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Great quality complete service manual! complete parts list and drawings. Thanks!
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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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1-2. PROM
1-2. PROM
Program names are shown in the suffix of original name of the PROMs. When the version of program changes, the suffix of program name will be changed. Be sure not to use the unprogrammed PROMs. Since all the PROMs are mounted on the board through the IC socket, be very careful when removing the PROMs. . IC5/CPU-286 board . IC6/CPU-286 board
1-2-1. PROM Version Check
n The version indication can be displayed in �Engineer Mode� and above. (Refer to the Operation Manual.) Select �MSU� in the menu (configuration menu) on the EL display, then select �Information� successively. The version of PROMs will be displayed.
1-2-2. Notes on PROM Replacement
When replacing PROM (IC5 or IC6) on the CPU-286 board, be sure to replace both IC5 and IC6 at the same time. When mounting the PROMs, be sure to insert MSU7x0AL (LOW) in IC5 and MSU7x0AH (HIGH) in IC6. If you are confused between IC5 and IC6, this unit does not operate normally.
MSU-750 MMP2
1-3 (E)
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