floor with a smooth surface and do not place anything in front of the unit 12 KX FPC91 ...

Page 13: ...1 12 2 CONTROL PANEL 13 KX FPC91 ...

Page 14: ...1 12 3 HANDSET 14 KX FPC91 ...

Page 15: ...mmend the use of a surge protector The following types are available TELESPIKE BLOK MODEL TSB TRIPPE MFG CO SPIKE BLOK MODEL SK6 0 TRIPPE MFG CO SUPER MAX PANAMAX or MP1 ITW LINX The warranty does not cover damage due to power line surges or lightning When you operate this product the power outlet should be near the product and easily accessible If you want to connect an answering machine to the u...

Page 16: ...to 35 C Relative humidity 20 to 80 without condensation Power cord length should be less than 5 meters 16 4 feet Using a longer cord may reduce the voltage or cause malfunctions Avoid direct sunlight Do not install near devices which contain magnets or generate magnetic fields Do not subject the unit to strong physical shock or vibration Keep the unit clean Dust accumulation can prevent the unit f...

Page 17: ...t on the back of the unit and then insert the other tab into the other slot Note Do not place the unit in areas where the paper tray may be obstructed by a wall etc To use legal size paper Please purchase a legal paper tray Model No KX FA50 and install as shown above 17 KX FPC91 ...

Page 18: ... over the tab If the paper is not inserted correctly readjust the paper or the paper may jam Note for recording paper Avoid paper with a cotton and or fiber content that is over 20 such as letterhead paper or paper used for resumes Do not use different types or thicknesses of paper at the same time This may cause a paper jam Avoid extremely smooth or shiny paper that is highly textured Avoid paper...

Page 19: ...FEED Note Remove chips staples or other similar fastening objects Check that ink paste or correction fluid has dried Do not send the following types of documents Use copies for fax transmission Chemically treated paper such as carbon or carbon less duplicating paper Electrostatically charged paper Heavily curled creased or torn paper Paper with a coated surface Paper with a faint image Paper with ...

Page 20: ...ce and press six times 5 Press 6 Press Note You can enter your logo by rotating To correct a mistake Press or to move the cursor to the incorrect character then make the correction To insert a character 1 Press or to move the cursor to the position to the right of where you want to insert the character 2 Press HANDSET LOCATOR Insert to insert a space and enter the character To delete a character M...

Page 21: ...ead of pressing the dial keys you can select characters using the JOG DIAL 1 Rotate unit the desired character is displayed 2 Press to move the cursor to the next space The character displayed in step 1 is inserted 3 Return to step 1 to enter the next character Display order of characters 21 KX FPC91 ...

Page 22: ...or replacement Each roll prints about 150 letter size pages Refer to 1 10 OPTIONAL ACCESSORIES P 9 Model No KX FA53 Replacement film 1 roll Model No KX FA55 Replacement film 2 rolls 1 Open the front cover by pulling up the center part 2 Push the back cover open button and open the back cover 3 Pull up the blue gear side and remove the used ink film Remove the used core 22 KX FPC91 ...

Page 23: ...t Insert the back ink film roll 6 If the ink film is slack tighten it by winding the gear 7 Close the back cover securely by pushing down on the dotted area at both ends Close the front cover securely The following message will be displayed while the unit is checking that there is no slack on the ink film Display Note The ink film is completely safe to touch and will not rub off on your hands like...

Page 24: ...he battery lead and remove the battery 3 Connect the new battery lead and insert the battery into the handset 4 Replace the handset cover on the handset Be sure to charge the new battery for about 4 hours Note Use only a Panasonic rechargeable battery Model No KX A36 The product you have purchased is powered by nickel cadmium battery which is recyclable At the end of its useful life under various ...

Page 25: ...ly charged the battery life will last as follows While in use Up to about 8 hours on conversation While not in use Up to about 21 days stand by off the main unit Note Battery life may vary depending on usage conditions and ambient temperature 25 KX FPC91 ...

Page 26: ...ing and communication testing to determine if the problem originates from the transmitter receiver or the telephone line 4 Determine causes Determine the causes of the equipment problem by troubleshooting 5 Equipment repairs Repair or replace the defective parts and take appropriate measures at this stage to ensure that the problem will not recur 6 Confirm normal operation of the equipment After c...

Page 27: ...1 15 2 MAINTENANCE CHECK ITEMS COMPONENT LOCATIONS 27 KX FPC91 ...

Page 28: ...ENNA P 131 6 Glass If the glass is dirty clean them with a dry soft cloth Refer to 1 15 3 MAINTENANCE P 29 7 Abnormal wear and tear or loose parts Replace the part Check if the screws are tight on all parts 1 15 2 2 MAINTENANCE CYCLE No Item Cleaning Cycle Replacement Cycle Procedure 1 Separation Roller Ref No 117 3 months 7 years 100 000 documents Refer to 4 6 HOW TO REMOVE THE SEPARATION ROLLER ...

Page 29: ...e paper products such as paper towels or tissues to clean the inside of the unit 1 15 3 2 CLEANING THE THERMAL HEAD If dirty patterns or black or white bands appear on a copied or received document clean the thermal head 1 Disconnect the power cord and the telephone line cord 2 Open the front cover by pulling up the center part 3 Open the back cover by pushing the back cover open button 4 Clean th...

Page 30: ...LEANING THE PICKUP ROLLER Refer to 4 10 HOW TO REMOVE THE PICKUP ROLLER P 138 1 15 4 CHARGE CONTACTS Clean the charge contacts with a dry soft cloth once a month or the battery may not charge properly 30 KX FPC91 ...

Page 31: ...hout any slack 2 Before troubleshooting first check that the connectors and cables are connected correctly not loose If the problem occurs randomly check it very carefully 3 When connecting the AC power cord with the unit and checking the operation exercise utmost care when handling electric parts in order to avoid electric shocks and short circuits 4 After troubleshooting double check that you ha...

Page 32: ... servicemen only CROSS REFERENCE 2 2 1 DOCUMENT JAMS P 33 2 2 2 RECORDING PAPER JAMS P 34 3 ADJUSTMENTS P 120 2 2 USER RECOVERABLE ERRORS If the unit detects a problem one or more of the following messages will appear on the display 32 KX FPC91 ...

Page 33: ...y 2 2 1 DOCUMENT JAMS If the unit does not release the document during feeding remove the jammed document as follows 1 Open the front cover by pulling up the center part 2 Remove the jammed document carefully 3 Close the front cover securely Note Do not pull out the jammed paper forcibly before opening the front cover 33 KX FPC91 ...

Page 34: ...g paper has jammed and the display will show the following massage When paper has jammed under the film cartridge Display Remove the jammed paper as follows 1 Open the front cover by pulling up the center part 2 Push the back cover open button and open the back cover 3 Remove the jammed recording paper 34 KX FPC91 ...

Page 35: ... 4 If the ink film is slack tighten it by winding the gears 5 Close the back cover securely by pushing down on the dotted area at both ends Close the front cover securely 35 KX FPC91 ...

Page 36: ...t expressions for the same problem as they are not a technician or engineer Using your experience test the problem area corresponding to the claim Also returns from a customer or dealer often have a claim tag For these cases as well you need to determine the problem Test the unit using the simple check list on 2 3 3 1 SIMPLE CHECK LIST P 38 Difficult problems may be hard to determine so repeated t...

Page 37: ...ABLE CROSS REFERENCE 2 3 4 ADF Auto Document Feed SECTION P 39 2 3 5 COMMUNICATION SECTION P 52 2 3 7 ANALOG BOARD SECTION P 80 2 3 9 OPERATION PANEL SECTION P 87 2 3 10 SENSOR SECTION P 88 2 3 13 CORDLESS SECTION P 92 37 KX FPC91 ...

Page 38: ...2 3 3 1 SIMPLE CHECK LIST CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 38 KX FPC91 ...

Page 39: ...2 3 8 POWER SUPPLY BOARD SECTION P 84 2 3 10 SENSOR SECTION P 88 2 5 TEST FUNCTIONS P 113 3 ADJUSTMENTS P 120 4 DISASSEMBLY INSTRUCTIONS P 128 6 4 5 STEPPING MOTOR DRIVE CIRCUIT P 162 Note When using thin paper etc sometimes the document will not feed Refer to 3 1 ADJUSTING THE FEEDER PRESSURE P 120 39 KX FPC91 ...

Page 40: ...2 3 4 2 DOCUMENT JAM CROSS REFERENCE 2 3 10 SENSOR SECTION P 88 4 DISASSEMBLY INSTRUCTIONS P 128 40 KX FPC91 ...

Page 41: ...efer to 3 1 ADJUSTING THE FEEDER PRESSURE P 120 Fig B CROSS REFERENCE 1 15 3 MAINTENANCE P 29 3 ADJUSTMENTS P 120 4 DISASSEMBLY INSTRUCTIONS P 128 Note When confirming if the characters are extended or distorted or if the feed problem is occurred use this test chart format Fig B 41 KX FPC91 ...

Page 42: ...he Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 1 15 2 MAINTENANCE CHECK ITEMS COMPONENT LOCATIONS P 27 2 3 4 ADF Auto Document Feed SECTION P 39 2 3 4 3 MULTIPLE FEED P 41 4 DISASSEMBLY INSTRUCTIONS P 128 42 KX FPC91 ...

Page 43: ... 41 and using it CROSS REFERENCE 1 14 3 INSTALLING THE RECORDING PAPER P 18 2 3 6 DIGITAL BOARD SECTION P 71 2 3 8 POWER SUPPLY BOARD SECTION P 84 2 3 10 SENSOR SECTION P 88 2 5 TEST FUNCTIONS P 113 4 DISASSEMBLY INSTRUCTIONS P 128 4 11 HOW TO REMOVE THE CASSETTE PLATE P 139 9 2 1 BACK COVER SECTION P 214 43 KX FPC91 ...

Page 44: ...2 3 4 6 PAPER JAM CROSS REFERENCE 2 3 10 SENSOR SECTION P 88 2 5 TEST FUNCTIONS P 113 4 DISASSEMBLY INSTRUCTIONS P 128 6 5 SENSORS AND SWITCHES P 172 44 KX FPC91 ...

Page 45: ...ATA IS SKEWED We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 2 3 4 4 SKEW P 42 2 3 4 9 THE RECEIVED FAX DATA IS SKEWED We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 2 3 4 7 MULTIPLE FEED AND SKEW P 45 45 KX FPC91 ...

Page 46: ...2 3 4 10 RECEIVED OR COPIED DATA IS EXPANDED We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 4 DISASSEMBLY INSTRUCTIONS P 128 46 KX FPC91 ...

Page 47: ...ecommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 2 3 4 12 A BLANK PAGE IS RECEIVED P 49 2 5 TEST FUNCTIONS P 113 4 DISASSEMBLY INSTRUCTIONS P 128 6 4 3 THERMAL HEAD P 159 47 KX FPC91 ...

Page 48: ...Fig C 48 KX FPC91 ...

Page 49: ... 2 3 7 ANALOG BOARD SECTION P 80 2 5 TEST FUNCTIONS P 113 2 3 4 13 BLACK OR WHITE VERTICAL LINE We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 1 15 3 2 CLEANING THE THERMAL HEAD P 29 4 DISASSEMBLY INSTRUCTIONS P 128 49 KX FPC91 ...

Page 50: ...T We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 2 3 4 11 A BLANK PAGE IS COPIED P 47 2 3 6 DIGITAL BOARD SECTION P 71 2 5 TEST FUNCTIONS P 113 4 DISASSEMBLY INSTRUCTIONS P 128 50 KX FPC91 ...

Page 51: ...AGE IS PRINTED We recommend making a copy of the Fig B document in 2 3 4 3 MULTIPLE FEED P 41 and using it CROSS REFERENCE 2 3 7 ANALOG BOARD SECTION P 80 2 5 TEST FUNCTIONS P 113 4 DISASSEMBLY INSTRUCTIONS P 128 51 KX FPC91 ...

Page 52: ...ut sometimes fails The unit can copy documents Troubleshooting Problem with the service line or with the transmitter s fax 4 The fax completely fails to transmit or receive The unit can copy documents Troubleshooting Problem with the electric circuit 5 The fax fails either to transmit or receive when making a long distance or an international call The unit can copy documents Detailed description o...

Page 53: ...2 3 5 1 DEFECTIVE FACSIMILE SECTION 2 3 5 1 1 TRANSMIT PROBLEM CROSS REFERENCE 1 15 3 MAINTENANCE P 29 2 3 4 ADF Auto Document Feed SECTION P 39 2 3 9 OPERATION PANEL SECTION P 87 53 KX FPC91 ...

Page 54: ...2 3 5 1 2 SOMETIME THERE IS A TRANSMIT PROBLEM Note 596 Transmit level set represents a service code Refer to 2 4 4 SERVICE FUNCTION TABLE P 101 54 KX FPC91 ...

Page 55: ...PAPER when the fax switches to the memory receiving mode and the memory capacity becomes full of the unprintable data In this case error messages MEMORY FULL and its main cause for example CHECK PAPER are displayed on the LCD Once you solve the main problem MEMORY FULL will be cancelled and the reception problem will be resolved LCD display messages indicating the error causes are shown below CHEC...

Page 56: ...o causes can be considered for this symptom Cause 1 The other party is executing automatic dialing the call has been received by this unit and the CED or DIS signal response time is too long In most cases this unit detects the CNG signal and can respond to CED or DIS According to the ITU T standard the communication procedure is cancelled when there is no response from the other party within 35 se...

Page 57: ...procedure at the time of transmission from FAX1 to FAX2 there is a delay until the echo canceler operates S1 is closed so that a part of the head of the training signal may drop out Normal reception by FAX2 may not be possible and transmission may not be started Countermeasure A When the international line mode is ON in the service mode code No 521 a dummy signal is attached to the head of the tra...

Page 58: ...Long distance and international communication operations SYMPTOM COUNTERMEASURE Does not receive in the automatic mode 1 If possible manual transmission should be done from the transmission side 2 If possible two pauses should be inserted at the end of the auto dial number on the transmission side 3 If possible the Function Selector Switch should be switched to FAX Does not transmit 1 Confirm the ...

Page 59: ...mitted 8 52 NO RESPONSE RCV Reception is finished when the T1 TIMER expires 9 54 ERROR NOT YOUR UNIT RCV DCN is received after DIS transmission 11 58 COMMUNICATION ERROR RCV DCN is received after FTT transmission 13 59 ERROR NOT YOUR UNIT SND DCN responds to the post message 14 65 COMMUNICATION ERROR SND DCN is received before DIS reception 2 65 COMMUNICATION ERROR RCV Reception is not EOP EOM PIP...

Page 60: ...60 KX FPC91 ...

Page 61: ...CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 61 KX FPC91 ...

Page 62: ...CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 62 KX FPC91 ...

Page 63: ...CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 63 KX FPC91 ...

Page 64: ...CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 64 KX FPC91 ...

Page 65: ...65 KX FPC91 ...

Page 66: ...66 KX FPC91 ...

Page 67: ...CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 67 KX FPC91 ...

Page 68: ...Based on this the parameters for the desired codes can be changed The procedure for changing and listing parameters is described on 2 3 5 2 1 ENTERING THE REMOTE PROGRAMMING MODE AND CHANGING SERVICE CODES P 68 Also before exiting the remote programming mode it is advisable to obtain a new list to confirm that the changes were made correctly Hint Since the connected telephone is in use during the ...

Page 69: ...ernational mode select 1 ON 2 OFF ON OK 522 Auto standby select 1 ON 2 OFF ON OK 523 Receive equalizer select 1 0 0km 2 1 8km 3 3 6km 4 7 2km 0 0km OK 524 Transmit equalizer select 1 0 0km 2 1 8km 3 3 6km 4 7 2km 0 0km OK 550 Memory clear NG 551 ROM check NG 552 DTMF signal tone test ON OFF OFF OK 553 Monitor on FAX communication 1 OFF 2 Phase B 3 ALL OFF OK 554 Modem test NG 555 Scanner test NG 5...

Page 70: ... Journal 3 NG 890 TEL FAX ring back tone 1 ON 2 OFF ON OK 958 Cordless test mode NG 991 Setup list 1 Start OK 994 Journal list 1 Start OK 995 Journal 2 list 1 Start OK 996 Journal 3 list 1 Start OK 998 History list 1 Start OK 999 Service list 1 Start OK OK means can set NG means can not set Note Refer to 2 4 4 SERVICE FUNCTION TABLE P 101 for descriptions of the individual codes Example If you wan...

Page 71: ...ied and any malfunctions are analyzed In past experiences digital IC especially SRAM DRAM and ROM malfunctions are extremely rare after installation in the product This may be repaired by replacing the IC DRAM etc However the real cause may not have been an IC malfunction but a soldering fault instead Soldering faults difficult to detect with the naked eye are common particularly for ASIC and RA R...

Page 72: ...p the system Those signal lines should remain normal Other signal lines are not directly related to that failure even if they have faults or troubles As long as these signals remain normal once the power is turned on each IC can repeatedly output 5V H and 0V L The following shows NG and normal wave patterns 72 KX FPC91 ...

Page 73: ...NG Wave pattern Refer to NG EXAMPLE 73 KX FPC91 ...

Page 74: ...elayed the circuit will not work Nor will it if the IC is defective and the output voltage level is not normal although the timing of these signals is accurate enough to meet the specifications Make sure that your oscilloscope is calibrated before starting a test Therefore it is imperative to confirm whether each IC outputs the signal at the correct level See the I O Pin No Diagram The signal leve...

Page 75: ...I O and Pin No Diagram 75 KX FPC91 ...

Page 76: ... SRAM and modem are checked If initialization fails for the ICs the system will not boot up In this case please find the cause as follows CROSS REFERENCE 2 3 6 2 NG EXAMPLE P 78 2 3 6 3 CHECK THE STATUS OF THE DIGITAL BOARD P 79 2 3 8 POWER SUPPLY BOARD SECTION P 84 76 KX FPC91 ...

Page 77: ...CROSS REFERENCE 2 3 6 3 CHECK THE STATUS OF THE DIGITAL BOARD P 79 Other NG example while the power is ON and the LCD displays the following 77 KX FPC91 ...

Page 78: ...2 3 6 2 NG EXAMPLE 78 KX FPC91 ...

Page 79: ...2 3 6 3 CHECK THE STATUS OF THE DIGITAL BOARD 79 KX FPC91 ...

Page 80: ...ophone and the signal is output to the telephone line The signal mainly flowing on this route is analog You can trace the signal with an oscilloscope The signal flow on each route is shown in the Check Sheet here If you find a specific problem in the unit for example if you cannot communicate with the H S trace that signal route locally with the following Check Sheet and locate the faulty point 2 ...

Page 81: ...81 KX FPC91 ...

Page 82: ...tween the handset microphone and telephone line sending or between the telephone line and the handset speaker receiving or between the microphone and the telephone line sending or between the telephone line and the speaker receiving Check the components at that point 2 3 7 1 CHECK SHEET P 80 is useful for this investigation 2 No pulse dialing 3 No ring tone or No bell CROSS REFERENCE 2 3 7 1 CHECK...

Page 83: ...ECTIVE TAM INTERFACE SECTION 1 The FAX turns on but does not arrive through TAM CROSS REFERENCE 6 10 2 CIRCUIT OPERATION P 189 2 A FAX is received but won t switch from TAM to FAX CROSS REFERENCE 2 3 7 ANALOG BOARD SECTION P 80 6 10 TAM INTERFACE SECTION P 188 83 KX FPC91 ...

Page 84: ... test withstanding voltage test intentional short circuit test etc Caution If you find a melted fuse in the unit do not turn on the power until you locate and repair the faulty parts except for the fuse otherwise the fuse will melt again and you cannot pinpoint the faulty point In most cases the symptom is that nothing is output It is more likely that the fault is in the primary side rather than t...

Page 85: ...2 3 8 2 TOROUBLESHOOTING FLOW CHART 85 KX FPC91 ...

Page 86: ...orst case of Q101 is a short circuit between the Drain and Gate because damage expands to the peripheral circuit of Q101 This is due to a very high voltage through the Gate circuit which is composed of R128 R109 D106 and IC101 You should change all of the parts listed as follows F101 Q101 R128 R109 D106 IC101 D201 If D201 is broken the oscillation circuit in the power supply cannot operate Check i...

Page 87: ...2 3 9 OPERATION PANEL SECTION 2 3 9 1 NO KEY OPERATION CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 2 3 9 2 NO LCD INDICATION CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 87 KX FPC91 ...

Page 88: ...or read position sensor recording paper sensor and jam sensor are turned ON OFF by the copy operation Therefore each sensor can be checked for proper mechanical operation As for the electric check check whether each voltage is right or not with following flowchart turning each sensor lever ON OFF manually 2 3 10 1 CHECK THE DOCUMENT TOP SW SW353 REMOVE DOCUMENT 2 3 10 2 CHECK THE DOCUMENT SET SW S...

Page 89: ...2 3 10 4 CHECK THE PAPER TOP SENSER PS501 PAPER JAMMED 2 3 11 CIS Contact Image Sensor SECTION Refer to 6 4 4 SCANNING BLOCK P 161 CROSS REFERENCE 2 5 TEST FUNCTIONS P 113 89 KX FPC91 ...

Page 90: ...90 KX FPC91 ...

Page 91: ...2 3 12 THERMAL HEAD SECTION Refer to 6 4 3 THERMAL HEAD P 159 91 KX FPC91 ...

Page 92: ...2 3 13 CORDLESS SECTION 2 3 13 1 BATTERY WON T CHARGE Base Unit 2 3 13 2 BATTERY WON T CHARGE Handset 92 KX FPC91 ...

Page 93: ...2 3 13 3 NO VOICE RECEPTION Note When checking the RF UNIT refer to 2 3 14 HOW TO CHECK THE RF UNIT P 97 93 KX FPC91 ...

Page 94: ...2 3 13 4 NO VOICE TRANSMISSION 94 KX FPC91 ...

Page 95: ...2 3 13 5 NO LINK Handset TX 2 3 13 6 NO LINK Handset RX 95 KX FPC91 ...

Page 96: ...2 3 13 7 NO LINK Base Unit RX 2 3 13 8 NO LINK Base Unit TX 96 KX FPC91 ...

Page 97: ...i to Transmit Test press TX TEST button 2 Check TX Frequency 926 100 MHz 3 0 kHz 3 When value if off adjust VRfreq 4 If can t adjust replace RF Unit 2 3 14 3 TRANSMIT POWER CHECK 1 Press dBm button on Marconi 2 Check Marconi TX Power reading It should equal 3 5 dBm 4 dBm 7 5 dBm 1 5 dBm 3 When value is over replace RF Unit 2 3 14 4 RECEIVING SENSITIVITY CHECK 1 Connect audio cable BNC side to AF I...

Page 98: ... and BNC end to scope 2 Set scope to the following condition TIME DIV 1 msec VOLT DIV 1 V 3 Set RF GEN LEVEL to 5 dBµV 11dBµVemf Check scope voltage is LOW 4 Set RF GEN LEVEL to 17 dBµV 11dBµVemf Check scope voltage is HIGH 5 When scope voltage is wrong replace RF Unit 98 KX FPC91 ...

Page 99: ...se listed in the Operating Instructions and are available to the user The special programs are only those listed here and not displayed to the user In both the User and Service Modes there are Set Functions and Test Functions The Set Functions are used to program various features and functions and the Test Functions are used to test the various functions The Set Functions are accessed by entering ...

Page 100: ...2 4 3 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out Note The above values are the default values 100 KX FPC91 ...

Page 101: ...signal with the unit s speaker during FAX communication or not 554 Modem test See 2 5 TEST FUNCTIONS P 113 555 Scan test See 2 5 TEST FUNCTIONS P 113 556 Motor test 0 See 2 5 TEST FUNCTIONS P 113 557 LED test See 2 5 TEST FUNCTIONS P 113 558 LCD test See 2 5 TEST FUNCTIONS P 113 559 Document jam detection select 1 ON 2 OFF 1 2 1 See 2 2 1 DOCUMENT JAMS P 33 561 KEY test See 2 5 TEST FUNCTIONS P 11...

Page 102: ...smission Refer to 2 3 5 1 2 SOMETIME THERE IS A TRANSMIT PROBLEM P 54 and 2 3 5 1 6 THE UNIT CAN COPY BUT THE TRANSMISSION AND RECEPTION IMAGE ARE INCORRECT P 58 718 Receive speed selection 1 9600BPS 2 7200BPS 3 4800BPS 4 2400BPS 1 4 1 Adjusts the speed to start training during FAX reception Refer to 2 3 5 1 3 RECEIVE PROBLEM P 55 and 2 3 5 1 6 THE UNIT CAN COPY BUT THE TRANSMISSION AND RECEPTION ...

Page 103: ...2 4 5 SERVICE MODE SETTINGS Example of a printed out list Note The above values are the default values 103 KX FPC91 ...

Page 104: ...2 4 6 HISTORY Note See the following descriptions of this report Item No 1 49 are corresponding to the listed items in 2 4 6 1 DESCRIPTIONS OF THE HISTORY REPORT P 105 104 KX FPC91 ...

Page 105: ... TIME The shows the very first month date year and time set by the user after they purchased the unit 11 USAGE TIME The amount of time the unit has been powered ON 12 FACTORY NOW This shows how many days from factory production until the user prints out this history list 13 TEL MODE The amount of time the TEL mode setting was used 14 FAX MODE The amount of time the FAX mode setting was used 15 TEL...

Page 106: ...s received correctly COMPLETE will be printed For models without a PC interface or when there is a PC interface but the signal cannot be received between the fax and PC INCOMPLETE will be printed The number of pages transmitted If the unit does not have a PC interface NONE will be printed 34 Not Used 35 Not Used 36 FAX MODE Means the unit received a fax message in the FAX mode 37 MAN RCV Means the...

Page 107: ... 49 ENGINE VERSION Engine Control CPU Version 107 KX FPC91 ...

Page 108: ...eport only gives you basic information about a communication but the other two journal reports provide different information on the same item communication 1 Look at NO 01 in the JOURNAL If you want to know about the details about that item see NO 01 in the JOURNAL 2 and the JOURNAL 3 You can get the following information MODE Fax transmission RCV MODE TEL TX SPEED 9 6 kbps RESOLUTION standard ENC...

Page 109: ...age by friendly signal detection 4 VOX Means the unit detected silence or no voice 5 RMT DTMF Means the unit detected DTMF Remote Fax activation code entered remotely 6 PAL DTMF Means the unit detected DTMF Remote Fax activation code entered by a parallel connected telephone 7 TURN ON Means the unit started to receive after 15 rings Remote Turn On Service Code 573 8 TIME OUT Means the unit started...

Page 110: ...um Scan Line Time Used only at the factory 8 EQM EQM means Eye Quality Monitor Used only at the factory 9 ERROR LINE RX When an error occurs while receiving a fax this shows the number of error lines 10 MAKER CODE This shows a 2 digit code of the other party s fax machine brand 0E KX model 00 Unknown 79 UF model 19 Xerox model 110 KX FPC91 ...

Page 111: ...2 4 7 3 PRINTOUT EXAMPLE 111 KX FPC91 ...

Page 112: ...112 KX FPC91 ...

Page 113: ... the unit s functions When complaints are received from customers they provide an effective tool for identifying the locations and causes of malfunctions CROSS REFERENCE 2 5 1 DTMF SINGLE TONE TRANSMIT SELECTION P 114 2 5 2 BUTTON CODE TABLE P 115 2 5 3 PRINT TEST PATTERN P 116 113 KX FPC91 ...

Page 114: ...for the various test modes CROSS REFERENCE 3 2 CORDLESS P 121 6 5 SENSORS AND SWITCHES P 172 2 5 1 DTMF SINGLE TONE TRANSMIT SELECTION Note After performing this check do not forget to turn the setting off otherwise dialing in DTMF signal will not work 114 KX FPC91 ...

Page 115: ...2 5 2 BUTTON CODE TABLE Note These codes 00 01 are only for the data in the History Report 115 KX FPC91 ...

Page 116: ...2 5 3 PRINT TEST PATTERN 1 Platen roller Reference pattern 116 KX FPC91 ...

Page 117: ...2 Left margin Top margin Reference pattern 117 KX FPC91 ...

Page 118: ...3 Thermal head 1 dot Reference pattern 118 KX FPC91 ...

Page 119: ...4 Use this test pattern to confirm the torque limiter for Ink film and platen roller timing Reference pattern 119 KX FPC91 ...

Page 120: ... feeder pressure by following the steps below 1 Open the front cover by pulling up the center part 2 Shift the position of the green lever by using an instrument with a pointed end such as a paper clip Left When documents multiple feed Center Standard position pre selected Right When documents do not feed 3 Close the front cover securely 120 KX FPC91 ...

Page 121: ...NDSET linking with the BASE UNIT 3 2 2 EQUIPMENT 1 Radio Tester Marconi Model 2295A or later 2 4 5 digit Digital Multimeter B K Model 2833 or compatible 3 Oscilloscope single or dual channel Panasonic VP 5512P100 or compatible 4 Telephone Analyzer B K Model 1050 or compatible 5 DC Power Supply capable of supply 3 9V DC at 100mA NOTE only needed if Telephone Analyzer does not have DC VOLTS output a...

Page 122: ...s on the machine s LCD display 2 Press the KEY four times 4 Talk Mode now appears on the machine s LCD display 3 Press the SET KEY Channel 01 now appears on the machine s LCD display Any channel can now be keyed in using the 10 numeric keys on the machine 4 Press the SET KEY twice The talk mode is now established for the channel displayed in step 3 5 Establish the standard settings of the Marconi ...

Page 123: ...3 2 3 4 ADJUSTMENT PROCEDURE Once aligned please reassemble the base unit Also take off the back of the PORTABLE HANDSET and unsolder the MIC lead short wire if you previously installed it 123 KX FPC91 ...

Page 124: ...Osilloscope SQ RF COAXIAL CABLE ANALOG BOARD 124 KX FPC91 ...

Page 125: ...to the P C Board as possible since you will lay the keypad membrane over part of this lead 13 Solder a small short insulated wire to MIC test point 14 Lay the keypad membrane over the keypad switch contacts 3 2 4 2 SYMPTOM REMEDY TABLE If you have one of the listed symptoms please refer to this table and make the appropriate adjustments 3 2 4 3 HANDSET ADJUSTMENT PREPARATION Please perform the fol...

Page 126: ... Board 4 Solder speaker wires back onto the P C Board observing correct polarity 5 If you will align Item C RX Input in BASE UNIT then solder a short wire across the MIC leads Remember to unsolder this wire after you completed the BASE UNIT alignment 6 Insert antenna into the case 7 Install antenna and top P C Board mounting screws 8 Install case back and bottom mounting screws 9 DO NOT INSTALL TH...

Page 127: ...NG VR203 VR201 VR202 TP SP Item A Audio cable Positive lead Isolation Capacitor TP VSS TP VDD TP MIC Item C Audio cable Positive lead Isolation Capacitor TP VSS TP VDD SQL RF UNIT TP GND TP ANT High frequency cable VRfrq 127 KX FPC91 ...

Page 128: ...4 DISASSEMBLY INSTRUCTIONS 4 1 HOW TO REMOVE THE BOTTOM FRAME 128 KX FPC91 ...

Page 129: ...4 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 129 KX FPC91 ...

Page 130: ...4 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 130 KX FPC91 ...

Page 131: ...4 4 HOW TO REMOVE THE ANALOG DIGITAL AND POWER BOARDS AC INLET AND ANTENNA 131 KX FPC91 ...

Page 132: ...4 5 HOW TO REMOVE THE MOTOR BLOCK 132 KX FPC91 ...

Page 133: ...133 KX FPC91 ...

Page 134: ...4 6 HOW TO REMOVE THE SEPARATION ROLLER 134 KX FPC91 ...

Page 135: ...4 7 HOW TO REMOVE THE IMAGE SENSOR CIS 135 KX FPC91 ...

Page 136: ...4 8 HOW TO REMOVE THE TERMAL HEAD 136 KX FPC91 ...

Page 137: ...4 9 HOW TO REMOVE THE PLATEN ROLLER BACK COVER 137 KX FPC91 ...

Page 138: ...4 10 HOW TO REMOVE THE PICKUP ROLLER 138 KX FPC91 ...

Page 139: ...4 11 HOW TO REMOVE THE CASSETTE PLATE 139 KX FPC91 ...

Page 140: ...4 12 HOW TO REMOVE THE DOCUMENT TRAY 140 KX FPC91 ...

Page 141: ...4 13 INSTALLATION POSITION OF THE LEAD WIRES 141 KX FPC91 ...

Page 142: ...the foil by overheating Flux HI115 Specific gravity 0 863 Original flux should be replaced daily 5 2 FLAT PACKAGE IC REMOVAL PROCEDURE 1 Put plenty of solder on the IC pins so that the pins can be completely covered Note If the IC pins are not soldered enough you may give pressure to the P C board when cutting the pins with a cutter 2 Make a few cuts into the joint between the IC and its pins firs...

Page 143: ...ng with the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 Solder the pins sliding the soldering iron in the direction of the arrow 5 4 BRIDGE MODIFICATION PROCEDURE 1 Lightly resolder the bridged portion 2 Remove the remaining solder along the pins using a soldering iron as shown in the figure below 143 KX FPC91 ...

Page 144: ...6 CIRCUIT OPERATIONS 6 1 CONNECTION DIAGRAM 144 KX FPC91 ...

Page 145: ...ed mainly for the parameter working in the storage area 4 Dynamic RAM IC503 This memory is used mainly for the parameter working in the storage area 5 MODEM IC505 Performs the modulation and the demodulation for FAX communication 6 Read Section CIS image sensor to read transmitted documents 7 Motor Driver IC508 Drives the transmission motor and the reception motor 8 Thermal Head Contains heat emit...

Page 146: ...6 2 1 GENERAL BLOCK DIAGRAM CROSS REFERENCE 6 7 1 ANALOG UNIT BLOCK DIAGRAM P 184 146 KX FPC91 ...

Page 147: ...ANALOG ASIC CN501 CN507 CN509 BATT GND IC502 ROM IC503 DRAM ADR 14 0 D 7 0 XWR XRD IC504 SRAM ADR 4 0 D 7 0 XWR XCS 32 256MHz XRD TX RX IC505 MODEM MICLK MILAT 5V BATT MIDATA 3V BATT XWDERR WRESETI CN505 IC506 IC508 PS501 SW501 32 768KHz TO 24V 5V PG DG THDAT THCLK THLAT STB1 STB2 KSTART KLATC KSCLK KTXD KRXD JOG1 JOG2 TM 24V 24V POWER SUPPLY CN503 TO SI CLK SIG CIS LED ON CIS TO THERMAL HEAD CN50...

Page 148: ...6 3 2 MEMORY MAP 148 KX FPC91 ...

Page 149: ...M This memory is programmed into the ASIC and uses 8 KB for the image processing See Fig A 7 THERMAL HEAD I F Transmits the recorded data to the thermal head 8 MOTOR I F Controls the transmission motor which feeds the document Controls the receiving motor which feeds the recording paper 9 OPERATION PANEL I F Serial interface with Operation Panel 10 I O PORT I O Port Interface 11 ANALOG UNIT Electr...

Page 150: ...9FFFH are for the bank areas 6 3 5 STATIC RAM IC504 This 32KB RAM carries a common area of 8KB and bank areas which each have 12KB The addresses from 0000H to EFFFH are for the common area and from A000H to CFFFH are for the bank area 6 3 6 DYNAMIC RAM IC503 The DRAM serves as CPU and receives memory The address is F200H F3FFH DRAM access window 1 and F600H F7FFH DRAM access window 2 150 KX FPC91 ...

Page 151: ...OWER SOURCE GND 27 RVN I 5V INPUT PORT FILM END SENSOR SIGNAL 28 IRDATXD IOP O 5V CRESET 29 IRDARXD IOP80 I 5V INPUT PORT MDL SEL 30 TXD IOP O 5V OUTPUT PORT RESERVED 31 RXD IOP O 5V OUTPUT PORT RESERVED 32 XRTS IOP O 5V OUTPUT PORT RESERVED 33 XCTS IOP O 5V OUTPUT PORT RESERVED 34 XDSR IOP O 5V OUTPUT PORT RESERVED 35 DCD IOP O 5V OUTPUT PORT RESERVED 36 XDTR IOP O 5V OUTPUT PORT RESERVED 37 RI C...

Page 152: ...ATA BUS 2 96 DB4 I O 5V CPU DATA BUS 4 97 DB1 I O 5V CPU DATA BUS 1 98 DB5 I O 5V CPU DATA BUS 5 99 DB0 I O 5V CPU DATA BUS 0 100 DB6 I O 5V CPU DATA BUS 6 101 DB7 I O 5V CPU DATA BUS 7 102 VSS GND POWER SOURCE GND 103 VDD 5V 5V POWER SOURCE 5V 104 XROMCS I O 5V ROM IC502 CHIP SELECT 105 RD O 5V CPU RD 106 WR O 5V CPU WR 107 ADR0 O 5V CPU ADDRESS BUS 0 108 ADR1 O 5V CPU ADDRESS BUS 1 109 ADR2 O 5V...

Page 153: ... IOP I 5V INPUT PORT P TOP 153 RM1 IOP I 5V INPUT PORT DCN 154 RM2 IOP I 5V INPUT PORT CPC 155 RM3 IOP O 5V OUTPUT PORT VOLIN SEL1 156 RXE IOP I 5V INPUT PORT NOT USED 157 TMO O 5V MOTOR A PHASE 158 VDD 5V 5V POWER SOURCE 5V 159 VSS GND POWER SOURCE GND 160 TM1 IOP O 5V MOTOR B PHASE 161 TM2 IOP O 5V MOTOR A PHASE 162 TM3 IOP O 5V MOTOR B PHASE 163 TXE IOP O 5V MOTOR ENABLE SIGNAL 164 KSTART O 5V ...

Page 154: ...stem is reset completely 2 When pin 132 and 133 of IC501 become low level they will prohibit the SRAM IC504 from changing data The SRAM IC504 will go into the backup mode when they are backed up by a lithium battery 3 The watch dog timer built in the ASIC IC501 is initialized by the CPU about every 1 5 ms When a watch dog error occurs pin 137 of the ASIC IC501 becomes low level The terminal of the...

Page 155: ... the power switch is OFF and the voltage of 5V decreases the voltage detect IC IC507 outputs Low level and the IC501 outputs the reset signal Pin 28 of the SRAM becomes roughly the same voltage as the battery voltage At this point pin 20 CS of IC504 becomes high level causing the SRAM to go into the backup mode in which the power consumption is lower 3 RTC Inside IC501 Backup Circuit Operation Whe...

Page 156: ...ording to the voltage output time the thermal head s temperature is detected After the thermal head temperature is converted to voltage in B it is then changed to digital data in the A D converter inside IC501 The CPU decides the strobe width of the thermal head according to this value Therefore this circuit can keep the thermal head at an even temperature in order to stabilize the printing densit...

Page 157: ...5 they are stored in RAM 4 The white black data stored as above via routes6 and 8 is input to the P S converter The white black data converted to serial data in the P S converter is input to the Thermal Head via route9 and is printed out on recording paper Note Standard Reads 3 58 times mm Fine Reads 7 7 times mm Super Fine Reads 15 4 times mm Transmission 1 Same processing as Copy items 1 3 2 The...

Page 158: ...6 4 2 BLOCK DIAGRAM 158 KX FPC91 ...

Page 159: ... registers of the 9 ICs are connected in series and upon the shift of the 1728 dot increment the shift register becomes filled with data and a latch pulse is emitted to each IC from IC501 pin 151 THLAT With this latch pulse all the contents of the shift registers are latched to the latch registers Thereafter through the addition of strobes from the IC501 pins 142 143 only the dot location of black...

Page 160: ...160 KX FPC91 ...

Page 161: ...stor Q512 turns on This applies voltage to the LED array to light it The contact image sensor is driven by each of the FTG F1 signals output from IC501 and the original image illuminated by the LED array undergoes photoelectric conversion to output an analog image signal SIG The analog image signal is input to the system ASIC on AIN1 pin 1 of IC501 and converted into 8 bit data by the A D converte...

Page 162: ...IC501 pins 157 160 162 causing driver IC508 pins 13 16 to drive the Motor Coil The motor coil is energized sequentially in 2 phase increments which causes a 1 step rotation A 1 step rotation feeds 0 13 mm of recording paper or document paper The timing chart is below Stepping Motor Drive Mode Function Mode Phase Pattern Speed Copy Standard or Fine 1 2 432 pps t 1 432 Super Fine 1 2 216 pps t 1 216...

Page 163: ...C IC501 becomes a low level and Q503 turns OFF Then Q501 also turns OFF and instead of 24 V 5 V is supplied through D501 so that the motor is held in place When the system is in the stand by mode all of the motor drive transistors turn OFF Consequently the motor current stops 163 KX FPC91 ...

Page 164: ...hed rotates counterclockwise CCW Swing Gear C engages CAM Gear to rotate counterclockwise CCW This operation provide four mode options A Transmit mode B Paper Pickup mode C Receive mode and D Copy mode selected by the Sensor Switch The Sensor Switch Lever s position in the CAM Gear controlled by the software selects a specific mode You can see which mode is selected by confirming the Mode Marker s...

Page 165: ...olling positions of Swing Gears A B and C determine which gears convey their drive power in each mode A Transmit mode See Fig A Swing Gear A engages Gear E and conveys its power to the Separation Roller Gear through Gear G and sets the Separation Roller for feeding documents Fig A Transmit mode 165 KX FPC91 ...

Page 166: ...up Idler Gear The Gear drive as follows Swing Arm C engaging Gear H Platen Idler Gear Pick up Idler Gear Pickup roller Gear The Pickup Roller picks up and pre feeds a recording paper until the recording paper pushes up the Paper Top sensor lever Fig B Paper Pickup mode Note See Sensor Location in 6 5 SENSORS AND SWITCHES P 172 166 KX FPC91 ...

Page 167: ...up mode Swing Gear B engages Gear C and conveys its power to the Platen Roller Gear and Ink Ribbon Drive Gear through Platen Drive Gear Then the Platen Roller feeds recording paper for printing the received data Fig C Receive mode 167 KX FPC91 ...

Page 168: ... mode go Next Swing Gear A and B engages Gear E and Gear C respectively and conveys these power to the Separation Roller Gear and the Platen Roller Gear Then the Separation Roller feeds documents and the Platen Roller feeds recording paper for printing copier data Fig D Copy mode 168 KX FPC91 ...

Page 169: ...6 4 6 3 MECHANICAL MOVEMENTS IN THE MAIN OPERATIONS transmitting documents receiving faxes and copying 6 4 6 3 1 IDLE STATUS Note See Sensor Locations in 6 5 SENSORS AND SWITCHES P 172 169 KX FPC91 ...

Page 170: ...6 4 6 3 2 TRANSMITTING DOCUMENTS CROSS REFERENCE 2 3 10 SENSOR SECTION P 88 6 4 6 3 3 RECEIVING FAX Note See Sensor Locations in 6 5 SENSORS AND SWITCHES P 172 170 KX FPC91 ...

Page 171: ...6 4 6 3 4 COPYING Note See Sensor Locations in 6 5 SENSORS AND SWITCHES P 172 CROSS REFERENCE 2 3 10 SENSOR SECTION P 88 171 KX FPC91 ...

Page 172: ...CHES Sensor Circuit Location Sensor Sensor or Switch Name Message Error Operation Panel SW352 Document set SW CHECK DOCUMENT SW353 Document top SW REMOVE DOCUMENT Digital PCB SW501 Film End Cover open CHECK COVER or CHECK FILM PS501 Paper Top PAPER JAMMED Analog P C B SW102 Motor Position Sensor Locations 172 KX FPC91 ...

Page 173: ...el Operation Board Photo transistor Signal IC301 16 pin Out of the Read Position OFF High level At the Read Position ON Low level 2 Document Set SW352 When a document is set the SW becomes ON and the input signal of IC301 15 pin Operation becomes a low level When there is no document the SW becomes ON and the input signal of IC301 15 pin Operation becomes a high level Operation Board Photo transis...

Page 174: ...in Cover open or no film OFF High level Cover closed and set a film ON Low level 4 Paper top Sensor PS501 When the recording paper is loaded on the print head the shelter plate shuts the sensor light and the photo transistor becomes OFF The input signal of IC501 131 pin becomes a high level Usually the shelter plate is lifted the photo transistor becomes ON and the input signal of IC501 131 pin be...

Page 175: ...5 Motor Position Sensor SW102 This sensor is a detection switch for recording the position of the CAM Signal IC501 81 pin Home position Low level Other High level 175 KX FPC91 ...

Page 176: ...e four permanent organizations of the International Telecommunications Union ITU investigates and make recommendations on international standards for facsimiles 2 Definition of Each Group Group I G1 Official A 4 size documents without using formats which reduce the band width of a signal are sent over telephone lines Determined in 1968 Transmission for about 6 minutes at a scanning line density of...

Page 177: ...me consists of the following Control time This is time at the start of transmission when the functions at the sending and receiving sides are confirmed the transmission mode is established and transmission and reception are synchronized Image transmission time This is the time required for the transmission of document contents image data In general this time is recorded in the catalog etc Hold tim...

Page 178: ...n signals and the data signals added to them Data signals are added to DIS and DCS signals Signal DIS Digital Identification Signal Identification Signal Format 00000001 Function Notifies the capacity of the receiving unit The added data signals are as follows Signal DCS Digital Command Signal Identification Signal Format X1000001 Example Some models do not support the following items Bit No DIS D...

Page 179: ...gth capability A4 297 mm Unlimited A4 297 mm and B4 364 mm Invalid Maximum recording length A4 297 mm Unlimited B4 364 mm Invalid 21 22 23 0 0 0 0 0 1 0 1 0 1 0 0 0 1 1 1 1 0 1 0 1 1 1 1 Minimum scan line time capability of the receiver 20 ms at 3 85 l mm T7 7 T3 85 40 ms at 3 85 l mm T7 7 T3 85 10 ms at 3 85 l mm T7 7 T3 85 5 ms at 3 85 l mm T7 7 T3 85 10 ms at 3 85 l mm T7 7 1 2 T3 85 20 ms at 3...

Page 180: ...ng to this signal TCF Training Check Sends 0 continuously for 1 5 seconds at the same speed as the training signal CFR Confirmation to Receive X0100001 Notifies the sending side that TCF has been properly received If TCF is not properly received FTT Failure To Train X0100010 is relayed to the sender The sender then reduces the transmission speed by one stage and initiates training once again Train...

Page 181: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 181 KX FPC91 ...

Page 182: ...r to 2 3 7 1 CHECK SHEET P 80 2 Facsimile Reception The analog image data which is received from the telephone line passes through the NCU section and enters pin 45 of the modem IC505 The signals that enter pin 45 of the modem IC505 are demodulated in the board to digital image signals then placed on the data bus In this case the image signals from the telephone line are transmitted serially Hence...

Page 183: ... Simple explanations for the various sections are given below 2 Circuit Operation NCU Section This is the interface between the telephone line and external telephone This is composed of a bell detection circuit pulse dial generation circuit EXT TAM OFF HOOK detect circuit vox circuit amplifier circuit for line transmission and reception sidetone circuit etc Modem IC505 This is used for FAX signal ...

Page 184: ...6 7 1 ANALOG UNIT BLOCK DIAGRAM 184 KX FPC91 ...

Page 185: ...evel CN501 3 High Level CN101 3 High Level Q103 ON RL101 make 6 8 3 BELL DETECTION CIRCUIT 1 Circuit Operation The signal waveform for each point is indicated below The signal low level section input to pin 148 of ASIC IC501 on the digital board is read by ASIC and judged as a bell TEL LINE PC102 1 2 4 CN101 2 CN501 2 IC501 148 6 8 4 TAM INTERFACE CIRCUIT This circuit is to switch between FAX rece...

Page 186: ... R124 and enters IC101 pin 6 where the signal is amplified to about 16 5dB Then it is output from pin 1 of IC101 and transmitted to T101 via C117 and R110 If the side tone circuit is not applied the transmission signal will return to the reception amplifier via C111 R111 When the side tone circuit is active the signal output from IC101 pin 1 passes through C117 R113 R114 C112 and R112 and goes int...

Page 187: ...s voice from the line 2 Signal path Refer to 2 3 7 1 CHECK SHEET P 80 6 9 3 HANDSET CIRCUIT 1 Function This circuit controls the conversation over the handset i e the transmitted and received voices to and from the handset 2 Signal path Transmission signal Refer to 2 3 7 1 CHECK SHEET P 80 3 Signal path Reception signal Refer to 2 3 7 1 CHECK SHEET P 80 6 9 4 MONITOR CIRCUIT 1 Function This circui...

Page 188: ...isconnect the external TAM automatically 2 After sending the OGM the answering machine starts to record the message of the other party ICM recording After the OGM of the external TAM is finished the unit starts to detect approximately 5 seconds of no sound detection B If no sound is detected the unit will switch to FAX receiving and disconnect the external TAM automatically If the unit cannot dete...

Page 189: ...01 detects this voltage During detection PC101 4 becomes low DC LOOP Tip L101 LF101 R144 L105 b1 EXT TAM a1 L104 RL101 5 3 PC101 1 2 LF101 L102 POS101 Ring 2 CNG VOX signal detection circuit The CNG signal from the other party s FAX is detected in MODEM IC505 digital board Signal path Refer to 2 3 7 1 CHECK SHEET P 80 3 Remote receiving This is the parallel connected DTMF signal for the TEL or EXT...

Page 190: ...The unit consists of a LCD Liquid crystal display KEYs and LEDs light emitting diodes They are controlled by the Gate Array IC301 and ASIC IC501 on the DIGITAL BOARD Fig a The key matrix table is shown below Key Matrix 190 KX FPC91 ...

Page 191: ...the data bus D4 D7 V0 is supplied for the crystal drive R303 R377 and R305 R379 are density control resistors Consequently in this unit the timing positive clock is generated by the LCD interface circuitry in the gate array IC301 Density Normal Dark LED1 IC301 22pin H L 191 KX FPC91 ...

Page 192: ... The filter circuit decreases the noise voltage and the noise electric field strength Rectifier Circuit The input current is rectified by D101 D102 D103 and D104 and charges C106 to make DC voltage Then it supplies power to the converter circuit Kick on voltage circuit Bias is applied to the Q101 gate via this circuit when the AC power is turned on and Q101 begins operating 192 KX FPC91 ...

Page 193: ...ws L D1 Load L Then the power is supplied to the Load When Q1 is ON power is not output from the secondary side The output voltage is fed back in the control IC according to the error amp rectifier Then depending on how TON is controlled stabilization occurs Also when the current load becomes too large in order to decrease the voltage output the increase in is controlled and the output voltage is ...

Page 194: ...tage of the 24V circuit increases the current of the photo coupler PC101 increases the pulse width of the output control IC becomes narrower and the ON period of Q101 becomes shorter Over Current Limiter O C L The highest drain current Q101 is limited by a limiter circuit IC101 of 24V The 24V output is limited by this circuit Over Voltage Circuit If the 24V output increases because the error detec...

Page 195: ...AF signal output from the AF terminal of the RF unit is adjusted to the appropriate level by VR102 then it is input to IC103 The RX DATA signal from the Handset is muted at this point by IC103 to prevent the RX DATA from leaking onto the line In this way the noise is suppressed IC103 comprises a LPF a Pre Amp and an expander The signal compressed by the Handset is expanded in IC103 to recreate a o...

Page 196: ...se unit is input to the modulator circuit 6 14 4 RX DATA CIRCUIT The demodulated data waveform is then input to RX DATA pin 6 of the CPU IC104 If there is data from the Handset during talk operation the Handset data is as shown below to prevent the data from leaking onto the line 6 14 5 ID CODE SETTING When the Handset is placed on the base unit new ID data is output from pin 44 of the CPU after t...

Page 197: ...oice frequency band the signal frequency supplied from RXVCO will become very close to the receiving signal frequency the RF receiving signal frequency 902 100MHz 2nd IF receiving frequency 450KHz 901 6500MHz To prevent obstacles in the receiving signal for a weak wave condition the frequency will drop in 2 steps This method is called the Double Super Heterodyne Method and is a technique often use...

Page 198: ...198 KX FPC91 ...

Page 199: ...6 15 2 CONTROL BLOCK 199 KX FPC91 ...

Page 200: ...handset has the input for this detection called CS Carrier sensitivity SQ Squelch or 20dB 20dBuV m electric field detection There are various kinds of signal terminal names but their function is almost the same When the carrier detection does not work properly the base unit and the handset can not communicate and link mutually For example if the problem of cutting off occurs in one minute the caus...

Page 201: ...the handset is on the base unit being charges the security code from the base unit is automatically and randomly sent to the handset via the control terminal in the charge terminals Furthermore if another handset is placedon the charger of the base unit a security code is written from the base unit and the handset will be available for use The security code written from the base unit is randomly s...

Page 202: ... is set to high Q201 turns on and results in a louder beep tone 6 15 8 RECEPTION SIGNAL CIRCUIT The receiver circuit comprises expander IC201 After being adjusted to the appropriate level by VR202 the signal passes through a 3 kHz LPF and an expander built into IC202 If a large input is input to the microphone the gain control built into lowers the gain to reduce the output of the speaker amplifie...

Page 203: ...tinues to drop and reaches 3 2 V 3 2 V voltage detector inside IC201 operates and outputs a power down signal to the CPU This causes power to be cut off automatically and prevents the battery from over discharging Q203 is a charge detector that informs the CPU whether or not the handset is currently being charged During charging ID data is sent from the base unit Q204 receives this ID data and sen...

Page 204: ...6 15 11 CPU DATA IC901 204 KX FPC91 ...

Page 205: ...6 15 12 EXPLANATION OF CPU DATA COMMUNICATION 6 15 12 1 CALLING 6 15 12 2 TO TERMINATE COMMUNICATION 205 KX FPC91 ...

Page 206: ...nal from circuit Base Unit sends a ring signal DATA Ring then the Handset starts ringing 6 15 12 4 PORTS FOR TRANSMITTING AND RECEIVING OF DATA Handset transmitting 44 Pin receiving 25 Pin Base Unit transmitting 10 Pin receiving 7 Pin 206 KX FPC91 ...

Page 207: ...nsmitted from the Handset to the Base Unit is combination of DATA 0 DATA 1 DATA Delimit Pre data and End data The DATA which is transmitted from the Base Unit to the Handset is combination of DATA 0 DATA 1 DATA Delimt Pre data and End data 6 15 12 5 1 HANDSET 6 15 12 5 2 BASE UNIT Transmitting DATA Format 207 KX FPC91 ...

Page 208: ...ial DATA is transmitted from the Handset to the Base Unit in above format The combination of DATA 0 and DATA 1 are changed by each Dial No And the DATA Delimit is between each Frame as a stop The number of Frame is 2 6 15 12 8 TONE DIAL When executing Tone Dial Tone Dial DATA is transmitted from the Handset to the Base Unit in above format The DATA is changed by Dial No as same as Pulse Dial When ...

Page 209: ...6 15 12 9 FREQUENCY TABLE MHz 209 KX FPC91 ...

Page 210: ...7 TERMINAL GUIDE OF THE IC S TRANSISTORS AND DIODES 210 KX FPC91 ...

Page 211: ...8 FIXTURES AND TOOLS 211 KX FPC91 ...

Page 212: ...9 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 9 1 OPERATION PANEL SECTION 212 KX FPC91 ...

Page 213: ...9 2 UPPER CABINET SECTION 213 KX FPC91 ...

Page 214: ...9 2 1 BACK COVER SECTION 9 2 1 1 BACK COVER 1 214 KX FPC91 ...

Page 215: ...9 2 1 2 BACK COVER 2 215 KX FPC91 ...

Page 216: ...9 3 LOWER P C B SECTION CROSS REFERENCE 9 1 OPERATION PANEL SECTION P 212 216 KX FPC91 ...

Page 217: ...9 4 MOTOR SECTION 217 KX FPC91 ...

Page 218: ...9 5 HANDSET SECTION 218 KX FPC91 ...

Page 219: ...9 6 ACTUAL SIZE OF SCREWS 219 KX FPC91 ...

Page 220: ...10 ACCESSORIES AND PACKING MATERIALS 220 KX FPC91 ...

Page 221: ...11Q70Z CONNECTOR 11P Ref No Part No Part Name Description Remarks 12 PFBX1096X1 BUTTON STOP VOLUME 13 PFBX1097V1 BUTTON FUNCTION 14 PFBX1095X1 BUTTON DIALER 15 PFBC1057Y1 BUTTON START 16 PFBC1058Y1 BUTTON MONITOR 17 Not Used 11 1 2 UPPER CABINET SECTION 30 PFHX1350Z SPACER THERMAL HEAD 31 PFJS11Q69Z CONNECTOR 11P 32 PFHR1189Z GUIDE THERMAL HEAD LEFT 33 PFJHS019Z PRINTER UNIT THERMAL HEAD 34 PFHR11...

Page 222: ...J 136 PFUS1231Y SPRING GEAR I 137 PFDG1159Z GEAR I 138 PFDG1149Z GEAR A 139 PFDG1152Z GEAR CAM 140 PFDG1158Z GEAR H 141 PFDG1151Z GEAR C 142 PFDG1153Z GEAR D1 143 PFDG1157Z GEAR G Ref No Part No Part Name Description Remarks 144 PFDG1156Z GEAR F 145 PFHR1183Z ARM I 146 PFJQ35S1S15D DC MOTOR S 147 PFDG1154Z GEAR D2 148 PFDG1150Z GEAR B 149 PFMD1047Z FRAME GEAR BASE COVER 150 PFHR1185Z ARM V 11 1 7 ...

Page 223: ...RTS RA504 EXB38V101JV COMPONENTS PARTS RA505 EXB38V101JV COMPONENTS PARTS RA506 EXB38V101JV COMPONENTS PARTS Ref No Part No Part Name Description Remarks CRYSTAL OSCILLATORS X501 PFVCCFS32Z CRYSTAL OSCILLATOR X502 PFVC2457IZAT CRYSTAL OSCILLATOR X503 PFVC32256ZAT CRYSTAL OSCILLATOR PHOTO ELECTRIC TRANSDUCER PS501 PFVISG257 PHOTO ELECTRIC TRANSDUCER FUSE F502 PFRB002122KZ FUSE RESISTORS F501 ERJ6GE...

Page 224: ...EY0R00 0 Ref No Part No Part Name Description Remarks CAPACITORS C501 ECUV1H120JCV 12P C502 PQCUV1H473MD 0 047 S C504 PQCUV1H104ZF 0 1 C508 ECUV1H104ZFV 0 1 S C509 ECEA1CK101 100 S C510 ECUV1H561JCV 560P C515 ECUV1H102KBV 0 001 C517 ECUV1H104ZFV 0 1 S C518 ECUV1H104ZFV 0 1 S C519 ECUV1H104ZFV 0 1 S C520 ECUV1H104ZFV 0 1 S C522 ECUV1H104ZFV 0 1 S C523 ECUV1H104ZFV 0 1 S C525 ECUV1H104ZFV 0 1 S C527...

Page 225: ...C IC102 PQVIMC34119M IC S IC103 AN6137SB IC IC104 PFVI0008GF39 IC TRANSISTORS Q102 2SC2235 TRANSISTOR SI Q103 PQVTDTC143E TRANSISTOR SI Q200 PQVTDTC143E TRANSISTOR SI Q230 2SD1991A TRANSISTOR SI Q231 2SD2137 TRANSISTOR SI Q232 2SD601R TRANSISTOR SI Q250 2SB709A TRANSISTOR SI Q251 2SD601R TRANSISTOR SI Ref No Part No Part Name Description Remarks DIODES D101 PFVDDGS1ZB60 DIODE SI D102 MA4056 DIODE ...

Page 226: ... 1M R177 ERJ3GEYJ823 82k Ref No Part No Part Name Description Remarks R178 ERJ3GEYJ333 33k R179 ERJ3GEYJ822 8 2k R184 ERJ3GEYJ153 15k R185 ERJ3GEYJ153 15k R186 ERJ3GEYJ473 47k R187 ERJ3GEYJ333 33k R188 ERJ3GEYJ333 33k R189 ERJ3GEYJ333 33k R200 ERJ3GEY0R00 0 R201 ERJ3GEY0R00 0 R202 ERJ3GEYJ101 100 R203 ERJ3GEYJ101 100 R204 ERJ3GEYJ101 100 R205 ERJ3GEY0R00 0 R206 ERJ3GEYJ103 10k R207 ERJ3GEYJ103 10k...

Page 227: ... PQCUV1H104ZF 0 1 C210 PQCUV1H104ZF 0 1 C213 PQCUV1H104ZF 0 1 C214 PQCUV1H104ZF 0 1 C230 ECUV1H103KBV 0 01 C231 PQCUV1H104ZF 0 1 C250 PQCUV1H105JC 1 S C251 ECEA0JU102 1000 C252 ECUV1H102KBV 0 001 C524 ECUV1H103KBV 0 01 Ref No Part No Part Name Description Remarks C525 ECUV1H103KBV 0 01 C526 ECUV1H103KBV 0 01 C528 ECUV1H104ZFV 0 1 11 4 OPERATION BOARD PARTS Ref No Part No Part Name Description Rema...

Page 228: ...VDSF5LC20U DIODE SI S D202 PFVDD1NL20U DIODE SI S COIL L101 ELF15N007A COIL Ref No Part No Part Name Description Remarks COMPONENTS PARTS L103 EXCELDR35 COMPONENTS PARTS CONNECTORS CN31 PQJP2D98Z CONNECTOR 2PIN CN301 PQJP7G30Z CONNECTOR 7PIN FUSE F101 PQBA1C50NBKL FUSE S PHOTO ELECTRIC TRANSDUCERS PC101 0N3131SKU PHOTO ELECTRIC TRANSDUCER S TRANSFORMER T101 PFLTSRW2820E TRANSFORMER S VARIABLE RESI...

Page 229: ...K CN201 PQJJ1C002Z JACK CN202 PQJP2D13Z CONNECTOR 2 PIN ELECTRICAL PARTS Ref No Part No Part Name Description Remarks E500 PQJM122Z MICROPHONE E501 PQEFBDB111GF BUZZER E502 PFHX1287Z INSULATOR RF SHEET VARIABLE RESISTORS VR201 EVN5ESX50B15 VARIABLE RESISTOR VR202 EVN5ESX50B54 VARIABLE RESISTOR COILS L201 PQLQR3ER10K COIL L202 PQLQR3ER10K COIL L203 PQLQR3ER10K COIL CRYSTAL OSCILLATOR X901 PQVCL3276...

Page 230: ...V1C104KBV 0 1 C232 PQCUV1H105JC 1 S C233 ECUV1C104KBV 0 1 C234 PQCUV1H105JC 1 S C235 PQCUV1H105JC 1 S C236 PQCUV1C474ZF 0 47 C237 PQCUV1H105JC 1 S C238 ECUV1H101JCV 100P C239 ECUV1C104KBV 0 1 S C240 ECUV1H471JCV 470P Ref No Part No Part Name Description Remarks C242 ECUV1C104KBV 0 1 S C244 ECUV1H472KBV 0 0047 C246 ECUV1H101JCV 100P C247 ECUV1C104KBV 0 1 C251 ECUV1H822KBV 0 0082 C253 ECUV1H822KBV 0...

Page 231: ...CONNECTOR 5P EC7 PQZZ11K4Z CONNECTOR 11P EC8 PQZZ2K13Z CONNECTOR 2P EC9 PFZZ10K3Z CONNECTOR 10P EC10 PFZZ17K2Z CONNECTOR 17P KM79811245C0 BASIC FACSIMILE TECHNIQUE For training service technicians Note Tools and Extension Cords are useful for servicing They make servicing easy 231 KX FPC91 ...

Page 232: ...C DIAGRAMS Note 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the development of new technology 232 KX FPC91 ...

Page 233: ...21 C526 R528 R530 D508 R543 DA501 Q507 R547 C543 R633 R534 C546 R548 R546 C511 C634 R634 R631 R632 C544 R517 C547 C548 C549 R553 C550 R555 R551 C577 R564 C571 C573 C566 R570 R627 R625 R596 C603 R598 R603 R615 C542 C541 R623 R541 R542 R540 R539 R538 R537 R536 R535 L525 R533 R605 C582 R585 Q509 R575 C579 R571 C599 R583 R586 R588 C600 C595 C598 L522 L523 R628 C627 C633 C632 R624 L527 R582 C593 R578 R...

Page 234: ...591 C610 IC505 R581 R639 4 1 5 8 R638 X504 C596 AG C564 R626 R589 R590 Q508 C555 R600 5VA R601 C617 C624 L526 C616 RA506 R573 RA505 IC512 R556 PS501 Q511 L518 C565 C580 R611 R610 C560 C569 L517 5 4 1 3 IC502 R594 R620 CN506 R619 J502 1 7 IC507 CN510 IC506 CN505 C509 R505 C502 R506 5VD 24V R520 R526 1 D505 D506 IC508 CN502 R513 E E Q503 D501 R503 L508 D504 L512 L511 L507 R504 Q512 R529 C527 C522 R5...

Page 235: ...18 C112 R112 C113 R114 R115 R117 C114 R116 C110 R113 R111 C111 R119 R147 C145 R109 Q101 C116 C124 C115 C135 8 6 1 4 IC101 R150 R151 C152 R257 C256 JJ230 C231 C230 R233 R249 Q232 C250 L108 C525 C524 23 10 17 15 10 5 1 5 1 CN106 CN101 1 PC103 R223 22 IC104 33 34 44 1 11 C213 R134 C132 C155 C154 R137 R157 C196 R158 C158 24 IC103 1 12 R188 C192 R136 R135 C177 R179 C185 C183 C182 R184 C186 R172 C173 C1...

Page 236: ...2 J289 J235 J217 ZNR102 JJ121 JJ115 JJ116 JJ128 J236 J237 J281 J241 J240 J202 F201 250mA 125V CN101 CN106 1 1 10 17 J239 JJ111 JJ110 J233 J286 JJ127 J272 J270 J271 J210 J243 J242 J252 J245 J269 J275 J211 J277 J214 PC104 D106 J264 J263 J256 J257 J259 JJ135 J215 JJ129 JJ120 Q102 R144 R105 R140 R143 E AUTO CH ADJ CH1 ADJ CH2 ADJ CH3 SW102 D200 D201 VR101 C190 C189 C174 VR102 C194 R237 R235 J258 J262 ...

Page 237: ... J334 J326 J327 SW351 J320 PCB CH MIC CH J325 R386 R378 R377 J322 J321 J323 J304 J333 C365 C361 C363 C364 J301 J306 J305 J308 J313 J312 J311 J310 J309 J319 C303 J335 JJ331 J336 J307 LED301 R375 R380 R381 R382 R383 R376 C362 C367 J329 C368 C358 C359 CN301 CN303 1 11 C360 C352 J303 J302 JJ332 J330 3 1 C369 PFUP1188YA IC302 R357 C354 R354 C356 R352 C353 R351 R364 C304 C301 R353 R315 C316 R316 R301 R3...

Page 238: ...T RISK OF FIRE REPLACE ONLY WITH SAME TYPE AND RATINGS SECONDARY PRIMARY OF FUSE F101 C206 C204 D202 CN31 L N R101 F101 D104 D103 D102 D101 J1 C102 R137 IC101 R127 C124 R126 R124 C121 D107 J3 R122 R105 R128 D106 R109 C108 R104 D105 L103 C119 R106 T101 R224 C202 D201 R203 C201 IC202 R205 CN301 24 7 1 C203 R202 R108 J4 R103 C105 C103 J3 R102 C106 C101 ZNR101 R136 C123 R125 Q101 C109 D108 PC101 R221 ...

Page 239: ...Q201 CLOCK SI R260 R905 X902 X901 Vdd R201 Q202 RXDATA R204 C208 R274 Q901 R220 R241 R242 R240 R234 VR203 R280 C247 IC202 C238 C251 C246 R235 R236 R259 C242 R231 C236 C235 R232 R282 R208 R233 C244 C259 C240 C237 C281 C280 R281 R216 C283 C253 C282 R251 VR201 C902 MOD TP212 C234 C233 J202 R229 R230 R228 C232 C231 C230 C228 C229 R224 J203 R227 R225 C206 SPÐ SP R902 15 28 29 42 43 56 14 1 IC201 C905 C...

Page 240: ...13 8 MEMO KX FPC91 240 ...

Page 241: ... RXD 4 RTS 5 CTS 6 DSR 7 GND 8 DCD 9 DTR 10 RI 11 FG R501 0 R502 0 R504 1K 5VD 5VD NC C506 NC C507 NC C505 12V 12V C511 Z0 1u R518 6 8K Q504 R530 3 9K R528 3 9K C516 35V33u R523 6 8K NC C526 R521 4 7 R516 22 C514 35V33u Q505 D504 R519 8 2K D506 Q506 C524 35V10u R524 15K R525 15 D507 D505 R551 1K EYESYNC EYECLK EYEXY YCLK X503 32 256MHZ R560 100 C561 J10P C559 J12P L517 R592 1K R591 2 2K C607 Z0 1u...

Page 242: ...SC2 22 OSC1 23 NC 24 H_LED 25 RX_MUTE 26 TX_MUTE 27 TEST0 28 BUSY_CDL 29 SDATA_FAX 30 SDATA_CDL 31 F_CLK 32 BUSY_FAX 33 S_ENB 34 NC 35 P_DOWN 36 S_CHARGE 37 H_CHARGE 38 IC 39 VDD 40 PLL_STB 41 PLL_CLK 42 ALARM 43 PLL_DATA 44 R CN107 7 HLED 6 5VR 5 H 4 H_C 3 H 2 FG 1 FG NC R222 Z0 1u C214 R216 1k 5VA NC C158 5VB NC C211 R215 0 NC C212 L211 0 K1000p C252 Q250 Q251 D250 D252 1 3 2 D251 3 9V 6 3V 1000...

Page 243: ...8 GND 20 XL14 39 GND 21 XL15 NC C351 NC R311 NC R312 LED302 LED303 C354 R355 R353 2 IC302 1 2 3 4 8 C353 R356 1 IC302 5 6 7 C355 R354 C356 SW352 3 1 4 2 R315 100 C316 K0 01 R314 4 7K SW353 3 1 4 2 R317 100 C317 K0 01 R316 4 7K SW305 AUTO ANSWER SW310 IQ FAX SW315 8 SW320 7 SW325 INTERCOM SW330 DIRECTORY PROGRAM SW335 5V CN303 1 MICIN 2 3 GND SW301 NC C358 NC C359 NC R375 NC R376 NC C360 NC C361 NC...

Page 244: ...047 C103 1000p L101 ZNR101 R101 1M 470V L N CN31 1 GND R127 PC101 C124 0 1 1 8K C101 0 1 F101 SA125V D104 R105 0 22 2 R124 180 C121 4700p 4 5 3 6 2 7 1 8 R122 620 R125 10K D107 IC101 D108 R108 15 IC202 R128 180 D106 Q101 G R104 100K 1 T101 TRANS D201 1 24V 2 24V 3 24V 4 GND CN301 5 GND 6 GND 7 5V C202 1000p 1K D201 C206 1000p R223 IC201 C205 1 50 100 D S R203 47 C204 47 35 Cycle 12 4 µs 55V 25V 0V...

Page 245: ... 068u C217 K0 01u C204 Z0 1u C904 J100p C238 K0 1u C247 Z0 1u C242 Z0 47u C236 Z0 1u C901 Z0 1u C221 K0 1u C210 Z0 1u C262 K0 1u C233 Z0 1u C202 J18p C906 C211 J100p Z1 0u C235 Z1 0u C232 D4p C268 J470p C240 K1500p C220 C230 Z1 0u K8200p C251 J100p C203 K0 01u C218 K4700p C244 Z0 1u C271 K0 1u C213 K6800p C228 6 3V 10u C206 NC R212 D205 D206 NC R219 C222 6 3V 220u Q205 6 3V 47u C209 Q202 J202 NC N...

Page 246: ...14 6 CHARGE BOARD CN651 1 HLED 2 5VR 3 M_ 4 M_C 5 M_ 6 FG 7 FG CN652 CHG LED651 R651 270 L651 L652 L653 CN653 CHG C CN654 CHG D651 D652 D653 KX FPC91 246 ...

Page 247: ...247 KX FPC91 Y Q KXFPC91 Printed in Japan ...

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