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Service Manual
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
SP-MXGT91R
Contents
Safety precautions
Important for laser products
Preventing static electricity
Disassembly method
Adjustment method
MX-GT91R
STANDBY/ON
STANDBY
CD-R / RW PLAYBACK
MX-GT91R
CA-MXGT91R
1-2
1-4
1-5
1-6
1-26
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
PLAY & EXCHANGE
SP-MXGT91R
Flow of functional operation
until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
MX-GT91R
Area Suffix
B
U.K.
E
Continental Europe
EN
Northern Europe
1-30
1-31
1-31
1-32
No.20931
Apr. 2001
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Summary of Contents for JVC MX-GT91R
- Page 1 MX-GT91R SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-GT91R Area Suffix U.K. Continental Europe Northern Europe STANDBY/ON PLAY & EXCHANGE STANDBY CD-R / RW PLAYBACK MX-GT91R SP-MXGT91R CA-MXGT91R SP-MXGT91R Contents Safety precautions Flow of functional operation Important for laser products until TOC read...
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Page 2: Block Diagram
MX-GT91R Block diagram FMH- FMH-031-2 FMB-028-5 FMA-006 FMC-022/024-1 031-1 MAIN MAIN HPF FM FRONTEND FM/DET TUNER RELAY SOURCE SELECTOR MAIN POWER AMP MUTE SYSTEM AM/DET & E.VOL IC602 IC481 IC 1 IC436 TAPE VOLDA,VOKCK HARMONICS MW RF/OSC INPUT AMP SUB WOOFER... -
Page 3: Standard Schematic Diagrams
MX-GT91R Standard schematic diagrams Power supply section 0.33( 1/2W) 0.33( 1/2W) 0.33( 1/2W) R1002 R1002 R1002 SHEET 4/8 C252 T001 CN220 T001 0.0047/250 F001 T001 QQT0320-002 QGD2504C1-03Z QQT0320-001 QQT0320-003 CN220 F001 CN220 QGD2504C1-03Z QGD2504C1-03Z T2AL CN214 QJK015-071214 CN214 QJK015-071214 5A-125V... - Page 4 MX-GT91R DC regulation & audio output section CN705 QGA2501C1-02 IC602 IC701 R786 KTC3200/GL/-T R675 C621 Q711 D726 1SS133 10/35V C605 C606 C705 C706 R778 220P R798 220P R740 220P 220P D703 D704 Q713 Q737 2SC2235/OY/-T D622 KRA111M-T R736 Q736 Q612 4.7K...
- Page 5 MX-GT91R Main section SHEET 4/8 SHEET 4/8 R998 CN870 CN871 QGF1205C1-17 QGF1205C1-17 J426 R997 GP1FA550TZ R995 R426 C427 D426 D.OUT Q999 10/25 C426 KRA102M-T MTZJ5.1B-T2 0.022 RECL C994 C1228 C401 R401 100/6.3 220P RECR 470P 220P C402 C888 0.022 D434...
- Page 6 MX-GT91R FL & systm control section FW915 QUM027-18Z4Z4 S999 FL801 R970 S996 QLF0074-001 GPIU271X CD1LED IC951 S995 CD2LED CD3LED C836 10/25 S997 L-115XSRD-D-T R961 D962 L806 C817 22/50 QQR0779-001Z S998 QQL29BJ-100Z L805 C815 R998 S964 L815 QQL29BJ-100Z 22/50 CN911 L802...
- Page 7 MX-GT91R Front section IC901 NJM4580L FW915 QUM027-18Z4Z4 C1068 0.22/50 S915 D1061 R1063 R1068 1SS133-T2 S916 R1062 C1066 Q919 Q920 Q918 330P R1069 S917 Q1061 2SD2144S/VW/-T 102P C1021 J1021 QNS0184-001 MTZJ2.4B-T2 D1022 QUM027-13DGZ4 R1021 FW901 4.7k JS901 QSW0911-001 S901 J1022 QNS0184-001...
- Page 8 MX-GT91R CD serbo section CN805 R887 CAM0 R886 CAM1 R871 R885 CAM2 R872 R884 CAM3 IC851 IC852 R873 LB1641 LB1641 R876 R883 CAM4 R882 CAM5 R875 R881 CAM6 R874 R880 CAM7 R281 R280 CN855 L853 QGB2012K2-10 L851 R855 R856 C859...
- Page 9 MX-GT91R Head amplifier section SHEET 3/8 SHEET 4/8 TAPE P.B. signal Parts are safety assurance parts. When replacing those parts make SHEET 7/8 sure to use the specified one.
- Page 10 MX-GT91R Tuner section QAU0160-001 0.0039 0.47/50 0.0022 0.047 22/16 0.27 470P 1/50 0.047 22/16 10/16 0.001 10/16 1SS133-T2 100/10 1000P 1SS133-T2 0.0018 0.0018 3.3K QAX0420-001 LC72136N 1SS133-T2 LA1838 2SC2412K/R/-X 2SC2412K/R/-X 1SS133-T2 QNB0014-001 DTA114YKA-X QAX0458-001Z 5.6K 150P DTA114YKA-X QQR0793-001 150P 150P 1/50 1.2K...