Philips L9.2EAA, Руководство по обслуживанию

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Faultfinding trees, blockdiagram, supply diagram and testpoints. GB 16 L9.2E 6.
A
No picture
(Colour missing)
No Menu
Black screen
Sound OK
An error code is
indicated by the blinking
LED via the SDM.
n-times blinking means
error n.
See also chapter 5.5 for
detailled information
Is there an error
indication
?
B
Yes
(B);
Heater / Filaments
OK
?
Check / Replace
(A2);L5480,Conn.0220
(B);Conn.0244,
L5342,CRT,
L5341
No
Yes
(B);VG2
OK
?
Adjust VG2
Check / Replace
(A2); TR5445,
(B);R3341,C2341
CRT
No
(A3);<F3>,<F4>
OK
?
Check/Replace
(A3);IC7401,
D6460.C2464,D6461
No
(A6);<V1..V4>
<V6,V7,V8>
OK
Check/Replace
(A6);IC7250-B/C
No
(B);<V11..V16>
OK
Yes
Yes
Yes
Check/Replace
(B);Conn0245,IC7311,
CRT Socket,
TS7333,160V
No
Check/Replace
(B);CRT
Yes
Ensure communication
with the RC,
Check/Replace
(A8);IC7680
Put the set into the
Service Default Mode
either via the DST or by
pressing the buttons on
the RC in the following
order :062596<MENU>,
or via the service pins
Deflection not OK
Pictures are not
symetrical and unstable
C
NO Picture
NO Sound
Menu OK
Check / Replace
(A5);Antenna,
D6007,
(A6);X1205..X1208
Sound and Picture
from external source
OK ?
Check / Replace
Tuner1000
Check / Replace
IC7250
No
Yes
1 1 3 0
1 1 3 0
1 1 3 0
1 1 3 0
1 1 3 0
1 1 3 0
Picture OK
Menu OK
NO Sound
(l,r,l+r)
(A5);<I9>
Ok ?
Ok ?
Ok ?
Check / Replace
(A5); TS7268,
TS7000,FIL1001,
FIL1002
Yes
Yes
Yes
No
Check / Replace
(A5); IC7250
Check / Replace
(A10); TS7951,
No
No
(A5); <L1>
OK ?
(A5); <L2>
OK ?
Yes
Yes
Check / Replace
(A5); Tuner 1000
Check / Replace
(A5); IC7250
No
No
Mono versions
(D1);<A20>
Ok ?
Yes
No
(P1);<A21>
;<A22>
Ok ?
Yes
No
(D2);<A25>
Yes
No
(A10);
<A4>..<A5>
Check / Replace
(A10);IC7953
IC7954
Check / Replace
(A10);Conn.0215,
Loudspeaker
No
1 1 2 0
1 1 2 0
1 1 1 A
If the mainsupply or
EHT is missing, then
the error message may
not be reliable. So in
this state check/replace
the
components of the
mainsupply and EHT in
the first place see
schematics ;
(A1), (A2) and
(A4);IC7250-D <S2>
CL 96532028_010.eps
290399
Yes
(A5);<I4>
(A10);<A3>
or
Ok ?
Check / Replace
(A5);TS7266
Conn0239
(D1);
TS7801, TS7802
Check / Replace
(D1);+8V,+5VA,
+5VB,x1801,
IC7803
Check / Replace
(D2);Audio Supply
10V / 14V
IC7953 or
IC7954
Check / Replace
(D2);Conn,0246,
Conn,0247
Speakers
Nicam/2CS
MSP3415D
<A26><27>
<28> Ok ?
No