3-3
Replace Main B/D
Refer to Front Part
Replace IC503
Reconnect it.
2. µ-COM Circuit
A. No Power
Does Logo appear
on the screen?
Is oscillation of
X501 normal?
Are IC501 Pins 193, 80
and 81 normal?
Do
es
“Hello” appear
on
FLD?
Is P3901
connected normally?
16, 19 normal?
The waveform
on 3, 5, 7 pin of IC503
normal?
Check the oscillation
Check short.
OK
Replace IC501
or IC3F1.
Check power.
(Refer to power)
If power is
normal
OK
POWER ON
1
1
YES
YES
YES
NO
YES
YES
YES
A
NO
NO
NO
NO
NO
NO
NO
YES
A
Is P3901 Pin 15,
Summary of Contents for T 572
Page 1: ...NAD SERVICE MANUAL T 572 T 572 DVD VCD CD PLAYER DVD VCD CD PLAYER DRAFT DATE 30 OCT 2002 ...
Page 36: ...3 31 3 32 7 A V CIRCUIT DIAGRAM 02 03 19 R14137B ...
Page 37: ...3 33 3 34 8 JACK CIRCUIT DIAGRAM T572AH ...
Page 38: ...3 35 3 36 9 JACK CIRCUIT DIAGRAM T572C ...
Page 41: ...3 41 3 42 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE BOTTOM SIDE TOP SIDE ...
Page 48: ...MEMO ...
Page 50: ...M E M O M E M O ...
Page 66: ...MEMO ...
