Marantz DV4200 - µ-COM Circuit Troubleshooting Guide

13
Check 3.3V.
Refer to Front Part
Check short
Reconnect it.
A. No Power
Does Logo appear
on the screen?
Does no DISC appear?
Does Hello
appear at FLD?
Is P5901
connected normally?
Is IC3F1 3.3Vcc?
Is pin3.5 of IC503 normal?
Is IC302, 303 Vcc?
Replace Main B/D.
Check power.
(Refer to power)
If power is
normal
OK
POWER ON
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NONO
NO
A
9.2 µ-COM Circuit