Panasonic KX-FT907BX-B Service Manual Download Page 174 | Manualshive

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17 SCHEMATIC DIAGRAM

17.1. DIGITAL BOARD (PCB1)

(1)

(2)

(3)

(4)

(5)
(6)

(7)

(8)

(9)

(10)

(11)

(12)
(14)

(15)

(16)

(17)

(18)
(19)

(20)

(21)
(23)

(22)

(24)

(25)

(26)

(27)

(13)

+5VD

+24V

C11

Z0.1u

( )

C10

C12

Z0.1u

+5VA

C13

6.3V100u

+5VD

+24V

DG

+5VA

IC2

1

VPP

2 A16

3 A15

4 A12

5 A7

6 A6

7 A5

8 A4

9 A3

10

A2

11

A1

12

A0

13

D0

14

D1

15

D2

16

GND

17

D3

18

D4

19

D5

20

D6

21

D7

22

CE

23

A10

24

OE

25

A11

26

A9

27

A8

28

A13

29

A14

30

A17

31

PGM

32

VCC

C9

Z0.1u

1.5K 2W

R10

BR1

Q3

Q2

1
2
3
4

5

6

7

8

R22

4.7K

( )

C4

NC

( )

C8

NC

IC8

1 DIR
2 A1
3 A2
4 A3
5 A4
6 A5
7 A6
8 A7
9 A8

10 GND

11

B8

12

B7

13

B6

14

B5

15

B4

16

B3

17

B2

18

B1

19

G

20

VCC

R21

5.6K

+24V

( )

C6

NC

+5VD

+5VD

CN4

1

COM

2

COM

3

GND

4

GND

5

+5V

6

TM

7

STB1

8

STB2

9

STB3

10

THCLK

11

THLAT

12

THDAT

CN6

1

1

2

2

R6

NC

1K

R4

CN5

1

1

2

2

1K

R3

4.7K

R2

+5VD

4.7K

R1

+5VD

( )

( )

R5

NC

0

L2

CN7

1

FG

2

MICIN

3

NC

4

AG

5

+5V

6

RESET

7

DG

8

SCLK

9

START

10

TXD

11

LATCH

12

RXD

R7

270

BEAD

L1

L6

BEAD

+5VD

R51

470

Z0.1u

C29

C23

Z0.1u

( )

J1

C16

Z0.1u

XRESET

R29 22K

Z0.1u

C44

( )

( )

R56

BA

T1

ADR14

+5VD

0

R58

+2.5V

R52

100

C28

Z0.1u

+2.5V/BATIN

Q5

RA1

100

1

2

3

45

6

7

8

Z0.1u

C51

+2.5V

+2.5V/BATIN

C32

Z0.1u

( )

C46

Q6

( )

C37

NC

( )

C47

( )

C22

XTEST

RA4

100

1

2

3

45

6

7

8

X1

32.768KHz

BR3

( )

R37

ADR15

R46

330K

+3.3VD

C35

J15p

+3.3VD

C34

K1000p

Z0.1u

C20

+3.3VD

C25

Z0.1u

C48

Z0.1u

XNMI

Z0.1u

C41

C33

K0.1u

D3

+3.3V/BATIN +3.3V/BATIN

R48

2.2K

R30

43K

C50

Z0.1u

( )

C21

+3.3VD

C26

K2200p

C39

J12p

R40

F1.1K

Z0.1u

C17

R47

4.7M

R35

4.7K

1K

R57

C19

J100p

C18

Z0.1u

ADR13

R33

20K

+5VD

+2.5V

C30

K0.1u

R36

33K

RA3

100

1

2

3

45

6

7

8

Z0.1u

C31

R55

C40

Z0.1u

+3.3VA

C38

Z0.1u

C49

Z0.1u

IC3

1

VOUT

2

VDD

3

GND

4

VDET

5

CE

( )

R45

IC1

1

VSSA

2

VDD

A3.3

3

AIN1

4

AIN2

5

AIN3

6

AMON

7

VSSA

8

X32OUT

9

X32IN

10

3.3V/BA

TTIN

11

XBA

CKEN

12

XRAMCS

13

3.3V/BA

TT

OUT

14

2.5V/BA

TTIN

15

FTG

16

F1

17

F2/OP

18

F

A/OP

19

CPC/IP

20

R

VN/IP

21

IRD

A

TXD/IOP81

22

IRD

ARXD/IOP80

23

TXD/IOP30

24

RXD/IOP31

25

XR

TS/IOP32

26

XCTS/IOP33

27

VDD2.5V

28

T

ONE1

29

T

ONE2

30

V

OL1REF

31

V

OL2OUT

32

V

OL3IN

33

XNMI

34

FMEND0/IOP26

35

VDD3.3V

36

VSS

37

VSS

38

VDD3.3V

39

MIDAT/IOP45

40

MICLK/IOP46

41

MILAT/IOP47

42

20KOSC/IOP56

43

XWAIT/IOP60

44

XHSTRD/IOP40

45

XHSTWR/IOP41

46

XDPRBE/MUX/OP53

47

ADR15/OP

48

ADR14/OP

49

ADR13/OP

50

VDD2.5V

51

XOUT

52

XIN

53

VSS

54

VDD3.3V

55

XTEST

56

TEST1

57

TEST2

58

TEST3

59

TEST4

60

XMDMINT

61

XMDMCS

62

XRAS/IOP42

63

XCAS1/IOP43

64

XCAS2/IOP44

65

XRESCS2/OP71

66

DB3

67

DB2

68

DB4

69

DB1

70

DB5

71

VDD3.3V

72

VSS

73

VSS

74

VDD3.3V

75

DB0

76

DB6

77

DB7

78

XR0MCS

79

XRD

80

XWR

81

ADR0

82

ADR1

83

ADR2

84

ADR3

85

ADR4

86

ADR5

87

VSS

88

VDD2.5V

89

ADR6

90

ADR7

91

ADR8

92

ADR9

93

ADR10

94

ADR11

95

ADR12

96

RBA0

97

RBA1

98

RBA2

99

RBA3

100

RBA4

101

RBA5/OP

102

RBA6/IOP96

103

STB1

104

STB2

105

STB3

106

XRESET

107

VDD3.3V

108

VSS

109 VSS
110 VDD3.3V
111 XDRESET
112 VDD5.0V
113 VSS
114 XRESETI
115 XWDERR
116 THDAT
117 THCLK
118 THLAT
119 STBNP
120 RM0/IOP00
121 RM1/IOP01
122 RM2/IOP02
123 RM3/IOP03
124 RXE/IP04
125 TM0/IOP10
126 VDD2.5V
127 VSS
128 TM1/IOP11
129 TM2/IOP12
130 TM3/IOP13
131 TXE/IP14
132 KSTART
133 KLATCH
134 KSCLK
135 KTXD
136 KRXD
137 FMEMCLK/IOP24
138 FMEMDI/IOP25
139 ADSEL1
140 VDDA2.5V
141 VREFB
142 VCL
143 VREFT
144 VSSA

C36

Z0.1u

R32

2.2K

+3.3VD

C43

Z0.1u

C24

Z0.1u

R41

F36K

AMON

C15

K1000p

R31

4.7

+3.3VD

+5VA

( )

C80

NC

( )

C83

NC

+2V

0

L15

6.3V47u

C78

0.25A

F2

12K

R88

8.2K

R89

( )

C77

NC

+3.3V/BATIN

100

R44

R49

100

+3.3VD

100

R43

100

R23

F1

1.25A

Q4

R20

1.5K 1/2W

+24V

Q1

R11

0

CN3

1

COM

2

NB

3

NA

4

B

5

A

+5VD

D2

BR4

IC7

1

2

3

4

5

6

7

8

GND

9

10

11

12

13

14

15

16

R19

820

D1

( )

C5

NC

Z0.1u

C45

Z0.1u

C42

Z0.1u

C27

+3.3V/BATIN

100

R54

+5VD

4.7K

R28

K1000p

C7

( )

R34

NC

100

L8

100

L5

100

L4

100

L7

K1000p

C1

( )

NC

C2

( )

Q12

( )

C114

NC

TEST

1K

R115

+3.3VD

B

A

+24V1

Z0.1u

C120

R42

100

R39

100

R38

100

R27

100

R24

100

R25

100

R26

100

R16

100

R13

100

R17

100

R15

100

R12

100

R14

100

PG

PG

PG

PG

IC4

1

NC

2

A16

3

A14

4

A12

5

A7

6

A6

7

A5

8

A4

9

A3

10

A2

11

A1

12

A0

13

I/O1

14

I/O2

15

I/O3

16

GND

17

I/O4

18

I/O5

19

I/O6

20

I/O7

21

I/O8

22

CE1

23

A10

24

OE

25

A11

26

A9

27

A8

28

A13

29

R/W

30

CE2

31

A15

32

VDD

PG

100

L3

RA2

100

1

2

3

45

6

7

8

R50

100

BEAD

L19

( )

C128

NC

BEAD

L20

CN1

1

+5V

2

DG

3

PG

4

PG

5

+24V

6

+24V

7

+24V

XSTB2

XSTB1

PWDN

FTG

XTHDAT

XTHLAT

XSTB3

/MDMCS

XTHCLK

D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]

D[0]
D[1]
D[2]

D[3]

D[4]

D[5]

D[6]

D[7]

A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[10]
A[11]
A[12]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]

RBA[5]

THON

TONE1EN

TONE2EN

HSRXEN

RXE

RM[3]

RM[2]

RM[1]

RM[0]

MOT_POS

A[0]

A[1]

A[2]

A[3]

A[4]

A[5]

A[6]

A[7]

A[8]
A[9]

A[10]

A[11]

RBA[3]

RBA[0]

RBA[1]

RBA[2]

RBA[4]

/CD

DATA

DCLK

KRXD

KTXD

KSTART
KLATCH
KSCLK

CISSEL

CISLED

F1

SIG

CISON

CPC

HSTXMUTE

BELL

TELRXEN

PSHOR

T

MDMTXEN

THON

RLY
CUT_POS

/MDMRST

SPMUTE

PCONT

PCONT

OPRESET

/DR

RM[2]

RM[0]

RBA[5]

RBA[3]

A[0]

A[2]

A[4]

A[6]

A[8]

A[10]

A[12]

RBA[1]

MOT_POS

CUT_POS

KSCLK

PAPER

KRXD

OPRESET

KSTART

XSTB1

XSTB2

XSTB3

XTHCLK

XTHLAT

XTHDAT

RBA[4]

RBA[2]

RBA[0]

A[11]

A[9]

A[7]

A[5]

A[3]

A[1]

KLATCH

KTXD

MA[1]

MA[2]

MA[3]

MA[4]

MA[0]

RM[3]

RM[1]

RXE

JA

M

HOOK

TO POWER
UNIT

TO THERMAL
HEAD

CUTTOR
POSITION
SENSOR

MOTOR
POSITION
SENSOR

XWDERR

TO MOTOR

MOTOR BLOCK

THERMAL HEAD

BLOCK

4M ROM

1M SRAM

OPE-PANEL BLOCK

+5VD TO +3.3VD

+3.3VD TO +2.5V

+3.3V/BATIN TO

+5VA TO +2V

+2.5V/BATIN

T5

T4

T3

T2

PRINTING
23~24V

STB1

STB2

STB3

LATCH

5V

0V

WATCHDOG ERROR

0V (WATCH DOG
ERROR OCCUR)

CLOCK

5V
0V

THERMAL
HEAD TEMP

32.768kHz

24MHz

174

KX-FT907BX-B / KX-FT907BX-W

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Summary of Contents for KX-FT907BX-B

Page 1: ...NT INFORMATION ABOUT LEAD FREE PbF SOLDERING If lead free solder was used in the manufacture of this product the printed circuit boards will be marked PbF Standard leaded Pb solder can be used as usual on boards without the PbF mark When this mark does appear please read and follow the special instructions described in this manual on the use of PbF and how it might be permissible to use Pb solder ...

Page 2: ...AMMING AND LISTS 42 7 4 TEST FUNCTIONS 45 7 5 TROUBLESHOOTING DETAILS 52 8 CIRCUIT OPERATIONS 103 8 1 CONNECTION DIAGRAM 103 8 2 GENERAL BLOCK DIAGRAM 104 8 3 CONTROL SECTION 106 8 4 FACSIMILE SECTION 113 8 5 SENSORS AND SWITCHES 123 8 6 MODEM SECTION 127 8 7 ANALOG UNIT BLOCK DIAGRAM 134 8 8 NCU SECTION 135 8 9 ITS INTEGRATED TELEPHONE SYSTEM AND MONITOR SECTION 137 8 10 ATAS AUTOMATIC TELEPHONE ...

Page 3: ...e careful not to heat too long PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the c...

Page 4: ...TO RECOGNIZE THAT Pb FREE SOLDER IS USED P C Boards marked as PbF use Pb Free solder See the figure below Pb Free is not used the Power Supply Board of this unit Example Digital Board 4 KX FT907BX B KX FT907BX W ...

Page 5: ...ted from the chassis by design These will read infinity 4 If the measurement is outside the specified limits there is a possibility of a shock hazard 1 4 FOR 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 c...

Page 6: ... 7 PERSONAL SAFETY PRECAUTIONS 1 7 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 them wi...

Page 7: ...g the AC power cord before disassembling for service 1 8 SERVICE PRECAUTIONS 1 8 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 electricity...

Page 8: ...D 15 Characters Broadcast up to 10 Stations Integrated telephone system One touch dial 22 items Navigator directory 100 items Digital Duplex Speakerphone Digital answering system Voice Time Day Stamp Quick Slow Playback Speeds 2 2 OPTIONAL ACCESSORIES Model No Description Specifications KX A106 Standard thermal recording paper 216 mm 30 m roll with 25 mm core Note Only use the included specified r...

Page 9: ...ption Approx 40 W When receiving 20 black document Copy Approx 40 W When copying the ITU T No 1 Test Chart Maximum Approx 125 W When receiving a 100 black document Power Supply 220 240 V AC 50 60 Hz Fax Memory Capacity Approx 20 pages of document memory Based on the ITU T No 1 Test Chart in standard resolution when no voice messages have been recorded Voice Memory Capacity 3 Approx 20 minutes of r...

Page 10: ...r may not be shown in all illustrations in this operating instructions 5 Document exit 6 Microphone 7 Document entrance 8 Cover open button Note Remove all the blue shipping tapes before installation 3 INSTALLATION 3 1 LOCATION OF CONTROLS 3 1 1 FRONT VIEW 10 KX FT907BX B KX FT907BX W ...

Page 11: ...d If the line is busy when you make a phone call using the DIGITAL SP PHONE button the unit will automatically redial the number up to 2 times To insert a pause during dialling 14 MUTE To mute your voice to the other party during a conversation Press this button again to resume the conversation 15 DIGITAL SP PHONE For speakerphone operation 16 MENU To initiate or exit programming 17 NAVIGATOR VOLU...

Page 12: ... easily accessible Be sure to use the telephone line cord included in this unit Do not extend the telephone line cord Note To avoid malfunction do not position fax machine near appliance such as TVs or speakers which generate an intense magnetic field If any other device is connected on the same line this unit may disturb the network condition of the device 12 KX FT907BX B KX FT907BX W ...

Page 13: ...0 to 80 without condensation Power cord length should be less than 5 meters 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 from functioning properly To protect t...

Page 14: ...e the cover securely by pushing down on 6 Press FAX START to cut the paper Note If the paper is secured with glue or tape cut approximately 15 cm from the beginning of the roll before installing it When the power cord is connected a message is printed each time the cover is opened then closed If the recording paper is installed upside down the massage will not be printed Install the paper correctl...

Page 15: ...er Badly curled creased or torn paper Paper with a coated surface Paper with a faint image Paper with printing on the opposite side that can be seen through the other side i e newspaper Check that ink paste or correction fluid has dried completely To transmit the document with a width of less than standard A4 size 210 mm we recommend using a copy machine to copy the original document onto A4 or le...

Page 16: ... delete a character Press or to move the cursor to the character you want to delete and press STOP 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 MUTE to insert a space and enter the character 4 Press SET The underbar shows a position of the cursor 5 Enter your logo up to 30 characters See the character table on pa...

Page 17: ... the following order a Uppercase letters b Number c Symbol d Lowercase letters If you press the order will be reversed 2 Press to insert the character The character displayed in step 1 is inserted 3 Return to step 1 to enter the next character 3 3 5 1 TO SELECT CHARACTERS WITH THE DIAL KEYPAD Pressing the dial keys will select a character as shown below 17 KX FT907BX B KX FT907BX W ...

Page 18: ...ation 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 completing the re...

Page 19: ... AC INLET P 33 6 Glass If the glass is dirty clean with a dry soft cloth Refer to DOCUMENT FEEDER P 21 7 Abnormal wear and tear or loose parts Replace the part Check if the screws are tight on all parts 4 1 2 2 MAINTENANCE CYCLE No Item Cleaning Cycle Replacement Cycle Procedure 1 Separation Roller Ref No 141 3 months 7 years 10 000 documents Refer to HOW TO REMOVE THE MOTOR BLOCK P 35 2 Separatio...

Page 20: ...eased 3 Remove the recording paper 4 Cut off the wrinkled portion 5 Install the recording paper and close the cover securely by pushing down on both sides 4 2 JAMS 4 2 1 RECORDING PAPER JAMS When the recording paper has jammed in the unit The display will show the following 20 KX FT907BX B KX FT907BX W ...

Page 21: ... appear on the original document when transmitting or copying 1 Disconnect the power cord and the telephone line cord 2 Open the cover by pressing the cover open button 3 Clean the document feeder rollers and rubber flap with a cloth moistened with superpolite rubbing alcohol and let all parts dry thoroughly Clean the white plate and scanner glass with a soft and dry cloth Caution Do not use paper...

Page 22: ...over open button and remove the recording paper 3 Clean the thermal head and head cover with a cloth moistened with superpolite rubbing alcohol and let all parts dry thoroughly Caution To prevent a malfunction due to static electricity do not use a dry cloth and do not touch the thermal head directly 4 Connect the power cord and the telephone line cord 5 Install the recording paper and close the c...

Page 23: ... 1 HOW TO REMOVE PAPER STACKER P 25 A 2 HOW TO REMOVE THE OPERATION PANEL BLOCK P 26 A 3 HOW TO REMOVE THE OPERATION BOARD AND LCD P 27 A 4 HOW TO REMOVE THE IMAGE SENSOR P 28 A 5 HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT P 29 A 6 HOW TO REMOVE THE DOCUMENT TRAY P 30 23 KX FT907BX B KX FT907BX W ...

Page 24: ...ERATION PANEL BLOCK P 26 B 1 HOW TO REMOVE THE BOTTOM FRAME P 31 B 2 HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER P 32 B 3 HOW TO REMOVE THE DIGITAL ANALOG AND POWER SUPPLY BOARD AND AC INLET P 33 B 4 HOW TO REMOVE THE ROLLERS P 34 B 5 HOW TO REMOVE THE MOTOR BLOCK P 35 24 KX FT907BX B KX FT907BX W ...

Page 25: ...6 DISASSEMBLY INSTRUCTIONS 6 1 HOW TO REMOVE PAPER STACKER 25 KX FT907BX B KX FT907BX W ...

Page 26: ...6 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 26 KX FT907BX B KX FT907BX W ...

Page 27: ...6 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 27 KX FT907BX B KX FT907BX W ...

Page 28: ...6 4 HOW TO REMOVE THE IMAGE SENSOR 28 KX FT907BX B KX FT907BX W ...

Page 29: ...6 5 HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT 29 KX FT907BX B KX FT907BX W ...

Page 30: ...6 6 HOW TO REMOVE THE DOCUMENT TRAY 30 KX FT907BX B KX FT907BX W ...

Page 31: ...6 7 HOW TO REMOVE THE BOTTOM FRAME 31 KX FT907BX B KX FT907BX W ...

Page 32: ...6 8 HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER 32 KX FT907BX B KX FT907BX W ...

Page 33: ...6 9 HOW TO REMOVE THE DIGITAL ANALOG AND POWER SUPPLY BOARD AND AC INLET 33 KX FT907BX B KX FT907BX W ...

Page 34: ...6 10 HOW TO REMOVE THE ROLLERS 34 KX FT907BX B KX FT907BX W ...

Page 35: ...6 11 HOW TO REMOVE THE MOTOR BLOCK 35 KX FT907BX B KX FT907BX W ...

Page 36: ...CROSS REFERENCE HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT P 29 36 KX FT907BX B KX FT907BX W ...

Page 37: ...37 KX FT907BX B KX FT907BX W ...

Page 38: ...6 12 INSTALLATION POSITION OF THE LEAD WIRES 38 KX FT907BX B KX FT907BX W ...

Page 39: ...6 13 INSTALLATION OF THERMAL HEAD 39 KX FT907BX B KX FT907BX W ...

Page 40: ...k 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 case 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 have not f...

Page 41: ... message instructions to print out the document When making a copy the document being stored exceeds the memory capacity of the unit Press STOP to clear the message Divide the document into sections The other partyís fax machine is busy or has run out of recording paper Try again Your TAD FAX greeting message is not recorded Record a message The voice guidance feature is set to OFF Activate featur...

Page 42: ...e normal programs are those 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 ...

Page 43: ...ng the document feed position 01 99 step 01 99 50 When the ADF function is incorrect adjust the feed position 8 step 1mm If it is difficult to feed documents raise the set value If multi document feed occurs lower the set value 550 Memory clear Press START SET 551 ROM version and sum check Press START SET 552 DTMF signal tone test 1 ON 2 OFF 1 2 2 Press START SET 553 Setting the FAX monitor functi...

Page 44: ...tory data To reset the value to the default one except History data Please restart a power supply after clearing a memory 717 Transmit speed select 1 9600BPS 2 7200BPS 3 4800BPS 4 2400BPS 1 4 1 Adjusts the speed to start training during FAX transmission 718 Receive speed select 1 9600BPS 2 7200BPS 3 4800BPS 4 2400BPS 1 4 1 Adjusts the speed to start training during FAX reception 719 Ringer off in ...

Page 45: ...ON P 100 START LCD CHECK Service Mode 5 5 8 Check the LCD indication Illuminates all the dots to check if they are normal Refer to OPERATION PANEL SECTION P 158 START DTMF SINGLE TEST Service Mode 5 5 2 Outputs the DTMF as single tones Used to check the frequencies of the individual DTMF tones Refer to DTMF SINGLE TONE TRANSMIT SELECTION P 46 1 ON 2 OFF KEY CHECK Service Mode 5 6 1 Checks the butt...

Page 46: ... in DTMF signal will not work 7 4 2 BUTTON CODE TABLE Code Button Name Code Button Name Code Button Name 03 AUTO ANSWER 1D LOWER 00 NO INPUT 04 FAX START 31 1 01 STOP 05 MENU 32 2 5A STATION 1 07 HELP 33 3 5B STATION 2 08 SP PHONE 34 4 5C STATION 3 09 COPY 35 5 5D STATION 4 0A MUTE 36 6 5E STATION 5 0B PREV 37 7 5F STATION 6 0C NEXT 38 8 60 STATION 7 0D VOLUME 39 9 61 STATION 8 0E VOLUME 3A 0 62 S...

Page 47: ...ters for the desired codes can be changed The procedure for changing and listing parameters is described on ENTERING THE REMOTE PROGRAMMING MODE AND CHANGING SERVICE CODES P 47 Also before exiting the remote programming mode it is advisable to obtain a new list to confirm that only the desired parameters were changed Hint Since the connected telephone is in use during the remote programming mode i...

Page 48: ...K 070 Pager call 1 ON 2 OFF OFF NG 076 Connecting tone 1 ON 2 OFF ON OK 080 Set the default YES NO NO NG 501 Pause time set 001 600 X 100 msec 050 OK 502 Flash time set 01 99 X 10 msec 70 OK 503 Dial speed set 1 10pps 2 20 pps 10 OK 510 Vox time 1 6sec 2 4sec 6sec OK 520 CED frequency select 1 2100Hz 2 1100Hz 2100 OK 521 International mode select 1 ON 2 OFF ON OK 522 Auto standby select 1 ON 2 OFF...

Page 49: ...N OK 722 Redial tone detect 1 ON 2 OFF ON OK 731 CPC mode 1 A 2 B 3 OFF A OK 763 Friendly reception CNG detection select 1 10S 2 20S 3 30S 20S OK 771 T1 timer 1 35 sec 2 60 sec 35 sec OK 774 T4 timer 00 99 X 100ms 00 OK 775 Monitoring of message transfer 1 ON 2 OFF OFF OK 815 Sensor check Press START NG 841 Digital SP Phone RX TX check 1 SP Phone NG 882 Journal 3 1 START NG 991 Transmit basic list...

Page 50: ...7 4 5 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 50 KX FT907BX B KX FT907BX W ...

Page 51: ...7 4 6 SERVICE MODE SETTINGS Example of a printed out list 51 KX FT907BX B KX FT907BX W ...

Page 52: ...can be tracked to a specific block or area for example the Digital Board or Image Sensor A variety of fault descriptions from customers often point to the same area and for this reason careful analysis of the reported symptoms is required After every repair test all functions to ensure no problems are evident 7 5 2 STARTING TROUBLESHOOTING Select the appropriate troubleshooting method according to...

Page 53: ...DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION P 95 Error code is displayed See HOW TO OUTPUT THE JOURNAL REPORT P 71 Cannot talk See ANALOG BOARD SECTION P 93 DTMF tone doesn t work Handset Monitor sound volume 7 5 3 1 SIMPLE CHECK LIST SERIAL NO DATE FUNCTION JUDGEMENT REFERENCE FAX operation Transmission OK NG Receiving OK NG Copy operation FINE mode OK NG PHOTO mode OK NG Telephone operatio...

Page 54: ...CUMENT FEED SECTION 7 5 4 1 NO DOCUMENT FEED CROSS REFERENCE DIGITAL BOARD SECTION P 82 POWER SUPPLY BOARD SECTION P 96 SENSOR SECTION P 100 TEST FUNCTIONS P 45 DISASSEMBLY INSTRUCTIONS P 25 54 KX FT907BX B KX FT907BX W ...

Page 55: ...7 5 4 2 DOCUMENT JAM CROSS REFERENCE SENSOR SECTION P 100 DISASSEMBLY INSTRUCTIONS P 25 55 KX FT907BX B KX FT907BX W ...

Page 56: ...7 5 4 3 MULTIPLE FEED When using thick paper etc If the document will not feed CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 25 56 KX FT907BX B KX FT907BX W ...

Page 57: ...7 5 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 25 57 KX FT907BX B KX FT907BX W ...

Page 58: ...7 5 4 5 IMAGE IS DISTORTED WHEN PRINTING CROSS REFERENCE READ SECTION P 100 THERMAL HEAD SECTION P 102 TEST FUNCTIONS P 45 DISASSEMBLY INSTRUCTIONS P 25 58 KX FT907BX B KX FT907BX W ...

Page 59: ...7 5 4 6 BLACK OR WHITE VERTICAL LINES APPEAR CROSS REFERENCE DIGITAL BOARD SECTION P 82 TEST FUNCTIONS P 45 7 5 4 7 SKEWED RECEIVING IMAGE 59 KX FT907BX B KX FT907BX W ...

Page 60: ...7 5 4 8 EXPANDER PRINT WHEN PRINTING CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 25 7 5 4 9 WHEN COPYING OR PRINTING AN ABNORMAL SOUND IS HEARD FROM THE UNIT 60 KX FT907BX B KX FT907BX W ...

Page 61: ... with the receiver s fax 3 The fax receives successfully one time and fails another Copying is possible 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 internationa...

Page 62: ...7 5 5 1 DEFECTIVE FACSIMILE SECTION 7 5 5 1 1 TRANSMIT PROBLEM CROSS REFERENCE ADF AUTO DOCUMENT FEED SECTION P 54 OPERATION BOARD SECTION P 99 62 KX FT907BX B KX FT907BX W ...

Page 63: ...7 5 5 1 2 SOMETIMES THERE IS A TRANSMIT PROBLEM 63 KX FT907BX B KX FT907BX W ...

Page 64: ...eiving problem when sometimes the below errors may be occurred OUT OF PAPER CHHECK COVER UNIT OVERHEATED If it doesn t return automatically COVER OPEN etc reset the unit CHECK DOCUMENT Please refer to USER RECOVERABLE ERRORS P 41 for the above items Also when a hardware deformity occurs please check each sensor 64 KX FT907BX B KX FT907BX W ...

Page 65: ...7 5 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 65 KX FT907BX B KX FT907BX W ...

Page 66: ...n has been pressed for models with a START button the other party should be called manually if possible Another possibility is entering two pauses at the end of the auto dial number on the transmission side Then the count start time will be delayed for 2 pauses about 10 sec Cause 2 Erroneous detection due to an echo or echo canceler Echo Echo Canceler The signal from FAX1 reaches FAX2 via the stat...

Page 67: ... 75 msec between the CED signal and DIS signal to 500 msec This will give at least 250 msec to recover the echo canceler operation Refer to Fig c Service code 593 Time between CED and 300 bps Sending side The sending side FAX sends a DCS signal not after receiving the 1st DIS signal but after receiving the 2nd DIS signal Refer to Fig d Service code 594 Overseas DIS detection select 3 Sending side ...

Page 68: ... RECEPTION IMAGE ARE INCORRECT Long distance or international communication operation This symptom highly depends on the transmission and reception capability of the other FAX unit and the line conditions The countermeasures for this unit are shown below Transmission Operation Set the transmitting speed to 4800BPS service mode code No 717 or select the overseas mode Reception Operation If 80 or mo...

Page 69: ...blems The way of recording easily by using PC is shown as follows 2 Setting up FAX SIGNAL RECORDING JIG 3 Connecting PC and JIG 4 PC setting and recording 1 Set LINE IN to be valid in the volume control setting Refer to the PC instruction book 2 Start up the PC software SOUND RECORDER This software is bundled to Windows OS which can create WAV file Set the audio format PCM 22 050kHz 8bit mono 3 Cl...

Page 70: ... Please compress the recording data when you send attaching to E Mail because the data size will be so heavy Any software which can create WAV files is available 70 KX FT907BX B KX FT907BX W ...

Page 71: ... FTT is transmitted 5 48 COMMUNICATION ERROR SND No post message 6 49 COMMUNICATION ERROR SND RTN is transmitted 7 50 COMMUNICATION ERROR SND PIN is transmitted to PRI Q 8 51 COMMUNICATION ERROR SND PIN is transmitted 8 52 OTHER FAX NOT RESPOND SND Reception is finished when the T1 TIMER expires 8 53 ERROR NOT YOUR UNIT RCV DCN is received after transmission of NSC and DTC 9 54 ERROR NOT YOUR UNIT...

Page 72: ...Countermeasure 72 KX FT907BX B KX FT907BX W ...

Page 73: ...73 KX FT907BX B KX FT907BX W ...

Page 74: ...74 KX FT907BX B KX FT907BX W ...

Page 75: ...75 KX FT907BX B KX FT907BX W ...

Page 76: ...76 KX FT907BX B KX FT907BX W ...

Page 77: ...77 KX FT907BX B KX FT907BX W ...

Page 78: ...78 KX FT907BX B KX FT907BX W ...

Page 79: ...79 KX FT907BX B KX FT907BX W ...

Page 80: ...3 shown below which are special journals giving the additional detailed information about the latest 35 communications can be printed by Service Code 882 Remote printing function for the journal reports JOURNAL and JOURNAL 3 is also available for service technicians Refer to REMOTE PROGRAMMING P 47 The JOURNAL report only gives you basic information about a communication but the JOURNAL 3 report p...

Page 81: ...Means the unit detected DTMF Remote Fax activation code entered remotely 5 PAL DTMF Means the unit detected DTMF Remote Fax activation code entered by a parallel connected telephone 6 TURN ON Means the unit started to receive after 15 rings Remote Turn On Service Code 573 7 TIME OUT Means the unit started to receive after Ring Time Out in the EXT TAM or TEL FAX mode 8 IDENT Means the unit detected...

Page 82: ...tect with the naked eye are common particularly for an ASIC and RA Resistor Array But if you have an oscilloscope you can easily determine the problem site or IC malfunction by checking the main signal lines Even if you don t have such a measuring instrument by checking each main signal line and resoldering it in many cases the problem will be resolved An explanation of the main signals for bootin...

Page 83: ... be normal for the system to boot up are listed here List 1 For signal lines other than these even if they malfunction they do not directly affect booting up the system 7 5 8 1 DIGITAL BLOCK DIAGRAM 83 KX FT907BX B KX FT907BX W ...

Page 84: ...84 KX FT907BX B KX FT907BX W ...

Page 85: ... timing of these signals is even slightly delayed 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...

Page 86: ...Note Simply check the output level and make sure if the IC repeatedly outputs the signal at between 3 3V H and 0V L I O and Pin No Diagram 86 KX FT907BX B KX FT907BX W ...

Page 87: ...87 KX FT907BX B KX FT907BX W ...

Page 88: ... CPU initializes and checks each IC The ROM SRAM and Modem are checked If initialization fails for the ICs the system will not boot up CROSS REFERENCE NG EXAMPLE P 90 CHECK THE STATUS OF THE DIGITAL BOARD P 91 88 KX FT907BX B KX FT907BX W ...

Page 89: ...7 5 8 2 FLASH MEMORY IC6 If the unit is working correctly but the TAM fanction can not work you should check the Flash Memory 89 KX FT907BX B KX FT907BX W ...

Page 90: ...7 5 8 3 NG EXAMPLE 90 KX FT907BX B KX FT907BX W ...

Page 91: ...7 5 8 4 CHECK THE STATUS OF THE DIGITAL BOARD First please check voltages and oscillation whether they are correct as follows 91 KX FT907BX B KX FT907BX W ...

Page 92: ...92 KX FT907BX B KX FT907BX W ...

Page 93: ... is output in the telephone line In this route it is mainly an analog signal Tracing the signal can be done easily using an oscilloscope Each route is shown on the CHECK SHEET P 93 here If there is a problem with the unit for example you cannot communicate with the H S etc trace the signal in the area and determine the cause 7 5 9 1 CHECK SHEET Note Inside the digital board Inside the operation bo...

Page 94: ...Note Inside the digital board Inside the operation board 94 KX FT907BX B KX FT907BX W ...

Page 95: ...7 5 9 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 95 KX FT907BX B KX FT907BX W ...

Page 96: ...tanding 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 the secondar...

Page 97: ...2 Troubleshooting Flow Chart 97 KX FT907BX B KX FT907BX W ...

Page 98: ... 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 it with an el...

Page 99: ...7 5 11 OPERATION BOARD SECTION 7 5 11 1 NO KEY OPERATION CROSS REFERENCE TEST FUNCTIONS P 45 7 5 11 2 NO LCD INDICATION CROSS REFERENCE TEST FUNCTIONS P 45 99 KX FT907BX B KX FT907BX W ...

Page 100: ...SENSORS AND SWITCHES for the circuit descriptions 7 5 12 1 CHECK THE DOCUMENT SENSOR PS1 CHECK DOCUMENT 7 5 12 2 CHECK THE READ POSITION SW44 REMOVE DOCUMENT 7 5 13 READ SECTION Refer to SCANNING BLOCK P 117 100 KX FT907BX B KX FT907BX W ...

Page 101: ...CROSS REFERENCE TEST FUNCTIONS P 45 101 KX FT907BX B KX FT907BX W ...

Page 102: ...7 5 14 THERMAL HEAD SECTION Refer to THERMAL HEAD P 115 CROSS REFERENCE SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE P 112 THERMAL HEAD P 115 102 KX FT907BX B KX FT907BX W ...

Page 103: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 103 KX FT907BX B KX FT907BX W ...

Page 104: ...operations 3 Static RAM IC4 This memory is used mainly for the parameter working storage area 4 MODEM IC5 Modem for the FAX 5 Read Section Contact Image Sensor CIS to read transmitting documents 6 Thermal Head Contains heating elements for dot matrix image printing 7 Motor driver IC7 Drives the motor 8 Analog board Composed of an ITS circuit and NCU circuit 9 Sensor Section Composed of a document ...

Page 105: ...8 2 1 GENERAL BLOCK DIAGRAM 105 KX FT907BX B KX FT907BX W ...

Page 106: ...RT 32 256MHz MODEM 64kbit SRAM PRINTER CONTROL RTC TONE ASIC IC1 VOL A D IMAGE PROCESSING MOTOR I F MOTOR DRIVER IC7 RESET IC3 TO MOTOR T2 T5 256kbit ROM OP PANEL I F OSC 24MHz CPU 24V 24V 5V XRESETI XWDERR D0 7 A0 17 WR RD TO CIS TO THERMAL HEAD STB1 2 3 THLAT THCLK THDAT ANALOG SW Q11 FET LED ON CLK SIG THON 32 768kHz Q7 CIS ON KX FT907BX B W DIGITAL BOARD BLOCK DIAGRAM SP AMP IC12 CN9 106 KX FT...

Page 107: ...E DESCRIPTION 1 VSSA GND POWER SOURCE ANALOG GND 2 VDDA 3 3 3 3V POWER SOURCE ANALOG 3 3V 3 AIN1 A 3 3V CIS IMAGE SIGNAL INPUT SIG 4 AIN2 A 3 3V THERMISTOR TEMPERATURE WATCH INPUT 5 AIN3 A 3 3V LINE VOLTAGE DETECTION SIGNAL INPUT DCIN 6 AMON A 3 3V ANALOG SIGNAL MONITOR TERMINAL 7 VSS GND POWER SOURCE GND 8 X32OUT O 3 3V BATT RTC 32 768KHz CONNECTION 9 X32IN I 3 3V BATT RTC 32 768KHz CONNECTION 10...

Page 108: ...D 58 TEST3 I 3 3V HIGH FIXED 59 TEST4 I 3 3V HIGH FIXED 60 XMDMINT I 3 3V MODEM INTERRUPT 61 XMDMCS O 3 3V MODEM CHIP SELECT 62 XRAS IOP I O 3 3V PORT SPMUTE 63 XCAS1 IOP I 3 3V INPUT PORT PAPER 64 XCAS2 IOP I 3 3V INPUT PORT PDWN 65 XRESCS2 O 3 3V FLASH CHIP SELECT XRESCS2 66 DB3 I O 3 3V CPU DATA BUS 3 67 DB2 I O 3 3V CPU DATA BUS 2 68 DB4 I O 3 3V CPU DATA BUS 4 69 DB1 I O 3 3V CPU DATA BUS 1 7...

Page 109: ...XTHCLK 118 THLAT O 3 3V PULSE OUTPUT FOR DATA LATCH XTHLAT 119 STBNP I 3 3V INPUT PORT MOT POS 120 RM0 IOP O 3 3V MOTOR A PHASE 121 RM1 IOP O 3 3V MOTOR B PHASE 122 RM2 IOP O 3 3V MOTOR A PHASE 123 RM3 IOP O 3 3V MOTOR B PHASE 124 RXE IOP O 3 3V MOTOR ENABLE 125 TMO O 3 3V OUTPUT PORT THON 126 VDD 2 5V POWER SOURCE 2 5V 127 VSS GND POWER SOURCE GND 128 TM1 IOP O 3 3V OUTPUT PORT NC 129 TM2 IOP O 3...

Page 110: ...and addresses A000H to CFFFH are for the bank area 8 3 5 RESET CIRCUIT WATCH DOG TIMER The output signal reset from pin 4 of the voltage detect IC IC3 is input to the ASIC IC1 114 pin 1 During a momentary power interruption a negative reset pulse of 50 70 msec is generated and the system is reset completely 2 The watch dog timer built in the ASIC IC1 is initialized by the CPU about every 1 5 ms Wh...

Page 111: ...er is turned ON power is supplied to RAM IC4 and RTC IC1 At this time the voltage at pin 32 of RAM and pin 14 of RTC IC1 is 3 3V When the power is turned OFF the battery supplies the power to RAM and RTC through J1 R48 D3 At that time the voltage at pin 32 of RAM and pin 14 of IC1 are about 2 5V When the power is OFF and the 5V and 3 3V voltages decrease IC3 detects them and LOW is input to pin 11...

Page 112: ... point C according 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 IC1 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 print...

Page 113: ... data stored as above is input to the P S converter via routes 6 and 8 The white black data converted to serial data in the P S converter is input to the Thermal Head via route 9 and is printed out on recording paper Note Standard Reads 3 85 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 data stored in RAM of IC1 is output fro...

Page 114: ...8 4 2 BLOCK DIAGRAM 114 KX FT907BX B KX FT907BX W ...

Page 115: ... increment 1728 all the shift registers become filled with data and a latch pulse is emitted to each IC from IC1 pin 118 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 IC1 pins 103 105 only black dot locations 1 among latched data activates the driver and the current passes to heat the emitt...

Page 116: ...116 KX FT907BX B KX FT907BX W ...

Page 117: ...e transistor Q7 turns on This applies voltage to the LED array to light it and the voltage 3 3V of CIS turns on The contact image sensor is driven by each of the FTG F1 signals output from IC1 and the original image illuminated by the LED array undergoes photoelectric conversion to output an analog image signal The analog image signal is input to the system LSI IC1 on AIN1 pin 3 of IC1 and convert...

Page 118: ...N The motor coil is energized sequentially in 2 phase increments or 1 2 phase increments which causes a 1 step rotation A 1 step rotation is 0 13mm of recording paper or document paper The timing chart is below Stepping Motor Phase Pattern Function Mode Phase Pattern Speed Copy Fine Half Tone 1 2 432 pps Super Fine 1 2 216 pps FAX STD 2 432 pps Fine Half Tone 1 2 432 pps Super Fine 1 2 216 pps Pap...

Page 119: ...When the motor attached to the Drive Motor Gear rotates counterclockwise CCW Swing Gear A engages the CAM and the CAM turns counterclockwise to select a mode See Fig A There are three mode options controlled by the Switch A Transmit mode B Receive mode and C Copy mode In Fig B you can see which mode is selected by the position of the rib in the CAM 119 KX FT907BX B KX FT907BX W ...

Page 120: ...re feeding documents B Receive mode Swing Gear B engages G8 and conveys its drive power to the Platen Roller Gear for printing the received data C Copy mode Swing Gear A 1 and B engage Gears 6 and 8 respectively and drive both the Separation Roller Gear and the Platen Roller Gear for feeding documents and recording paper in the copying operation 8 4 6 3 MECHANICAL MOVEMENTS IN THE MAIN OPERATIONS ...

Page 121: ...8 4 6 3 2 SCANNING CROSS REFERENCE SENSOR SECTION P 100 8 4 6 3 3 PRINTING Note See SENSORS AND SWITCHES P 123 121 KX FT907BX B KX FT907BX W ...

Page 122: ...8 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 100 122 KX FT907BX B KX FT907BX W ...

Page 123: ...tch Name Message Error DIGITAL CN5 Motor Position CALL SERVICE 2 CN6 Cutter Position PAPER JAMED ANALOG SW1 Cover Open and Paper set CHECK COVER and OUT OF PAPER SW2 Hook SW SW3 JAM set PAPER JAMED Operation Panel SW44 Document Read Position REMOVE DOCUMENT PS1 Document set CHECK DOCUMENT 123 KX FT907BX B KX FT907BX W ...

Page 124: ...Pin Home position Low level Other High level 8 5 3 RECORDING PAPER SENSOR SW1 When there is no recording paper the plate is separated from the switch lever and the switch turns off Pin 63 of IC1 becomes a high level When there is recording paper the plate pushes the switch lever and the switch turns ON Pin 63 of IC1 becomes a low level Analog Board Signal CN1 63 Pin Paper Low level No paper High l...

Page 125: ... 8 5 5 JAM SENSOR SW3 The JAM sensor is a detection switch for determining whether the recording paper edge is in the correct position or not If the recording paper cannot be detected correctly at the JAM sensor position even when recording paper is present then JAM is displayed If the recording paper is at the sensor position then the switch turns on the IC1 21pin switches to a high level Analog ...

Page 126: ...ition Low level 8 5 7 DOCUMENT SET SENSOR PS1 When a document is set the shelter plate closes the sensor light the photo transistor becomes OFF and the input signal of the IC1 15 pin Operation becomes a high level When there is no document the shelter plate passes the sensor light the photo transistor becomes ON and the input signal of the IC1 15 pin Operation becomes a low level When checking thi...

Page 127: ... International Telecommunications Uniib ITU investigates and make recommendations on international standards for facsimiles 2 Definition of Each Group Group I G1 A 4 size documents without using formats which reduce the band width of a signal sent over telephone lines Determined in 1968 Transmission for about 6 minutes at scanning line density of 3 85 lines mm Group II G2 Using reduction technolog...

Page 128: ...ists 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 time This ...

Page 129: ...0 bps FSK are 1850 Hz 0 1650Hz 1 An example of the binary process in G3 communication is shown below Explanation of Signals Control signals are comprised mainly of 8 bit identification signals and of 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 receiv...

Page 130: ...ength of 303 mm 1 2048 picture elements along scan line length of 255 mm 1 Invalid 19 20 0 0 0 1 1 0 1 1 Maximum recording length capability A4 297 mm Unlimited A4 297 mm and B4 364 mm Invalid Maximum recording length A4 297 mm Unlimited B4 364 mm Invalid Signal DCS Digital Command Signal Identification Signal Format X1000001 Function Notifies the capacity of the receiving machine obtained at DIS ...

Page 131: ...eiving side at a speed 2400 to 9600 bps designated by DCS and the receiving side optimizes the automatic equalizer etc according 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 X010001...

Page 132: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 132 KX FT907BX B KX FT907BX W ...

Page 133: ...efer to CHECK SHEET P 93 2 Facsimile Reception The analog image data which is received from the telephone line passes through the NCU section and enters pin 60 of the modem IC5 The signals that enter pin 60 of the modem IC5 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 they are...

Page 134: ... RX ENB HOOK 5VD H S RX ENB MDM TX ENB TONE1 ENB Analog Digital LINE RX TONE1 VOLOUT ASIC IC1 VOLIN SPKRM SPKRP LINEOUT SIA IC5 2 0V MIC CN3 SP CN9 SP H S SP MIC IC2 IC10 Ref LINEIN MICM MICP 5VA 5V Q1 OP PANEL MIC 24V 12V 24V Ref SPKRM SPKRP LINEOUT PIA MICREF LINEIN MICM MICP 12V IC3 Line CN4 CPC BELL JAM JAM 5VD H S TX MUTE 2V RLY KX FT907BX B W ANALOG BOARD BLOCK DIAGRAM NC 134 KX FT907BX B KX...

Page 135: ...switches to the external telephone side Break and switches to the open side make when the unit starts facsimile communication IC1 130 High Level CN2 7 CN1 7 Q10 ON RLY1 make 8 8 3 BELL DETECTION CIRCUIT 1 Circuit Operation The signal waveform for each section is indicated below The signal low level section input to pin 23 of ASIC IC1 on the digital board is read TEL LINE PC2 1 2 4 CN1 11 CN2 11 IC...

Page 136: ...nal output from CN1 pin 5 passes through C29 R24 and R23 and enters the amplifier IC3 pin 3 This is used to cancel the return portion of the transmission signal This is the side tone circuit 8 8 6 CPC CALLING PARTY CONTROL DETECTION CIRCUIT 1 Function This circuit detects the signal cuts the current output from the converter when the other party finishes ICM recording and goes into the ON HOOK sta...

Page 137: ...from the handset 2 Signal path Refer to CHECK SHEET P 93 8 9 4 MONITOR CIRCUIT FOR EACH SIGNALS 1 Function This circuit monitors various tones such as 1 DTMF tone 2 Alarm Beep Key tone Bell 3 Dummy ring back tone 2 Signal path Refer to CHECK SHEET P 93 8 10 ATAS AUTOMATIC TELEPHONE ANSWERING SYSTEM SECTION 1 Function The ATAS main operation is performed by the special IC5 MODEM IC6 FLASH MEMORY s ...

Page 138: ...8 10 2 CIRCUIT DIAGRAM 138 KX FT907BX B KX FT907BX W ...

Page 139: ...C1 and ASIC IC1 on the DIGITAL BOARD The key matrix table is shown below IC1 ASIC DIGITAL BOARD OPERATION BOARD READ POSITION SENSOR DOCUMENT SENSOR CN7 CN1 Chip on board type GATE ARRAY IC1 CN2 7X5 KEYS MATRIX LED KSL0 4 XLED13 14 SW41 SW42 XLED11 12 XLED 15 LCD LED5 KIN0 KIN2 7 KX FT907BX B W OPERATION BOARD BLOCK DIAGRAM 139 KX FT907BX B KX FT907BX W ...

Page 140: ...data bus D4 D7 V0 is supplied for the crystal drive R13 and R14 are density control resistors Consequently in this unit the timing positive clock is generated by the LCD interface circuitry in the gate array IC1 Density Normal Dark LED1 IC1 22pin H L 140 KX FT907BX B KX FT907BX W ...

Page 141: ...ter 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 141 KX FT907BX B KX FT907BX W ...

Page 142: ...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 stabiliz...

Page 143: ...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 detecting ...

Page 144: ...9 REFERENCE MATERIAL DATA 9 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 144 KX FT907BX B KX FT907BX W ...

Page 145: ...See ABOUT LEAD FREE SOLDER PbF Pb free P 3 9 2 HOW TO REPLACE THE FLAT PACKAGE IC Even if you do not have the special tools for example a spot heater to remove the Flat IC with some solder large amount a soldering iron and a cutter knife you can easily remove the ICs that have more than 100 pins 9 2 1 PREPARATION 9 2 2 FLAT PACKAGE IC REMOVAL PROCEDURE 1 Put plenty of solder on the IC pins so that...

Page 146: ...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 9 2 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 146 KX FT907BX B KX FT907BX W ...

Page 147: ... procedures between the two types At the start of communication during the initial 2 3 correspondences the digital speakerphone performs half duplex operation alternating between transmission Tx and reception Rx Then duplex communication becomes available Learning occurs during the initial 2 3 correspondences in order to set the appropriate parameters for duplex communication You cannot check the ...

Page 148: ...Refer to ANALOG BOARD SECTION P 93 148 KX FT907BX B KX FT907BX W ...

Page 149: ...9 3 TEST CHART 9 3 1 ITU T No 1 TEST CHART 149 KX FT907BX B KX FT907BX W ...

Page 150: ...9 3 2 ITU T No 2 TEST CHART 150 KX FT907BX B KX FT907BX W ...

Page 151: ...10 FIXTURES AND TOOLS 151 KX FT907BX B KX FT907BX W ...

Page 152: ...11 CABINET MECHANICAL 11 1 OPERATION PANEL SECTION 152 KX FT907BX B KX FT907BX W ...

Page 153: ...11 2 UPPER CABINET SECTION 153 KX FT907BX B KX FT907BX W ...

Page 154: ...11 3 LOWER CABINET CROSS REFERENCE MOTOR SECTION P 155 154 KX FT907BX B KX FT907BX W ...

Page 155: ...11 4 MOTOR SECTION 155 KX FT907BX B KX FT907BX W ...

Page 156: ...11 5 ACTUAL SIZE OF SCREWS 156 KX FT907BX B KX FT907BX W ...

Page 157: ...12 ACCESSORIES AND PACKING MATERIALS 157 KX FT907BX B KX FT907BX W ...

Page 158: ...ATION RUBBER 14 PFUS1523Z SPRING DOCUMEN FEED 15 PFDG1170Z GEAR PLATEN POM HB 16 PFDN1044Z ROLLER PLATEN 17 PFUS1286Z SPRING OPERATION EARTH 18 PFJE1050Z LEAD WIRE 19 PQJM128Z BUILTIN MICROPHONE 20 WLK26YB04AA LEAD MIC B 21 WLK26YR04AA LEAD MIC R 22 PFDG1015Y GEAR DOCUMENT GUIDE POM HB 23 PFUS1222Z SPRING 24 PFKR1074Z1 DOCUMENT GUIDE R KX FT907BX B ABS HB 24 PFKR1074Z2 DOCUMENT GUIDE R KX FT907BX ...

Page 159: ...CHASSIS 13 1 5 ACCESSORIES AND PACKING MATERIALS Ref No Part No Part Name Description Remarks A1 PQJA10038Y POWER CORD A2 PQJA10075Z TEL CORD A3 PQJA10126X CURL CORD KX FT907BX B Ref No Part No Part Name Description Remarks A3 PQJA10126Z CURL CORD KX FT907BX W A4 PQUS1524Z PAPER STACKER A5 PQHP10023Z THERMAL RECORDING PAPER A6 PFJXE0801Z HANDSET KX FT907BX B A6 PFJXE0805Z HANDSET KX FT907BX W A7 P...

Page 160: ...EKF1101 1 1K R41 ERJ3EKF3602 36K R42 ERJ3GEYJ101 100 R44 ERJ3GEYJ101 100 Ref No Part No Part Name Description Remarks R46 ERJ3GEYJ334 330K R47 ERJ3GEYJ475 4 7M R48 ERJ3GEYJ222 2 2K R49 ERJ3GEYJ101 100 R50 ERJ3GEYJ101 100 R51 ERJ3GEYJ471 470 R52 ERJ3GEYJ101 100 R54 ERJ3GEYJ101 100 R57 ERJ3GEYJ102 1K R58 ERJ3GEY0R00 0 R59 ERJ3GEYJ470 47 R61 ERJ3GEYJ105 1M R62 ERJ3GEYJ104 100K R63 ERJ3GEYJ103 10K R64...

Page 161: ...01JCV 100P C105 ECUV1E104ZFV 0 1 C106 ECUV1E104ZFV 0 1 C107 ECUV1C333KBV 0 033 C108 ECUV1C104KBV 0 1 C109 ECEA1CKA100 10 S C110 ECEA1CKA100 10 S C111 ECUV1E104ZFV 0 1 C112 ECUV1H102KBV 0 001 C113 ECEA1CKA100 10 S Ref No Part No Part Name Description Remarks C115 ECUV1C104KBV 0 1 C116 ECUV1H331JCV 330P S C120 ECUV1E104ZFV 0 1 C123 ECEA1HKA4R7 4 7 S C126 ECUV1H102KBV 0 001 C127 ECUV1C104KBV 0 1 C129...

Page 162: ... 47K R66 ERJ3GEYJ220 22 R67 ERJ3GEYJ222 2 2K R68 ERDS2TJ221 220 S R70 ERJ3GEYJ152 1 5K R71 ERJ3GEYJ152 1 5K Ref No Part No Part Name Description Remarks R73 ERJ3GEYJ331 330 R79 ERJ3GEYJ680 68 R81 ERJ3GEYJ103 10K R84 ERJ3GEYJ105 1M CAPACITORS C1 ECUV1H103KBV 0 01 C2 ECUV1H103KBV 0 01 C4 ECEA1HKA4R7 4 7 S C5 ECUV1H103KBV 0 01 C6 ECEA0JKA470 47 S C7 ECUV1E104ZFV 0 1 C8 ECUV1H101JCV 100P C11 ECUV1C393...

Page 163: ...EY0R00 0 R45 ERJ3GEY0R00 0 R46 ERJ3GEY0R00 0 R47 ERJ3GEY0R00 0 R48 ERJ3GEY0R00 0 R49 ERJ3GEYJ101 100 R50 ERJ3GEYJ472 4 7K R51 ERJ3GEYJ101 100 R52 ERJ3GEYJ472 4 7K R53 ERJ8GEY0R00 0 S CAPACITORS C3 ECUV1E104ZFV 0 1 C5 ECEA0JKA221 220 S C7 ECUV1H331JCV 330P S Ref No Part No Part Name Description Remarks C8 ECUV1H121JCV 120P C9 ECUV1H331JCV 330P S C10 ECUV1H681JCV 680P S C11 ECUV1C104KBV 0 1 C12 ECUV...

Page 164: ...CKD3A102KBP 0 001 C109 PFCEA50YXA22 22 C110 PFKDEGA222M 0 0022 S C119 ECKD3A470KBP 47p C121 ECUV1H472KBV 0 0047 C122 ECUV1A224KBV 0 22 C123 ECUV1H103KBV 0 01 C124 ECUV1A474KBV 0 4 S C125 ECUV1H471JCV 470p C126 ECUV1H104KCV 0 1 C201 PFCEA35F471 470 S C202 ECKN3A102KBP 0 001 C203 PFCEA16A470 470 S C204 PFCEA35A47M 47 S C205 PFCEA50A1M 1 S 13 6 FIXTURES AND TOOLS Ref No Part No Part Name Description ...

Page 165: ...1 16 R113 IC4 IC1 C24 C25 C46 R51 R55 C36 R40 CLK FTG R65 R62 R76 C123 R107 C96 EYEXY EYESYNC 3 3V BATIN EYECLK R67 R66 R74 C57 R72 R64 R48 R104 C106 C105 C60 R121 5VA C104 C101 R108 R109 R105 R106 R96 R95 R94 R90 C91 C94 C95 C122 2 1 R119 C92 R99 R103 L12 7 CN8 D3 C110 C109 C125 1 R60 C53 C55 DG R41 R58 R56 C40 R45 R47 R46 C32 R54 C56 R63 SIG R115 R28 1 36 37 72 73 108 TEST X1 RA9 C97 C89 R98 16 ...

Page 166: ...129 C83 C77 L20 C16 C34 R36 C120 R17 R15 R14 R13 R12 R102 C98 R110 R91 C111 C90 C88 R100 C93 C71 C63 C43 C48 C41 C31 C28 C17 R5 R1 R3 C1 C7 C5 R6 C114 C27 C45 C42 R4 R2 C3 R8 R57 R43 C29 L2 R9 C54 C86 C74 C117 C76 R85 R111 R116 R117 R122 R123 C124 R120 C127 C126 R118 C121 8 5 1 4 IC12 C112 R112 R101 C85 C81 C107 C108 PFUP1393Z MODEM3 3V 3 3V BATIN 2 5V BATIN 2 5V 3 3V XTEST RESET PbF KX FT907BX B ...

Page 167: ...3 J2 J6 J10 J14 J11 J12 CN1 1 16 J5 J9 J19 FLT3 1 4 8 5 J7 J8 J16 PFUP1394Z UT J15 J31 J17 J18 J33 J29 J32 AUTO CH R83 D5 D4 R57 R85 R47 J21 J20 C30 C39 C10 C6 SW2 C62 CN3 C55 C58 C29 C15 C4 SW1 CN4 CN5 C48 T3 C50 C49 D12 D13 D6 D1 D15 D3 D14 D2 R43 E Q8 PC2 PC3 PC1 R28 R29 R68 PCB CH KX FT907BX B W ANALOG BOARD COMPONENT VIEW KX FT907BX B KX FT907BX W 167 ...

Page 168: ...R60 C74 R61 C43 4 1 8 5 R64 R56 C46 L15 R66 R65 C45 R49 C38 R45 C34 R37 R39 L13 L18 L12 C37 L10 C52 R63 R36 R35 R40 R46 C51 C40 R58 R34 R55 L24 C65 C26 R30 R32 R22 L1 C1 R5 R81 R38 C57 R79 L23 L30 L31 L28 L29 L11 C32 C41 L17 C63 L22 L25 R71 C61 C53 R54 R73 IC2 R51 R70 R27 C5 R7 R12 R67 DA1 R82 R80 L26 L27 R48 R14 C56 L32 L33 D16 PFUP1394Z UT PbF L21 L19 E Q4 E Q2 E Q5 E Q3 E Q6 E Q7 E Q9 16 1 PC2 ...

Page 169: ...J11 J12 J2 J16 J5 1 12 CN1 J15 J3 J4 J13 J14 No 1 No 12 SW10 No 2 No 13 SW20 No 3 No 14 SW6 No 4 No 15 SW16 No 5 No 16 SW15 No 6 No 17 SW39 No 9 No 20 SW9 No 8 No 19 SW7 No 7 No 18 ONE TOUCH DIAL STATION KEY CN2 1 10 SW8 SW42 LED1 No 10 RECEIVE MODE SW41 CALLER ID SW2 STOP SW5 C13 FAX START SET SW3 COPY PS1 No 21 SW37 No 11 No 22 SW1 LOWER SW19 UP VOL SW14 PREV SW38 NEXT SW4 DOWN VOL NAVIGATOR SW4...

Page 170: ...4 R48 R46 C20 IC1 23 22 12 11 1 44 34 33 C7 C9 C6 R45 R44 C3 GND R47 C8 R53 FG R3 C12 C11 R5 C10 R4 Q1 E BLACK MIC MIC R6 R7 R8 C16 C19 R17 C15 C23 R51 R52 R13 R15 R14 C17 R12 R10 R9 C14 SW44 C18 R25 R50 5V AG RED 1 2 3 4 5 6 7 8 9 A B C D E F G H I PbF PFUP1395Z UT KX FT907BX B KX FT907BX W 170 ...

Page 171: ...TINUED PROTECTION AGAINST RISK OF FIRE REPLACE KX FT907BX B W POWER SUPPLY BOARD COMPONENT VIEW 14 4 2 POWER SUPPLY BOARD BOTTOM VIEW PRIMARY SECONDARY T3 15AH 250V 68 4839A F101 D104 D103 D102 D101 J1 J2 J3 J4 C202 R224 D201 C102 C108 R104 R107 R109 R106 L103 D108 T101 C119 C221 C201 24 7 CN301 1 5V GND GND R203 R202 C203 C106 D105 C123 C125 C124 R127 R126 C121 R124 C105 R137 R103 R105 R128 R122 ...

Page 172: ...S 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 172 KX FT907BX B KX FT907BX W ...

Page 173: ...16 MEMO 173 KX FT907BX B KX FT907BX W ...

Page 174: ... 93 ADR10 94 ADR11 95 ADR12 96 RBA0 97 RBA1 98 RBA2 99 RBA3 100 RBA4 101 RBA5 OP 102 RBA6 IOP96 103 STB1 104 STB2 105 STB3 106 XRESET 107 VDD3 3V 108 VSS 109 VSS 110 VDD3 3V 111 XDRESET 112 VDD5 0V 113 VSS 114 XRESETI 115 XWDERR 116 THDAT 117 THCLK 118 THLAT 119 STBNP 120 RM0 IOP00 121 RM1 IOP01 122 RM2 IOP02 123 RM3 IOP03 124 RXE IP04 125 TM0 IOP10 126 VDD2 5V 127 VSS 128 TM1 IOP11 129 TM2 IOP12 ...

Page 175: ...1 RLSD 12 DCLK 13 EN85 14 GPI0 15 RTS 16 DGND1 17 TXD 18 SA1CLK 19 RS4 20 RS3 21 RS2 22 RS1 23 RS0 24 YCLK 25 IACLK 26 IA1CLK 27 CTRLSIN_S NC 28 RESERVED NC 29 SOUT_S NC 30 SIN_S NC 31 FSYNC_S NC 32 IARESET_S NC 33 AGND1 34 LINEIN_S NC 35 MICP_S NC 36 MICM_S NC 37 MICBIAS_S NC 38 NC 39 NC 40 VREF_S NC 41 VC_S NC 42 VAA_S NC 43 LINEOUT_S NC 44 NC 45 AGND2 46 SPKRP_S NC 47 SPKRM_S NC 48 AVDD_S NC 49...

Page 176: ...L3 0 L9 0 8 2K R30 R33 NC R2 10K R12 4 7K R3 100 R27 NC R8 10K 39K R22 R24 120K R21 220K R4 4 7K R15 2 2M 0 R5 R37 NC R40 0 R31 NC R11 120K R26 10K R7 100 R9 6 2K 470K R25 R28 220 1 4W R20 220K R39 NC R29 0 R23 5 1K 33K R16 R14 1 6K 15K R35 R6 4 7K R38 NC R1 100 R18 75K R13 75K R10 150K 1K R34 82K R17 6 8K R32 D3 5 6V D2 5 6V D1 4 7V Q1 Q6 NC Q2 Q3 Q5 NC Q4 NC SW2 1 2 3 4 T1 NC 1 2 3 4 6 T2 1 2 3 ...

Page 177: ...3 0 L33 BEAD L31 0 L25 BEAD L23 BEAD L21 NC L14 0 L17 0 L18 0 L27 NC JJ2 0 JJ3 0 R57 15K 1 2W R70 1 5K 22 R66 R67 2 2K 18K R61 R47 22K 1 2W R55 330 R59 NC R63 10K R44 6 2K R52 120 2W R51 2 2K R54 560K R56 220K R64 10K 43K R36 R46 NC R43 NC R65 47K 2 2K R45 R48 NC R71 1 5K 750K R49 330 R73 R53 NC R68 220 1 4W D12 D6 NC D14 D13 D7 NC 1 2 3 4 D4 3 0V D5 3 0V 0 F1 POS1 SA2 3000V SA1 350V ZNR1 NC Q8 NC...

Page 178: ...OWER SW2 STOP SW3 COPY SW4 DOWN VOL SW5 FAX START SET SW6 No 4 No 15 SW7 No 7 No 18 SW8 No 10 No 21 SW9 No 8 No 19 SW10 No 2 No 13 SW11 RECORD SW12 PLAY SW13 MENU SW14 PREV SW15 No 6 No 17 SW16 No 5 No 16 SW17 ERASE SW18 SP PHONE MONITOR SW19 UP VOL SW20 No 3 No 14 SW21 8 SW22 5 SW23 REDIAL PAUSE SW24 2 SW25 0 SW26 9 SW27 6 SW28 MUTE SW29 3 SW30 SW31 7 SW32 4 SW33 FLASH SW34 1 SW35 SW36 No 1 No 12...

Page 179: ...ND R127 PC101 C124 0 47 10 1 8K C101 0 22 F101 T3 15A 250V D101 R105 0 22 2 C121 4700p C125 470p 4 5 3 6 2 7 1 8 R122 270 D107 R 125 IC101 D108 R108 15 IC202 R128 100 D106 Q101 G R104 R107 150K 2 T101 TRANS D201 1 24V 2 24V 3 24V 4 GND CN301 5 GND 6 GND 7 5V C202 1000p 1K D202 C206 C110 C221 2200p R223 IC201 C205 1 50 100 D S R203 47 1 2 C204 47 35 TH101 R124 180 C126 0 1 50 Cycle 15 4 µs 55V 25V ...

Page 180: ...180 KX FT907BX B KX FT907BX W Y M KXFT907BXB KXFT907BXW ...

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