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Very helpfull information and I highly recommend this source for needed information about your products.
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More than pleased with my prurchase, very good product for the price.
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This is a good quality scan of the service manual which includes an assembly diagram, block diagram, schematic, and parts list. Exactly what is needed to repair my KR-V55R receiver.
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Excellent concise manual. All needed information was included. Typeface and diagrams were clear. Very fair price considering what others are charging. Many thanks
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Response is a little slow- I had to wait 12 hours to receive download link but it says that it may take up to 24hrs.
Manual is old and was not produced in PDF- scanned copy is exellent.
Overall- value for money- I recommend
KDC-9020R/MP919/PSW9521/X759
MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)
Pin 74 75 76 77 78 79 Avdd Avss Avref PHONE E2PROMDET MASK-SW1 Name I/O I I I I Purpose Positive power supply terminal. GND terminal. A/D converter reference voltage supply terminal. Phone detection terminal. E2PROM detection terminal. Mask mechanism position detection. Mask mechanism position detection. Mask mechanism position detection. Mask mechanism detection. FM noise detection terminal. S-meter detection terminal. RDS decoder DATA input terminal. RDS decoder OUAL input terminal. F/E IFC OUT input terminal. Muting request from CH. Request output to CH. RDS decoder CLK input terminal. Request input from CH. Communication request from Panel uCOM. Loading SW detection terminal. 12 cm disc detection SW terminal. Processing Operation Processing During Processing During Non-Operation STBY
. TEL muting: 1 V or less NAVI muting: 2.5 V or more. E2PROM present: "H". E2PROM absent: "L". Refer to the 01MASK mechanism position detection chart Refer to the 01MASK mechanism position detection chart Refer to the 01MASK mechanism position detection chart Mechanism present: "L". Mechanism absent: "H".
80
MASK-SW2
I
81 82 83 84 85 86 87 88 89 90 91 92
MASK-SW3 MASK-DET NOISE S-METER R-DATA R-QUAL IFC-OUT CH-MUTE CH-REQH R-CLK CH-REQC SC-REQ
I I I I I I I I O I I I
Models without RDS and RBDS: Connected to GND. Models without RDS and RBDS: Connected to GND. Station detected: 2.5 V or more. Request: "L". H Models without RDS and RBDS: Connected to GND. Requested: "L". H
93
CD-SW1
I
94 95 96 97 98 99
CD-SW2 N.C N.C CH-DATAC CH-DATAH CH-CLK
I O O
Loading start: "L". Take care that the logic in power OFF is different from Flip. 12 cm disc: "L". Take care that the logic in power OFF is different from Flip. L L
100 SC-DATA
10
Output Open. Not used. Output Open. Not used. DATA input terminal I from CH. DATA output terminal O to CH. CLK input/terminal I/O from/to CH. DATA line from I Panel uCOM.
Last state held.
L Hi-Z Hi-Z
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