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There are currently no product reviews.
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OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
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Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
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Thanks God for the internet and thanks for the service like this - proffessional solution on time.
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About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
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The downloaded quality was as good as the orignial
IC BLOCK DIAGRAM
IC, KS57C0301
P0.0 /CLO P0.1 /TIO P0.2 /INT1 RESET BASIC TIMER INERRUPT CONTROL BLOCK WATCH TIMER INTERNAL INTERRUPTS P2.0-P2.3 P3.0 /SCK P3.1 /SO P3.2 /SI P3.3 /BUZ I/O PORT 2 I/O PORT 3 ARITHMETIC LOGIC UNIT FLAGS SERIAL I/O PORT P1.0 /KS0 /CIN0 P1.1 /KS1 /CIN1 P1.2 /KS2 /CIN2 P1.3 /KS3 /CIN3 I/O PORT 1 INSTRUCTION DECODER CLOCK STACK POINTER 8-BIT TIMER/ COUNTER XIN XOUT I/O PORT 0
PROGRAM COUNTER
PROGRAM STATUS WORD
COMPARATOR
256 x 4-BIT DATA MEMORY
2-KBYTE PROGRAM MEMORY
P0.0/CLO 1 P0.1/TIO 2 P0.2/INT1 3 P1.0/KS0/CIN0 4 P1.1/KS1/CIN1 5 P1.2/KS2/CIN2 6 P1.3/KS3/CIN3 7 XOUT 8 XIN 9 VSS 10
20 VDD 19 P3.3/BUZ 18 P3.2/SI 17 P3.1/SO
KS57C0301 (Top view)
16 P3.0/SCK 15 P2.3 14 P2.2 13 P2.1 12 P2.0 11 RESET
NOTE: Pin assignments are identical for the 20-pin DIP and SOP package.
IC, NJM2035
2-CH IN PUT 14 NC 13 12 TRIMMING 11 V+ 10 MPX OUT PUT 9 PILOT OUT PUT 8
2CH AMP TIME DIVISION MPX 1CH AMP Q
BUFFER
DIVIDER
19K
Q BUFFER 38K OSC AMP
1 1-CH IN PUT
2 NC
3 AC BYPASS
4 GND
5 AC BYPASS
6 YO CRYSTAL
7 TO CAPACITOR
8
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