Philips L9.2EAA, Руководство по обслуживанию

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Faultfinding trees, blockdiagram, supply diagram and testpoints. GB 18 L9.2E 6.
uP Internal RAM
error
Check / replace
(A7); IC7600
1 1 7 8
ERR 8
High beamcurrent ,
E/W and Horizontal
Protection.
- When the High
beamcurrent protection
is started, fly-back lines
will be visible for 15 sec.
before the set is really in
protection.
- When E/W or
Horizontal protection is
started, the set will hicc-
up for 4sec. before the
protection is really
activated.
- During E/W or
Horizontal protection
the EHT will not be able
to turn on and so the
VlotAux5V to the Tuner
and Sound IC is not
available. As such
ERROR 4 and ERROR
11 will be reported too.
Message :
ERR 11 4 2 0 0
Check/Replace
(CRT); R3340,
+160V supply
or
E/W,Horizontal Prot.
(A2);Conn.0221
1 1 1 D
Yes
ERR 2 ERR 7 No
Yes
General I 2 C error.
Check SCL and SDA
line of all units for
shortcircuit to ground or
to each other.
The Error code can
only be read by
putting the TV set into
the SDM mode. The
LED will blink 7 times.
Check / replace
(A5); Tuner1000 pin4,5
(A6); IC7250-C pin7,8
(A7); IC7600 pin49,50
(A7); IC7601 pin5,6
(A10); IC7833 pin9,10
Replace the item, which
causes the error.
1 1 7 8
No
Yes
ERR 5
or 6
Yes
No No
BIMOS error.
The error is detected,
because there is no
communications on I
2
C
of the BIMOS
Message :
ERR 4 6 0 0 0
CheckReplace
(A4,A5) ; the
+8VBIMOS and the I
lines pin7,8 of IC7250
1 1 1 A
No
ERR 4
and/or
11
+5 V Protection
Check
(A2); +5V
Yes
ERROR 4
Fault in audio section
In this situation the set
turns on without sound.
Message :
ERR 4 0 0 0 0
Check/Replace
(A10); +5V,
7803 pin9,10.
1 7 X
ERROR 11
I
2
C Tuner error
- It is possible
that 5V
protection Error 4
will be reported
too
Message :
ERR 11 0 0 0 0
CheckReplace
(A5); Tuner1000
1 1 2 0
EEPROM error
- When I
2
C
signals or the
+5D are missing
on IC7601 the set
can function, but
will not be able to
store any data.
Message :
ERR 10 0 0 0 0
Check/Replace
(A7); +5VD
IC7601 pin 5,6
1 1 7 X
No
B
ERR 10
Yes
ERROR 9
New micro controller or
EEProm.Default values
were loaded. Re-align
the set. If the problem
persists, then IC7601
is defective
1
ERR 1,
3, 12
X-Ray/Over-voltage
Protection.
(USA version only)
- When the X-Ray
protection is started, the
set will hicc-up until the
voltage at pin 50 of
IC7250 becomes >3.9
Volts. At the voltage of
3.9 V the set is put in
protection mode.
- During x-ray protection
the EHT will not be able
to turn on and so the
VlotAux5V to the Tuner
and Sound IC is not
available. As such
ERROR 4 and ERROR
11 will be reported too.
1 1 7 8
ERROR 1 ERROR 3
Vertical / Frame
Protection.
- Before the proctection
is really actived, a
horizontal line will be
visible for 3 sec.
- During Vertical /
Frame protection the
EHT will not be able to
turn on and so the
VlotAux5V to the Tuner
and Sound IC is not
available. As such
ERROR 4 and ERROR
11 will be reported too.
Message :
ERR 11 4 3 0 0
Check / replace
(A3);IC7460
C2464,D6460
Conn0222
1 1 1 D
ERROR 12
Black current calibration loop instable (protection)
2
C
CL 96532028_012.eps
290399