LG 32LG30 Series, Руководство по обслуживанию

Страница: 16 / 22

- 16 - Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Yes
3. Component doesn’t display.
Check JK700, JK702.
Can you see the normal waveform?
Check the input and output of BCM355x
(IC100). Especially you should check the
H,V sync and clock.
Can you see the normal waveform?
JK700, JK702 may have problem.
Replace this Jack.
No
This board has big problem because Main chip
(BCM355x) have some troubles.
After checking throughly all path once again,
You should dicide to replace BCM355x or not.
No
Yes
4. RGB_PC doesn’t display.
Check JK705.
Can you see the normal waveform?
Check the input and output of BCM355x
(IC100). Especially you should check the
H,V sync and clock.
Can you see the normal waveform?
JK705 may have problem.
Replace this Jack.
No
This board has big problem because Main chip
(BCM355x) have some troubles.
After checking throughly all path once again,
You should dicide to replace BCM355x or not.
No
Check DDC communication lines.(IC601,IC603, IC701)
Yes
Check the input and output of BCM355x(IC100).
Especially you should check the H,V sync and clock.
Can you see the normal waveform?
After checking the Powerof th chip, you should
decide to replace this or not.
No
Check the input connect JK601, JK602, JK708.
Can you see the normal waveform?
Yes
JK601, JK602, JK708 mayhave prolbem
Replace this Jack.
No
Check HDCP communication lines. (IC102)
Yes
After checking the Powerof th chip, you should
decide to replace this or not.
No
This board has big problem because Main chip
(BCM355x) have some troubles.
After checking throughly all path once again,
You should dicide to replace BCM355x or not.
No
5. HDMI doesn’t display.