![Philips 32PW9523-05R Service Manual Download Page 25](http://html.mh-extra.com/html/philips/32pw9523-05r/32pw9523-05r_service-manual_1549264025.webp)
5
Service modes, error codes and protections
25
Figure 5-14
(A1);
<P12>,<P13>
=
+Vs,-Vs ?
Check/replace
(A1);
Fuse1220,
Fuse1221,
C2220,C2221,
D6218-D6221
(A4);
+7V7,-7V7 OK
?
Check/replace
(A4);
C2791,C2792
IC6770,IC6767
D6768,D6769
C2783,C2784
(A1);
+5V2 <P18>
OK ?
Check/replace
(A1);
Fuse1201
D6223,C2222
IC7212,TS7214
(K3);
+5DA,+5DB
OK?
Check/replace
(K3);
L5751,L5752
C2765,C2766
(K3);
IC7751 pin20
=18,4 Mhz ?
Check/replace
(K3);
X1751
(K1,K3);
<I11>,<I12>
OK
?
Check/replace
(K1);
IC7501,TS7111
(K3);
<
A7>,<A8>
OK?
Check/replace
(K3);
IC7751
(A4);
<
A
9
>,<A10>
OK ?
Check/replace
(K3);
IC7756
Conn. 0328
(A4);
<
A1>,<A2>
OK ?
Check/replace
(A4);
IC7740
Check/replace
(A4);
Conn. 0336
Conn. 0335
Speakers
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
Yes
(K3);
<
A20>,<A21>
OK?
No
(K3);
<
A14>,<A15>
OK ?
Check/replace
(K3);
IC7757
Check/replace
(K3);
Conn. 0344
Headphones
Yes
Yes
No
(K3);
<I13>,<I14>,<I15>
OK ?
Check/replace
(K3);
IC7751
No
DOLBY section
(only for Dolby sets)
(K4);
<A16>,<A17>
OK ?
(K4);
+5DC,+3V3S,
+3V3SD
+3V3SA OK?
Check/replace
(K4);
IC7750
C2819,C2816
C2818
No
No
Yes
Check/replace
(K4);
IC7770
Yes
(A4);
<A3>,<A4>
OK ?
Check/replace
(K4);
IC7750
No
Check/replace
(A4);
Conn. 0337,
Conn. 0338
Speakers
Yes
Yes
Main audio section
Headphone section
AUDIO
Fault Finding Tree
(K3);
IC7751pin61
high ?
Check replace
(K3)
; TS7774
No
Yes
Check of the
Supply and X-tal
section
MG21FFT4gb.VSD