NV-GS200EG, NV-GS200EB, NV-GS200EGM, NV-GS200GC, NV-GS200GN, NV-GS200GCT, NV-GS120EG, NV-GS120EB, NV-GS120EGM, NV-GS120GC, NV-GS120GN, NV-GS120GCT - Panasonic Movie Service Manual Supplement (repair manual). Page 2

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1 Notice when exchanging IC2001
For above models, Two types of Main microprocessor, FLASH ROM type and MASK ROM type, are utilized as IC2001 main
microprocseeor.
According to the type of IC2001, the circuit structure differs in between. thus, there is no compatibility between FLASH ROM type
of IC2001 and MASK ROM type of IC2001.
Moreover, the program version of IC2008, which is a FLASH ROM, is together put to the version of IC2001.
Therefore, be careful of the following two points at the time of IC2001 exchange.
 1. When replacing IC2001, a same type of IC2001, which is originally mounted onto P.C.B., should be replaced.
 2. After replacing IC2001, IC2008 also should be exchanged simultaneously. (IC2008 is enclosed with IC2001.)
Since exchanging procedure of IC2001 is indicated below. Please definitely follow, below 5 steps.
1.1. Check IC2001 before exchanging.
1.1.1. Confirm IC2001 either FLASH ROM or MASK ROM.
<Confirm procedure>
You can check by two procedures.
 1. Check on Main P.C.B.
 2. Check by part number printed on IC2001
2
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