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Sony XT-991V, Service Manual

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Sony XT-991V Service Manual Download Page 5

5

FRONT  FRAME,  CHASSIS (UPPER)

B  BOARD

1

screw
(B2.6 

×

 4)

4

front frame

Note: Do not pull the front 

frame by force,
or it gets damaged.

1

screw
(B2.6 

×

 4)

5

boss

1

screw
(B2.6 

×

 4)

2

car mount bracket

1

screw
(B2.6 

×

 4)

1

screw
(B2.6 

×

 4)

6

chassis (upper)

1

screw
(B2.6 

×

 4)

3

five claws

1

screw
(B2.6 

×

 4)

2

car mount 
bracket

5

boss

1

Pull the front panel ass’y.

2

four screws
(B2.6 

×

 4)

2

screw
(B2.6 

×

 4)

4

binding 
band

5

connection cords
(CN701, 702, 703)

6

B board

3

two flat cables (L) 26P
(CN705, 706)

Note: When removing the flat 

cable (L) 26P, pull out 
the front panel 
but do not raise the B board 
by force.

Summary of Contents for XT-991V

Page 1: ...50 180 7 mm w h d Operating temperature 5 C 45 C Mass Approx 2 kg TV Tuner unit XT 991V Television system CCIR I D K system Color system TV PAL Video PAL NTSC Channel converge VHF 1 CH 12 CH UHF 21 CH 69 CH Power requirements 12 V DC car battery negative ground Current drain Approx 0 5 A Output terminals Video output RCA pin 1 Vp p 75 ohm Audio output RCA pin 10 dBs 10 kohm Monitor output Square 1...

Page 2: ...s SENSOR MOTOR Section 25 6 12 Schematic Diagram SENSOR MOTOR Section 25 6 13 Printed Wiring Board G Board 26 6 14 Schematic Diagram G Board 27 6 15 Printed Wiring Board PANEL Board 28 6 16 Schematic Diagram PANEL Board 29 6 17 IC Pin Function Description 34 7 EXPLODED VIEWS 36 8 ELECTRICAL PARTS LIST 40 Notes on chip component replacement Never reuse a disconnected chip component Notice that the ...

Page 3: ...de gear phase has been finely adjusted Therefore never remove those screws shown in the figure when making repairs HOW TO PULL UP THE MONITOR BY HANDS AT POWER OFF 1 Draw out the front panel fully in the direction of the arrow 1 and remove the shaft stopper from the monitor 2 Push the slider knob L and slider R in the direction of ar row 2 Meshing of gear slide L monitor gear L and gear slide R mo...

Page 4: ...MOTOR SMALL TYPE SLIDE M21 PAGE 7 FRONT FRAME CHASSIS UPPER PAGE 5 FRONT PANEL SECTION SECTION 2 DISASSEMBLY Note Follow the disassembly procedure in the numerical order given 3 boss 2 two screws M2 3 1 A 5 claw 4 Remove the front panel section in the direction of arrow A 2 two screws M2 3 3 boss 6 flat cable 26P CN701 This set can be disassembled in the order shown below Note Be sure to read the ...

Page 5: ...cket 1 screw B2 6 4 1 screw B2 6 4 6 chassis upper 1 screw B2 6 4 3 five claws 1 screw B2 6 4 2 car mount bracket 5 boss 1 Pull the front panel ass y 2 four screws B2 6 4 2 screw B2 6 4 4 binding band 5 connection cords CN701 702 703 6 B board 3 two flat cables L 26P CN705 706 Note When removing the flat cable L 26P pull out the front panel but do not raise the B board by force ...

Page 6: ...tion of arrow B 1 Pull the monitor base ass y in the direction of arrow A 2 Push the slider knob L in the direction of arrow B 1 two screws M2 3 2 Open this side as there are screws that fix the side plate 1 six screws M2 3 3 Remove the cover in the direction of arrow A 1 two screws M2 3 A S102 Note When removing or mounting the cover take care not to allow the cover to be stuck to the S102 screw ...

Page 7: ...2 two connectors CN106 108 8 two screws M2 3 Note When installing these screws and DC motor apply a drop of screw lock G 1401B 0 bracket monitor motor 9 DC motor small type slide M21 1 screw M2 3 2 bracket monitor stopper 5 screw M2 3 6 D board 7 motor gear slide 3 screw M2 3 4 Remove the bracket monitor motor in the direction of the arrow Part Name Part No SCREW LOCK G 7 432 114 11 1401B ...

Page 8: ...7 Push the slider knob R in the direction of arrow A 4 C board 3 screw M2 3 2 connector CN11 2 four screws M2 3 1 connector CN108 4 two screws M2 3 3 motor gear monitor 6 bracket monitor motor 5 DC motor small type angle M11 B Note When installing these screws and DC motor apply a drop of screw lock G 1401B Part Name Part No SCREW LOCK G 7 432 114 11 1401B ...

Page 9: ...hassis bottom without a slack as shown in the figfure base ass y 1 Pull the base ass y in the direction of arrow A A 0 Pull the flat cable L 26P in the direction of arrow B and stick it to the sheet FFC with an adhesive tape DC motor small type slide M21 B adhesive tape sheet FFC qs screw M2 3 qa FFC cover 1 0 Pull the flat cable L 26P in the direction of arrow C and stick it to the sheet FFC with...

Page 10: ...tate if no operation is performed during this time When the test mode is activated perform the following operation imme diately Monitor position initializing Return the position and angle at the time of monitor open state to the initial position set in the factory 1 Immediately after the Test mode is activated press the SEARCH button and TV VIDEO button A beep will sound 2 Press the RESET button a...

Page 11: ...s 5 35 V Inverter Standard Frequency Adjustment Connection Adjustment Procedure 1 Connect a frequency counter to the CL299 on the A board 2 Adjust RV502 on the A board so that frequency counter read ing is 115 2 kHz Adjustment Location digital voltmeter A board TP1 5 35 V RV501 5 35 V Adjustment RV502 INVERTER STANDARD FREQUENCY Adjustment TP1 5 35 V CN401 A BOARD Side A A board CL299 frequency co...

Page 12: ...C cord TV tuner unit XT 991V NTSC pattern generator MONITOR OUT jack INPUT 1 VIDEO jack TV monitor XVM 75V regulated DC power supply DC 14 4 V ACC cord Connection cord parking brake terminal Connected to ground VIDEO OUT 75 Ω white black 0 74 Vp p V COM Amplitude Bias Adjustment Adjustment Procedure 1 Display the gray scale on the monitor screen 2 Connect an oscilloscope to TP COM on the G board 3...

Page 13: ...1 2 V GND B Sub Bright Adjustment Adjustment Procedure 1 Display the gray scale on the monitor screen 2 Connect a oscilloscope to TP B on the G board 3 Adjust RV404 so that the third step from the bottom becomes 1 2 V Note After all adjustments finished enter connect the PAL pattern generator to check that a picture appears 1 2 V GND RV401 V COM AMPLITUDE Adjustment RV404 B SUB BRIGHT Adjustment R...

Page 14: ...14 MEMO ...

Page 15: ...GP GEN RV408 GAMMA 2 GAMMA AMP BIN GIN ROUT BOUT COMOUT COMAMP GOUT KO 0 KO 3 KI 0 KI 3 SDA SCL S MUTE W MODE 1 W MODE 2 SYNC OUT SYNC IN GAMMA 2 29 31 5 6 1 2 3 1 6 7 51 POWER SW 32 SIRCS SDAI SDAO 23 24 X0 X1 SCL 54 REM SEL 64 5 PICTURE OFF IN 19 XRESET 20 7 10 38 37 26 42 41 INV AMP 40 RV407 GAMMA 0 GAMMA 0 27 RV405 BRIGHT BRIGHT 29 RV403 R SUB BRIGHT RV404 B SUB BRIGHT RV406 RGB AMPLITUDE RV40...

Page 16: ...VEL SHIFT Q11 DT1 33 30 17 AD BAT 9 PARKING 49 16 7 3 VCC IN1 RV502 9 6 POWER CONTROL IC503 OUT PRE DRIVE Q502 503 DC DC CONVERTER DRIVE Q504 ERROR AMP PWM COMPARATOR OSC OUTPUT CIRCUIT 1 4 VCC IN 5 35V RV501 2 42 43 44 60 61 46 47 48 62 63 S31 PUSH OUT ON When the monitor base is pushed out S102 MONITOR CLOSE DETECT S11 MONITOR OPEN DETECT ANGLE MOTOR DRIVE IC112 9V D121 OUT1 M11 ANGLE OUT2 V MO ...

Page 17: ...50 WV or less are not indicated except for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified C panel designation U B Line V B Line H adjustment for repair Power voltage is dc 14 4V and fed with regulated dc power supply from ACC and BATT cords Voltages and waveforms are dc with respect to ground in color bar signal input Voltages are taken with aVOM In...

Page 18: ...RINTED WIRING BOARD B Board See page 17 for Circuit Boards Location Semiconductor Location Side B Ref No Location D702 A 4 D703 B 5 D704 B 3 D705 B 3 D706 B 4 D708 B 7 IC703 A 7 Q701 A 3 XT 991V R799 R798 Page 20 Page 20 ...

Page 19: ...19 19 XTL 75V 6 5 SCHEMATIC DIAGRAM B Board Page 22 Page 22 ...

Page 20: ... 9 D111 D 1 D508 E 9 D510 F 11 IC101 B 8 IC102 D 2 IC103 H 2 IC104 B 9 IC105 A 11 IC106 E 3 IC107 H 1 IC108 H 2 IC110 F 2 IC111 E 3 IC112 F 9 IC113 C 3 IC501 E 11 IC503 C 11 Q105 D 3 Q106 F 8 Q110 C 7 Q502 C 9 Q503 C 9 Q504 C 9 Q510 E 10 Q511 D 10 Q512 F 10 Q514 E 9 Q516 D 6 Q517 D 6 Page 28 Page 26 Page 25 Page 25 Page 25 Page 18 Page 18 ...

Page 21: ...n Semiconductor Location Ref No Location D001 E 2 D107 E 2 D108 I 2 D110 H 2 D112 G 3 D117 B 7 D118 D 3 D119 F 8 D121 F 8 D122 C 3 D123 C 3 D124 F 9 D125 F 9 D126 G 1 D130 C 1 D131 H 2 D503 E 8 D504 D 7 D506 E 8 D507 E 7 Q102 H 4 Q108 F 8 Q109 B 8 Q112 B 9 Q113 B 10 Q114 B 8 Q506 D 9 Q515 E 10 ...

Page 22: ...22 22 XTL 75V 6 8 SCHEMATIC DIAGRAM A Board 1 3 See page 31 for IC Block Diagrams Page 19 Page 19 Page 24 Page 23 ...

Page 23: ...23 23 XTL 75V 6 9 SCHEMATIC DIAGRAM A Board 2 3 See page 30 for Waveform See page 31 for IC Block Diagrams Page 22 Page 29 Page 27 Page 24 Page 25 Page 25 Page 25 ...

Page 24: ...24 24 XTL 75V 6 10 SCHEMATIC DIAGRAM A Board 3 3 See page 30 for Waveforms See page 31 for IC Block Diagrams Page 22 Page 23 ...

Page 25: ...25 25 XTL 75V 6 11 PRINTED WIRING BOARDS SENSOR MOTOR Section See page 17 for Circuit Boards Location 6 12 SCHEMATIC DIAGRAM SENSOR MOTOR Section Page 20 Page 20 Page 20 Page 23 Page 23 Page 23 ...

Page 26: ...26 26 XTL 75V 6 13 PRINTED WIRING BOARD G Board See page 17 for IC Circuit Boards Location Page 20 ...

Page 27: ...27 27 XTL 75V 6 14 SCHEMATIC DIAGRAM G Board See page 30 for IC Waveforms See page 31 for IC Block Diagram Page 23 ...

Page 28: ...age 17 for IC Circuit Boards Location D701 D 3 D702 D 3 D703 D 3 D704 D 4 D706 D 4 D710 D 4 D711 B 5 D716 D 2 D717 E 5 D718 A 7 D719 A 7 D720 E 3 D721 B 2 D722 A 2 D723 B 1 D724 B 3 D725 B 3 D727 E 6 IC701 B 4 Q701 D 4 Q702 E 4 Q703 D 5 Q704 E 5 Q708 E 4 Q709 E 4 Q710 E 4 Q711 E 3 Q712 E 6 Page 20 ...

Page 29: ...29 29 XTL 75V 6 16 SCHEMATIC DIAGRAM PANEL Board Page 23 ...

Page 30: ... Collector 3 9 Vp p 100 ns H 5 0 Vp p H 4 9 Vp p H 960 mVp p H 1 0 Vp p H 1 0 Vp p H 1 0 Vp p 26 2 Vp p 19 4 µs 19 6 µs 4 7 Vp p 11 5 Vp p 11 5 µs 42 8 Vp p 11 6 µs 13 Vp p 8 6 µs 4 IC501 7 OUT 3 Q504 Collector 2 IC503 1 OUT Q503 Base 9 Q912 Base 0 Q912 Collecter 19 2 µs 4 6 Vp p qa Q403 404 Emitter qs Q401 Emitter Q403 Base 6 0 Vp p 128 µs 6 0 Vp p 128 µs 26 Vp p 19 µs ...

Page 31: ... OUTPUT CIRCUIT 2 5V REGULATOR START UP 1 235V REFERENCE CURRENT SOURCE BIAS ON OFF IC111 BR24C01AF E2 1 2 3 4 5 6 7 8 LOGIC DOUT ACK X DEC DATA REGISTER SERIAL MUX EEPROM ADDRESS COUNTER DATA WORD LOGIC CONTROL SERIAL LOGIC STOP START H V PUMP TIMING Y DEC DOUT R W DIN INC LOAD EN VCC TEST SCL SDA NC NC NC GND IC112 113 BA6285FP E2 DRIVER DRIVER NC NC NC GND OUT2 RNF FIN VCC OUT1 5 6 16 VM 15 NC ...

Page 32: ...16 REF OUT UVK NON INV INPUT2 INV INPUT2 12 FEED BACK2 11 DEAD TIME CONTROL2 10 OUT2 9 VCC CT RT NON INV INPUT1 INV INPUT1 FEED BACK1 DEAD TIME CONTROL1 OUT1 GND 1 2 3 4 5 6 7 8 REFERENCE VOLTAGE S C P COMPARATOR 1 SWITCH ON AT H PWM COMPARATOR S C P COMPARATOR 2 DEAD TIME COMPARATOR S C P LATCH OSC U V L O ERROR AMP 5 6 7 8 1 2 3 4 OUT VCC FEED BACK INPUT SCP DEAD TIME CONTROL RT GND ...

Page 33: ...COMP COMP MATRIX INT EXT SW γ AMP γ AMP INV INV VREF DEMOD R Y G Y B Y SYNC IN Y C Y C BGP F F Y R Y G Y B Y PAL ON P N N P CHROMA OUT ACC FILTER B Y R Y KILLER FILTER BURST OUT COLOR C IN IDENT FILTER VIDEO IN CONTRAST TRAP PICTURE AGC OUT AGC FILTER CLAMP F ADJ VCC1 G IN R IN B IN SW COMMON OUT COMMON AMPLITUDE ADJUST SYNC SEP SYNC OUT SYNC IN FRP SUB BRIGHT R SUB BRIGHT B BRIGHT GAMMA 0 GAMMA 2...

Page 34: ... Not used open 19 PICTURE OFF IN I Picture off control signal input from the TV tuner unit 20 XRESET I System reset signal input from the TV tuner unit reset signal generator IC108 and reset switch S702 L reset L is input for several 100 msec after power on then it changes to H 21 MOD 0 I Setting terminal for the CPU operational mode fixed at H in this set 22 MOD 1 I Setting terminal for the CPU o...

Page 35: ... LED A G O Selection signal output of the LED illumination L amber H green 53 LED BRIGHT O LED drive signal output of the SEARCH SEARCH ANGLE SLIDE OFF DSPL SELECT V ADJ VOLUME D721 to 725 LSW704 706 709 to 717 indicators L LED on 54 SIRCS O Sircs remote control signal input from the remote control receiver IC701 55 MASTER I Control signal input terminal Not used open 56 AV SW I Control signal inp...

Page 36: ...s Example KNOB BALANCE WHITE RED Parts Color Cabinet s Color Ref No Part No Description Remark Ref No Part No Description Remark 9 10 9 9 12 11 9 10 9 9 9 8 1 7 1 6 5 13 1 14 1 2 1 1 1 3 4 Front panel section F704 1 4 931 871 01 SCREW M2X3 2 1 670 608 12 C BOARD 3 3 027 951 02 KNOB L SLIDER 4 3 027 946 01 PLATE SIDE 5 3 032 376 01 SHEET COPPER LEAF 6 3 027 948 01 COVER 7 3 027 957 11 FRAME FRONT 8...

Page 37: ... 587 01 BRACKET MONITOR STOPPER 64 3 027 962 01 CUSHION MONITOR STOPPER 65 1 670 610 12 E BOARD 66 3 027 964 01 SHEET FFC 67 A 3317 279 A A BOARD COMPLETE 68 3 941 545 01 SCREW M2X4 P 69 3 027 960 01 COVER 1 FFC 70 3 027 961 01 COVER 2 FFC 71 1 783 614 11 CABLE FLAT 26P 72 A 3317 281 A B BOARD COMPLETE 73 3 655 653 01 BAND TAITON BINDING 74 7 621 773 86 SCREW B 2 6X4 75 1 790 173 12 CORD CONNECTIO...

Page 38: ... PANEL 108 9 881 993 01 OPEN CLOSE KEY 109 9 881 992 01 NAVI TV VIDEO KEY 110 9 881 994 01 VOL KEY 111 9 881 995 01 DISPLAY KEY 112 9 882 003 01 RESET KEY 113 9 881 997 01 OFF KEY 114 9 881 996 01 ANGLE SLIDE KEY 115 9 881 998 01 V ADJ KEY 116 3 018 974 01 SCREW 2X5 117 9 882 029 01 PANEL BOARD COMPLETE 118 9 882 045 01 REFLECTION BOARD B 119 9 882 027 11 REFLECTION BOARD A 120 9 882 028 01 BLIND ...

Page 39: ...PANEL LIQUID CRYSTAL 156 3 030 472 01 SHEET BLACK 157 3 027 952 01 PROTECTOR FFC 158 3 027 919 01 FRAME MONITOR 159 3 033 105 01 SHEET L BLACK 160 3 713 790 21 SCREW M2X6 TAPPING P3 161 3 016 188 01 SCREW 2 6X5 162 3 027 941 01 PLATE MONITOR FIXED 163 A 3317 076 A G BOARD COMPLETE 164 1 783 613 11 CABLE FLAT 26P 165 3 027 940 02 CABINET MONITOR REAR 166 3 027 938 02 GEAR L MONITOR 167 3 032 813 01...

Page 40: ...CT 47uF 20 16V C150 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C151 1 115 340 11 CERAMIC CHIP 0 22uF 10 25V C152 1 164 299 11 CERAMIC CHIP 0 22uF 10 25V C201 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C202 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C210 1 107 889 11 ELECT 220uF 20 25V C439 1 126 155 11 ELECT 100uF 20 6 3V C440 1 128 078 11 ELECT 33uF 20 25V C441 1 128 078 11 ELECT 33uF 20 25V C501 1 164 00...

Page 41: ...UCTOR 150uH L201 1 412 032 11 INDUCTOR CHIP 100uH L407 1 412 031 11 INDUCTOR CHIP 47uH L408 1 412 031 11 INDUCTOR CHIP 47uH L409 1 412 031 11 INDUCTOR CHIP 47uH L501 1 415 929 21 INDUCTOR 100uH L502 1 411 736 21 INDUCTOR 22uH L503 1 412 032 11 INDUCTOR CHIP 100uH L504 1 412 032 11 INDUCTOR CHIP 100uH L505 1 412 032 11 INDUCTOR CHIP 100uH L506 1 412 032 11 INDUCTOR CHIP 100uH L507 1 414 862 11 INDU...

Page 42: ...AL CHIP 220 5 1 10W R194 1 216 033 00 METAL CHIP 220 5 1 10W R195 1 216 033 00 METAL CHIP 220 5 1 10W R196 1 216 033 00 METAL CHIP 220 5 1 10W R197 1 216 170 00 RES CHIP 68 5 1 8W R198 1 216 170 00 RES CHIP 68 5 1 8W R199 1 216 065 00 RES CHIP 4 7K 5 1 10W R200 1 216 065 00 RES CHIP 4 7K 5 1 10W R201 1 216 065 00 RES CHIP 4 7K 5 1 10W R202 1 216 065 00 RES CHIP 4 7K 5 1 10W R203 1 216 295 00 SHORT...

Page 43: ...17 DIODE FTZ6 8E T148 D704 8 719 066 17 DIODE FTZ6 8E T148 D705 8 719 066 17 DIODE FTZ6 8E T148 D706 8 719 066 17 DIODE FTZ6 8E T148 D708 8 719 420 51 DIODE MA729 TX IC IC703 8 759 711 58 IC NJM78L05UA COIL L701 1 421 961 41 INDUCTOR 450uH L702 1 416 510 21 INDUCTOR 100uH TRANSISTOR Q701 8 729 027 43 TRANSISTOR DTC114EK T146 RESISTOR R701 1 216 089 00 RES CHIP 47K 5 1 10W R702 1 216 089 00 RES CHI...

Page 44: ...47uF 20 10V C437 1 104 823 11 TANTALUM CHIP 47uF 20 16V C442 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C443 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C444 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C923 1 135 179 21 TANTALUM CHIP 2 2uF 20 16V C924 1 127 746 21 FILM CHIP 0 082uF 10 100V C926 1 107 526 11 CERAMIC CHIP 22PF 10 3KV C927 1 107 526 11 CERAMIC CHIP 22PF 10 3KV CONNECTOR CN901 1 569 629 11 HOUSIN...

Page 45: ... C704 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C705 1 104 913 11 TANTALUM CHIP 10uF 20 16V C706 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V CONNECTOR CN701 1 573 366 21 FFC CONNECTOR 26P DIODE D701 9 882 025 01 DIODE NNCD6 8G T1 D702 9 882 025 01 DIODE NNCD6 8G T1 D703 9 882 025 01 DIODE NNCD6 8G T1 D704 9 882 025 01 DIODE NNCD6 8G T1 D706 9 882 026 01 DIODE PTZ TE25 5 6B D710 9 882 600 01 DIODE NNCD6 ...

Page 46: ...81 00 METAL CHIP 22K 5 1 10W R737 1 216 184 00 METAL CHIP 270 5 1 8W R738 1 216 184 00 METAL CHIP 270 5 1 8W R739 1 216 295 00 METAL CHIP 0 5 1 10W R740 1 216 295 00 METAL CHIP 0 5 1 10W R741 1 216 042 00 METAL CHIP 510 5 1 10W R742 1 216 042 00 METAL CHIP 510 5 1 10W R743 1 216 042 00 METAL CHIP 510 5 1 10W R744 1 216 042 00 METAL CHIP 510 5 1 10W R745 1 216 042 00 METAL CHIP 510 5 1 10W R746 1 2...

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