Canon LV-S4 Service Manual Download Page 37 | Manualshive

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Chassis Block Diagrams

14-15

18-19

16-17

SER

VICE

POR

T

KEY

SWITTCH

R/C

RECEIVER

LED-On:

H

R/C BO

ARD

CONTR

OL BO

ARD

AV

BO

ARD

SENSOR BO

ARD

MAIN BO

ARD

IC1801

OUTPUT

EXPANDER

IC1871

COMPARATOR

OPTION RESIST

ORS

K8E

12

1

16

13

15

14

K8G

K68B

45,46

174

182

From the power fail

detection diodes.

IC5201

SELECT

OR

IC101

VIDEO

DECODER

IC401

COLOR

CORRECT

IC501,IC531,IC561

LCD DRIVER

IC5303

IC5001

IC401

IC1821

IC501,IC531,IC561

IC9401

IC5631

IC5003

Q101

K50B

Q6201

IC401

IC501

IC531

IC561

IC5621

IC501,IC531,IC561

IC1841

EEPROM

IC4801

NAND

IC8801

TEMP.

SENSOR

IC8802

TEMP.

SENSOR

IC8821

TEMP

.

SENSOR

M_SCL2/SD

A2

Q1843 Q1844

44,116

M_SCL1/SD

A1

P_SCL2/SD

A2

P_SCL1/SD

A1

Q1841 Q1842

173

47,181

140

1

2

178

71

201

141

72

K10E

K50B

RESET

SW

K8H

K88A

P_F

AIL

17-19

12

FAN_SW

ON_3.3V

IC1802

OUTPUT

EXPANDER

19

TURBO_ST

IRM_RS

17

12

13

SH_RGB_ST

14-16

R_V1/V2

B_V1/V2

G_V1/V2

FIL

T_480P

VO

L

IC3551

DAC

5

S/CV_SW

6

15

PC/A

V_SW

14

13

CG_FIL

T

4

CBAL_SW

IC3561

DAC

4-6

15

14

16

2-4

5

6

7

8

3,5

1

13 14 15

19

17-18

K8811

K48L

K68C

Alw

a

ys A

v

ailab

le

Alw

a

ys A

v

ailab

le

Standb

y off

Standb

y off

PO

WER

LAMP_REP

W

ARNING

IC1811

BUFFER

3

2

SCLK/SD

AT

A_PW

IC1882

LAMP CPU

IC1881

INVERTER

DIMMER

ON/OFF

LAMP_DET

FA

N

CONTR

O

L

PO

W_ON

IC9401

TURBO

UNIT_PO

WER

CN202

K8A

3

4

5

2

UNIT_LAMP B

ALLAST

CN300

K48K

1

5

4

SW BO

ARD

LAMP CO

VER SW

SW8801

1-2 3-4

56,127

117,180

SCLK/SD

AT

A

6

5

IC1821

B

UFFER

IC8201

A/D

IC3571

DAC

IC5302

YUV_SYNC

4

7

4

3

1

6

4

2

9

11

1

6

IC361

OR GA

TE

5

3

IC801

FLASH

IC1861

INVER

TER

P_SCL1/SD

A1

ERR

OR :

L

ERR

OR :

L

Lamp-ON :

H

Po

w

er-ON :

H

ERR

O

R :

Open

Lamp-ON :

L

Lamp Dimmer Control

L = Lo

w beam.

H = High Beam

Mute-ON :

H

3.3V to 5V

3.3V to 5V

red

yellow

green

red

R_C

PO

WER

LAMP_REP

W

ARNING

KEY01-03

READ

Y

MUTE

D0 - D15

A1 - A21

NMI

WR/RD

5V_SW

MONIT

OR_SW

MUTE_A

V

ON_15V

RXD/TXD

KEY11-13

LAMP_ERR

9

MUTE_SW

OPTION2

OPTION3

OPTION1

ERROR :

H

IC351

B

UFFER

IC9801

RS232C DRIVER

RECEIVER

CPU_RESET

MUTE_A

V

MONIT

OR_SW

MUTE_SW

RXD1/TXD1

FIL

T_480P

FAN_CONT3

FAN_CONT2

FAN_CONT1

17

FAN_CONT4

REF_R/G/B

LAMP_PO

W

FAN_ERR

LAMP_PWM

IC301

MAIN CPU

ERR

OR :

H

TXL

SCEL

RXL

Q5007, IC1811

Q2501

K50B

K50B

Q3582,Q5622

●

System Controls

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Summary of Contents for LV-S4

Page 1: ...Multimedia Projector SERVICE MANUAL Original Version FILE NO Model No LV S4 ...

Page 2: ...39 No Picture 40 No Sound 41 Control Port Functions 42 Waveforms 46 Cleaning 47 IC Block Diagrams 48 2 Contents Drawings Diagrams A1 A10 Parts description and reading in schematic diagram A2 Schematic diagrams A3 A6 Printed wiring board diagrams A7 A8 Pins description of ICs transistors diodes A9 NOTE The different points between the previous model LV S3 and the new model LV S4 as follows The elec...

Page 3: ...ore replacing the cabinet cover thoroughly inspect the inside of the cabinet to see that no stray parts or tools have been left inside Before returning any projector to the customer the service personnel must be sure it is completely safe to operate without danger of electric shock SERVICE PERSONNEL WARNING Eye damage may result from directly viewing the light produced by the Lamp used in this equ...

Page 4: ... Image Size Diagonal Adjustable from 34 to 200 Projection Lens F 1 6 1 8 lens with f 18 3 mm 21 9 mm with manual zoom and focus Throw Distance 4 3 21 3 1 3m 6 5m Projection Lamp 160W UHP Lamp Interface Video Input Jack RCA Type x 1 Audio Input Jack Mini Jack Stereo x 1 Monitor Out Terminal VGA HDB15 Terminal X 1 Computer S Video Component Input Terminal VGA HDB15 Terminal X 1 Service Port Connecto...

Page 5: ...e the cabinet top following to Mechanical Disassemblies 2 Press the reset button on the thermal switch with a sharp pointed tool CAUTION Before press the reset button make sure that the AC cord must be disconnected from the AC outlet This projector provides the following circuit protections to operate in safety If the abnormality occurs inside the pro jector it will automatically turn off by opera...

Page 6: ...ult in internal heat build up and adversely affect the life of the projector To clean up the air filters follow the cleaning procedure below 1 Turn off the projector and disconnect the AC power cord from the AC outlet 2 Turn the projector upside down and remove the air fil ters by pulling the latches upward 3 Clean the air filters with a brush or rinse them softly 4 When cleaning the air filters b...

Page 7: ...button The message Lamp replace counter reset is displayed Move the pointer to Yes and then press the OK button 3 Another confirmation dialog box appears and select Yes to reset Lamp Replace Counter Please refer to the owners manual for further informa tion Recommendation Should the air filter become clogged with dust particles it will reduce the cooling fan s effectiveness and may result in inter...

Page 8: ...wing steps show the basic procedures therefore unnecessary step may be ignored Caution The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of performance and product safety Fig 1 Cabinet Top removal 1 Screws Expression Type Diameter x Length mm T type M Type B B A B A Air filter Panel net_side Cabinet Top AT FIRST REMOVE THE AIR FILTER Follow...

Page 9: ...Board Cabinet Front Speaker SP901 D D 1 Remove 2 screws A M3x6 and 2 screws B M3x6 to take the Cabinet Front off 2 Remove 1 screw C T3x6 to the R C Board on the Cabinet Front 3 Remove 2 screws D T3x6 to take the Speaker SP901 off Cabinet Front R C Board and Speaker removal 2 NOTE About the connection around the Main Board refer to Page 15 ...

Page 10: ...ermal SW Lamp Cover Spacer Fig 4 1 Take the Rear Panel ass y upward off and remove 1 screw A M4x4 2 Remove 2 screws B T3x8 to take the fan FN903 off 3 Remove 4 screws C T3x8 and take AV Board from the Rear Panel ass y off Rear Panel AV Board and FN903 removal 4 A B C B C C C AV Board Rear Panel FN903 Thermal SW Cover A Thermal SW Cover B ...

Page 11: ...Holder by pulling it 4 Remove 3 screws E T3x6 to take the Power Unit off Notes You can remove the connectors on the Power Unit after the Lamp Ballast Unit removal Fig 7 Power Unit and FN901 removal 7 A A A A B E E E D C Spacer Sheet Power Board FN901 Holder Fig 6 1 Remove 2 screws A M3x10 and take the Lamp Cable off 2 Remove 6 screws B T3x10 and take the Optical Unit upward off Optical Unit remova...

Page 12: ... Ass y FN906 Fig 8 1 Remove 1 screw A M4x4 to take the Earth cable off 2 Remove 2 screws B T3x8 to take the Lamp Ballast Unit and the Filter Board off 3 Remove 2 screws C T3x6 to take the Lamp Ballast Unit off 4 Remove 3 screws D T3x6 to take the Filter Board off Lamp Ballast Unit and Filter Board removal 8 A B B C C D D D Lamp ballast Board Holder Filter Board Spacer Sheet Spacer Sheet Shield Pla...

Page 13: ... Cover SW removal 11 FN904 SW Board Earth Plate Duct B B C C 1 Remove 1 screw A T3x8 to take the Duct under the Panel 2 Remove 1 screw B T3x8 to take the Holder with the Fans FN902 and FN905 off 3 Remove 2 screws C T3x10 to take the Fans FN902 and FN905 off 4 Remove 1 screw D T3x8 to take the Sensor Board off Fig 10 FN902 FN905 and Sensor Board removal 10 A B C C D Sensor Board FN902 FN905 Shield ...

Page 14: ... V Board Main Board FN902 Intake Fan FN905 Intake Fan FN906 Exhaust Fan FN901 Intake Fan Filter Board Unit_Lamp Ballast Unit_Power Sensor Board R C A Board Control Board Switch Board Speaker SP901 Optical Lamp LP900 Electrical Parts Location Following information differs from the model LV S3 the cabinet the control board ...

Page 15: ...68D SENSOR K88A CONTROL K68B K66F K66D K48L K8B K50A K50B SOLDER_SIDE BLUE RED RED POWER CN201 FN906 SW K8811 FN901 MAIN SIDE A MAIN SIDE B NOTE The connector BLUE from FN904 should be connected to K66C WHITE The connector WHITE from FN906 should be connected to K66D BLUE Connection around the Main Board Following information differs from the model LV S3 the connection of FN904 and FN906 ...

Page 16: ...ssemblies 16 Fig 2 Fig 1 1 Remove 2 screws to take the Lamp Holder off Lamp Holder removal 1 1 Remove 3 screws to take the Projection Lens ass y off Projection Lens Ass y removal 2 Optical Unit Box Lamp Holder Optical Unit Box Projection Lens and Panel Prism Ass y Following information differs from the model LV S3 the lamp holder removal ...

Page 17: ...zed Glass In removal 3 1 Remove 6 screws to take the Optical unit top off Optical Unit Top removal 4 Optical Unit Box Optical Unit Base Polarized glass_Red Polarized glass _Green and Blue Polarized glass sticked on Condenser lens R Polarized glass with mounting holder Fig 3 2 R B G Screw Polarized glass_Red Polarized glass_Blue Polarized glass_Green Screw Screw Optical Parts Disassemblies ...

Page 18: ...lens ass y downward off 2 Remove 2 screws B M2x4 and take the Relay lens ass y downward off A A A B B Relay lens ass y Condenser lens ass y Condenser lens Ass y and Relay lens Ass y removal 5 Following information differs from the model LV S3 the optical disassemblies on page 18 19 ...

Page 19: ...his surface side and top side Dichroic mirror LCD panel LCD panel LCD panel Glass should be placed as the film attached side comes LCD panel side Film attached side Film attached side Film attached side Polarized glass Plate Polarized glass Condenser lens R Plate and Polarized glass are not overlapping Printed marker comes top side Condenser lens The printed marker comes this side ...

Page 20: ...rror R 10 Relay lens OUT 11 Assy Condenser lens R 12 Condenser lens G 13 Condenser lens B 14 Mirror B 15 Polarized glass IN G 16 Polarized glass IN B 17 Assy LCD PNL Prism Key No Description 12 Following information differs from the model LV S3 added items No 15 17 When the optical parts in the optical unit mounting or assembling the parts must be mounted in the specified location and direction as...

Page 21: ...ment Check the White Balance Adjustment and Common Centre Adjustment following to chapter Electrical Adjustment Check the white uniformity on the screen If you find the color shading please adjust the white uniformity by using the proper computer and Color Shading Correction software supplied separately Zoom Lever 1 Remove 4 screws to take the Projection Lens off LCD Panel Prism Ass y removal 1 Pr...

Page 22: ...destal adjustment PC gain adjustment Video gain adjustment 480p pedestal adjustment 480p gain adjustment 480i gain adjustment Gamma adjustment PC and AV Common center adjustment White balance adjustment PC and AV Disassembly Replaced Parts LCD Prism Ass y Optical Unit Polarized glass R G B Optical Adjustments Electrical Adjustments Power Board Main Board Note The polarized glass R is sticked on th...

Page 23: ... on the main board because the projector can not turn on due to operate the power failure protection Fig 1 1 Polarized glass mounting base A Before Adjustment Input a 100 of black raster signal R G B CONTRAST ADJUSTMENT 1 Loosen a screw A Fig 1 1 1 2 on the polarized glass mounting base which you intend to adjust 2 Turn the polarized glass mounting base as shown in Fig 1 1 to obtain the darkest br...

Page 24: ... make color uniformity in green by using a slot screwdriver 2 If the shading appears on the top or bottom of the screen as shown in Fig 2 2 loosen 2 screws C with the 2 0mm hex driv er and adjust the slot D to make color uniformity in green by using a slot screwdriver 3 Tighten screws A and C to fix the Condenser lens unit Note The relay lens adjustment must be carried out after completing this ad...

Page 25: ...lot B to make color uniformity in white by using a slot screwdriver 2 If the cyan bar appears on the top or bottom of the screen as shown in Fig 4 2 loosen 2 screws C with the 2 0mm hex driver and adjust the slot D to make color uniformity in white by using a slot screwdriver 3 Tighten the screws A and C to fix the relay lens unit Fig 4 1 A Slot B b a a Moving of slot B b White Fig 4 2 Slot D Movi...

Page 26: ...ta of lamp replacement monitor timer is stored in the IC1841 Please note that the lamp replace counter is reset when the memory IC IC1841 is replaced Lamp replace counter can not be set to the previous value Caution to memory IC replacement When IC1841 is replaced with new one the CPU writes down the default data of the service adjustments to the replaced IC refer to the service adjustment table A...

Page 27: ...16 steps gray scale pattern SVGA Component Video signal 0 7Vp p 75Ω terminated 16 steps gray scale white 100 and black 0 pat tern 480i format and 480p format Picture control mode STANDARD mode unless otherwise noted Note Please refer to Service Adjustment Menu Operation for entering to the service mode and adjusting the service data Please carry out the adjustments at TPG1 B1 R1 in order as G B R ...

Page 28: ...ite Level 1 Receive the 16 step gray scale composite video sig nal with Video Video mode 2 Enter the service mode 3 Connect an oscilloscope to test point TPG1 and chassis ground 4 Select item no 7 and change data value to adjust waveform a to be minimum amplitude 5 Connect an oscilloscope to test point TPR1 and chassis ground 6 Select item no 8 and change data value to adjust waveform a to be mini...

Page 29: ...o mode 5 Select item no 16 and change data value to make the reading of luminance meter to be B x 23 Note If the Luminance meter is not equipped you can take another method instead as follows PC GAMMA ADJUSTMENT 1 Receive the 16 step gray scale computer signal with COMPUTER IN RGB mode 2 Enter the service mode 3 Select item no 16 If the black or white saturated picture can be seen adjust the data ...

Page 30: ...hading Correction Setting R1 L3E7070K0A 2 Vertical Line Color Shading Correction 38 V Line Color Shading Correction Setting R2 L3E7070K0A 1 39 V Line Color Shading Correction Setting R3 L3E7070K0A 254 40 V Line Color Shading Correction Setting G1 L3E7070K0A 2 41 V Line Color Shading Correction Setting G2 L3E7070K0A 1 42 V Line Color Shading Correction Setting G3 L3E7070K0A 254 43 V Line Color Shad...

Page 31: ... Low Up Eco 48 10 100 109 Temp B High Down Normal 44 10 100 110 Temp B High Down Eco 48 10 100 111 Manual Fan 1 Voltage 207 40 210 112 Manual Fan 2 Voltage 201 40 210 113 Manual Fan 3 Voltage 205 40 210 114 Manual Fan 4 Voltage 174 40 210 115 Temp Error Cooling Time 3 0 15 0 N A 1 30sec 2 60sec 15 450sec 116 Cooling Time L1 3 1 15 1 30sec 2 60sec 15 450sec 117 Cooling Time L2 4 1 15 1 30sec 2 60se...

Page 32: ... Progressive OFF 299 Position Horizontal 60Hz PIXEL N A 514 N A 300 Position Vertical 60Hz PIXEL N A 384 N A 301 Expand Ratio Vertical 50Hz PIXEL N A 5 302 Expand Ratio Horizontal 50Hz PIXEL N A 24 303 Position Horizontal 50Hz PIXEL N A 519 304 Position Vertical 50Hz PIXEL N A 383 305 Expand Ratio Vertical 480i PIXEL N A 1 N A For Component 480i mode 306 Expand Ratio Horizontal 480i PIXEL N A 17 N...

Page 33: ...tal 480i PIXEL N A 17 N A Progressive ON 359 Position Horizontal 480i PIXEL N A 514 N A 360 Position Vertical 480i PIXEL N A 383 N A 361 Expand ratio Vertical 575i PIXEL N A 5 N A For Component 575i mode 362 Expand Ratio Horizontal 575i PIXEL N A 24 N A Progressive ON 363 Position Horizontal 575i PIXEL N A 519 N A 364 Position Vertical 575i PIXEL N A 383 N A 365 Expand ratio Vertical SCART PIXEL 5...

Page 34: ...TEGFBK TPVVS IC101 K8W TE301 K8V K8G 1AA4B10C4340A K8A IC301 K25G K8F K25B TPRESET TPG1 TPDVS K25R TPDHS K8E IC3561 IC3551 TPB1 IC3571 IC501 K66A K66B IC401 IC531 TEGND2 K8H IC561 TPR1 TP2561 IC9401 TPVHS IC8201 TPG1 TPB1 TPR1 Electrical Adjustments MAIN BOARD Test Points and Locations ...

Page 35: ...2 YUV_SYNC IC1881 INVERTER IC1882 LAMP CPU FANS LED POWER FAIL SYSTEM BUS IIC BUS VIDEO RGB YUV IC5201 RGB SELECTOR IC301 MAIN CPU OSD SCAN CONVERTER IC401 COLOR CORRECTION IC501 B PANEL DRIVER IC531 G PANEL DRIVER IC561 R PANEL DRIVER D SUB_15 D SUB_15 UNIT_LAMP BALLAST SW BOARD CONT BOARD SENSOR BOARD R C BOARD LAMP COVER SW IC1801 EXPANDER IC1802 EXPANDER IC3551 DAC IC3561 DAC IC3571 DAC Y Cb C...

Page 36: ... GVS IIC_2 IIC_1 VHS VVS VPEN VFIELD VCLK VHDREN IC5303 IC1002 PC AV_SW FILT_480p 575p GVS GHS DR DG DB ROUT GOUT BOUT RO DHS DVS DCLK TPR1 SCLK SDATA IC3561 DAC M62398 IC3571 DAC M62398 IC3551 DAC M62393 IC1003 VIDEO SW AD8075 BO GO IIC_2 IIC_2 IIC_1 TPG1 TPB1 REF_R G B R G B_V1 V2 CBAL_SW 14 5 15 4 6 14 19 FILT_480p 575p MONITOR_SW IIC_2 H H V V 3 26 13 11 5 9 6 8 16 28 3 11 2 12 TPGHS TPGVS TP6...

Page 37: ... DAC 4 6 15 14 16 2 4 5 6 7 8 3 5 1 13 14 15 19 17 18 K8811 K48L K68C Always Available Always Available Standby off Standby off POWER LAMP_REP WARNING IC1811 BUFFER 3 2 SCLK SDATA_PW IC1882 LAMP CPU IC1881 INVERTER DIMMER ON OFF LAMP_DET FAN CONTROL POW_ON IC9401 TURBO UNIT_POWER CN202 K8A 3 4 5 2 UNIT_LAMP BALLAST CN300 K48K 1 5 4 SW BOARD LAMP COVER SW SW8801 1 2 3 4 56 127 117 180 SCLK SDATA 6 ...

Page 38: ... 5V ON_3 3V FAN_CONT1 FAN_CONT2 FAN_CONT3 FAN_CONT4 IC1802 EXPANDER IC3561 DAC IC1882 LAMP CONTROL IC1881 INVERTER PC303 PC501 PC300 5V LAMP_POW LAMP_PWM FAN_ERR IC4801 NAND 5 1 4 3 CN300 15VB 375V IGNITOR ON_15V K48L K8811 SW8801 K48K MAIN BOARD Power Fail L Power Fail L Fan Error L Stand by L PWM Lamp On H Power On H BLUE LCD PANEL GREEN LCD PANEL RED LCD PANEL 15VP Q5622 5V_SW 15 5V_FAN IC5621 ...

Page 39: ... from pin 12 of IC1802 and sent to IC5631 then 3 3V line is supplied 5V_SW signal Power on H is output from pin 71 of IC301 and sent to Q3582 then 5VA line is supplied ON_15V signal Power on H is output from pin 72 of IC301 and sent to Q2501 then 15VL line is supplied When the WARNING red and POWER red indicators are flashing the symptom indicates that the projec tor detected an abnormal temperatu...

Page 40: ...ge Check composite video signal Video on the AV and Main board Check IC101 and peripheral circuit No picture with video input source Yes Check PC source selecting stage Check RGB signals at pin 3 2 and 1 of IC101 RGB Scart signals are sent to IC101 Video decoder IC Check CV_SCART signal and test points TPVHS TPVVS CV_SCART signal for sync is sent to pin 72 of IC101 Check AV source selecting stage ...

Page 41: ... control IC IC5002 audio pre amp IC and peripheral circuit Check the control voltage on pin 2 and 6 of IC5001 L minimum volume H maximum volume Is the audio signal observed at pins 1 and 7 of IC5002 Check Audio amp and control circuit Check IC5003 audio amp IC and peripheral circuit MUTE signal Mute L is applied on pin 4 of IC5003 sent from pin 12 of IC1801 When the mini jack plug is connected to ...

Page 42: ...nder Chip Select Output O 55 Port F2 CS1 I O Expander Chip Select Input O 207 Port F1 DCLKEXT D port Clock External Input Not used I 257 Port F0 MCLKEXT Memory System Clock Input Not used I 194 A19 A19 Address Bus 19 63 A19 A18 Address Bus 18 132 A17 A17 Address Bus 17 62 A16 A16 Address Bus 16 61 A15 A15 Address Bus 15 131 A14 A14 Address Bus 14 193 A13 A13 Address Bus 13 247 A12 A12 Address Bus ...

Page 43: ... DAC Lower Reference Voltage input 11 VrefU1 DAC Upper Reference Voltage input CH5 CH8 12 Vss GND 13 VrefU2 DAC Upper Reference Voltage input CH1 CH 4 14 A01 FAN_CONT3 FN901 FN903 O 15 A02 FAN_CONT2 FN906 O 16 A03 FAN_CONT1 FN902 FN905 O 17 A04 FAN_CONT4 FN904 O 18 A05 Not used O 19 A06 Not used O 20 Vcc Power Supply for Output Buffer 12V 21 Vdd Power Supply 5V 22 CS2 Slave address setting port 2 ...

Page 44: ...A03 G_V1 Video signal reference voltage G O 17 A04 G_V2 Video signal reference voltage G O 18 A05 B_V1 Video signal reference voltage B O 19 A06 B_V2 Video signal reference voltage B O 20 Vcc Power Supply for Output Buffer 12V 21 Vdd Power Supply 5V 22 CS2 Slave address setting port 2 Vdd I 23 CS1 Slave address setting port 1 Vdd I 24 CS0 Slave address setting port 0 GND I Pin No Name Function I O...

Page 45: ...r FAN O 20 Vdd Power Supply 3 3V Pin No Name Function I O Output Expander IC1802 TC74LCX574FT Port Functions 1 OE1 IO_ENB 1 CS1 Enable L OE1 and OE2 I 2 A1 K11 KEY Scan Input I 3 A2 K12 KEY Scan Input I 4 A3 K13 KEY Scan Input I 5 A4 OPTION1 Option Resistor 1 I 6 A5 OPTION2 Option Resistor 2 I 7 A6 OPTION3 Option Resistor 3 I 8 A7 LAMP_ERR Lamp Error Input I 9 A8 MUTE SW SP MUTE H I 10 GND GND 11 ...

Page 46: ... 46 Waveforms VIDEO IN TP103 IC101 75 Analog H SYNC TPGHS Analog V SYNC TPGVS Digital H SYNC TPDHS Digital V SYNC TPDVS NRS TP2531 TP2561 R S H OUT TPR1 G S H OUT TPG1 B S H OUT TPB1 ...

Page 47: ...by air spray disassemble and clean the optical unit Disassembly Cleaning Disassembly cleaning method should only be per formed when the unit is considerable dirty and cannot be sufficiently cleaned by air spraying alone Be sure to readjust the optical system after per forming disassembly cleaning 1 Remove the cabinet top and main units following to Mechanical Disassemblies 2 Remove the optical bas...

Page 48: ...KST Analog Flat Panel Interface IC8201 RAIN ROUTA GAIN GOUTA BAIN BOUTA MIDSCV SYNC PROCESSING AND CLOCK GENERATION HSYNC COAST CLAMP FILT DTACK HSOUT VSOUT SOGOUT REF REF BYPASS SERIAL REGISTER AND POWER MANAGEMENT SCL SDA A0 AD9883A CLAMP 8 A D CLAMP 8 A D CLAMP 8 A D ...

Page 49: ... 49 BA9743AFV DC DC Converter IC371 IC Block Diagrams BA7078AF Sync Detector IC5301 ...

Page 50: ... 50 IC Block Diagrams LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...

Page 51: ... 51 VPC3230D Video Decoder IC101 IC Block Diagrams TA1370FG Sync Separator Frequency Counter IC5302 ...

Page 52: ...SERVICE MANUAL LV S4U LV S4E ...

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