LG 50PS8000, Руководство по обслуживанию

Страница: 64 / 77

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Making
Revision
2009. 2 . 1
1/14
PDP TV
Symptom
Power-Up Boot Fail
No
No
No
Doesn’t the low pressure
output come out?
Doesn’t the high tension
output come out?
High tension output
Voltage drop it occurs?
No
No
No
No
Yes
Yes No
Yes
Yes No
Is the Interface
signal operated?
2) Check the Interface signal condition
Yes
Yes
Doesn’t the Vs,Va voltage
output come out?
Yes
Yes
Yes
It is identical with
power off condition?
1) Check the Power off condition
Yes
Doesn’t the St-by 5V
signal come out?
Yes
Doesn’t the VSC
Vs-ON signal come out?
Yes
Yes
Manufacture enterprise
meaning of a passage
No
6) Check the
VSC low pressure output
Yes
When remove the Input connector
of Y/Z-Sus Board ,
Does it occur Power Board
high tension output voltage drop ?
Doesn’t the 5V monitor
signal come out?
Doesn’t the VSC signal
RL_ON come out?
Doesn’t the VSC
Low pressure output
come out?
3) Check the
ST_BY 5V signal circuit
4) Check the
5V Monitor signal circuit
5) Check the
VSC RL_ON signal
7) Check the
VSC Vs_ON signal
8) Check the
Vs, Va voltage output circuit
When remove the Input connector
of Y-Sus Board,
Does it occur output voltage drop ?
9) Check the power board
output high tension circuit
10) Check the
Z B/D Module output circuit
Yes
11) Check the
Y B/D Module output circuit
Doesn’t the screen
whole come out?
When remove the Input connector
of Z-Sus Board,
Does it occur output voltage drop ?
No
No