Sanyo CE29FFV2-F, Руководство по обслуживанию

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Service Manual MS CE25FV2-E
12
18 Failure location flow-charts
ERROR_1
Check the +8V supply
in pins 12 and 37 of IC400
Check I2C bus path to
pins 7 and 8 of IC400
OK
Replace IC400
OK
Switch on the TV set with PL100
pushed (protect mode disabled)
ERROR_2
Check the vertical deflection
path to IC701
Are the retrace
lines visible?
*Check +B3 at IC500
*R506 is possibly fused
*IC500 is possibly damaged
Switch on the TV set with PL100
pushed (protect mode disabled)
Adjust G2 just to see the picture
Check TO478
(Output of IC701)
Check the path of
V_GUARD signal
Check +B5
in pin 8 IC701
Replace IC701
Check B4 in
pin 4 IC701
Open the pins 1 and 2 of
IC701 and check the
+V_DRIVE and -V_DRIVE signals
Replace IC701
Check the path
of +V_DRIVE and -V_DRIVE
signals in IC400
Replace IC400
No
Yes
OK
NG
OK
OK
NG Yes
Probably:
*C425 failure
*IC400 failure
Check TO047
(Ramp generator)
No
OK
NG
ERROR_5
Check +5Vin L1304 (audio PCB)
Check I2C bus path to
pins 4 and 5 of IC1300 (audio PCB)
Check +5V in pins
7, 15, 38, 59 and 64 of IC1300 (audio PCB)
Replace IC1300
OK
OK
Check the crystal oscillador of IC1300
OK
OK
ERROR_6
Check +5VM in pin 8 of IC125
Replace IC125
Check I2C bus track continuity
in pins 5 and 6 of IC125
OK
OK
OK
OK
Does it happen quickly
after switch on?
Is the vertical
size OK?