OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
Text excerpt from page 15 (click to view)
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2-2-2. CPU-342 Mounted Circuit Board
1. When attaching the CPU-342 mounted circuit board into the unit, press the A portion as shown below and insert the CPU-342 mounted circuit board into the connector ( CN-601 ) of the TUN-8 mounted circuit board firmly so that the CPU-342 mounted circuit board is securely attached.
CPU-342 board
A CN701
CN601 TUN-8 board
2-3. Precautions When Replacing EEPROM
On the EEPROM (IC702) mounted on the CPU-342 board, frequency data corresponding to each WRR-855B have been written. After replacing an EEPROM, it is necessary to write the corresponding frequency data to the new EEPROM.
