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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
IC DESCRIPTION IC, µPD178018AGF/IC, µPD178006AGC-539-3B9
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Pin Name AM/FM S-M LEVEL-M A-VOL CONT CD CONNECT CD DISP SEL CD CLO CD DI CD DO CD CLI LCD CE DFP LAMP LCD DI LCD DO LCD CLO CD ACC CONT POWER MUTE ST-BY MUTE POWER CONT CONT 1 CONT 2 GND VDD MUTE BAND CONT RADIO CONT RDS MODE IF REQ AM IF FM IF VDD FM OSC AM OSC GND EO 0 EO 1 GND LOC/DX ST IND/SD IN PHONE MUTE I/O I I I I O O I O I O O I/O O O O O O O O O � � O O O O O I I � I I � O O � O I I Description AF signal input during RDS AF operation and FM S meter signal input Level meter signal input Detects microphone input for auto volume operation.Pulled down when not used. CD changer connection check. Pulled down when not used. Determines the timing with which data is transferred to the head unit.Open when not used. Clock output to CD changer. Open when not used. Data input from CD changer. Pulled down when not used. Data output to CD changer. Open when not used. Clock input from CD changer. Open when not used. LCD DRV (LC75854W) CE output. Outputs "H" only when FLAP IN (pin 67) is "L".Open when not used. LCD DRV (LC75854W) data input. Open when not used. LCD DRV (LC75854W) data output. LCD DRV (µIPD16432B) clock output. LCD DRV (LC75854W) clock output. Transmits the power on/off status of head unit to changer. Open when not used. Muting output to power amp Standby/muting output to power amp Unit power control output LCD DRV power control 1 LCD DRV power control 2 Ground for port Power supply for port Audio muting output AM/FM power switching output. AM:�H�, FM: �L�. Radio ON/OFF. Power switching output. Radio ON: �H�. Outputs "H" during RDS AF operation. Open when not used. Output to request IF count signal. AM IF count signal input FM IF count signal input Power supply for PLL FM local oscillation input AM local oscillation input Ground for PLL Error output from charge pump (for FM) Error output from charge pump (for AM) Ground LOC/DX switching output during radio seek (LOC: "H", DX: "L"). Open when not used. Stop pulse input during FM/AM seek. Muting control input -20 dB. Mute: �L�.
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