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IC502 OF VIDEO BOARD
IC502 of the VIDEO board consists of the former type and new type. The following table shows the differences between the two types.
Only spare parts for the new type IC502 are supplied.
Units using the former IC502 will not function when replaced with the new type without performing the following procedure.
Consequently, replace IC502 of units using the former type according to the following procedure.
Table of Differences
FORMER TYPE NEW TYPE
C407, 408 MOUNT NO MOUNT
IC502 M306200MC-302FP M306200MC-305FP
JW421, JW422 NO MOUNT MOUNT
IC402 MOUNT NO MOUNT
R413, 421, 422 MOUNT NO MOUNT
X401 MOUNT NO MOUNT
Replacing Procedure
1. Remove IC402.
2. Solder JW421 and JW422, or short-circuit with a lead wire, etc.
3. Replace IC502 with a new one.
How to Differentiate [VIDEO Board] (SIDE A)
Those with IC402: FORMER TYPE
Those without: NEW TYPE
IC505
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