Service manual
CM153 10 ZLD15A1
9 No sound Defective Reset IC of IC603 1) Check volume and speaker
- Speaker Defective MSP3400D of IC601 - Sound comes out only when being input into Audio
- Earphone L/R
2) Check after replacing IC603
3) Replace IC601
10 Video color beat noise Earphone shield case being touched
Check the mould of shield and JA401, Replace shield case
Soldering IC901 and IC501 Re-soldering
1 Soft touch doesn't Defective speaker wire 1) Make some space between the speaker wire and
function properly and inverter wire the Soft touch Board by sticking the speaker wire
to the guide hole of the cabinet.
2) Arrange working state of A1. Tape in the inverter wire
and correct working state of the Shield case.
2 Soft touch doesn't 1) Broken components and 1) Check Soft touch with eyes
function soldering of them Check and repair soldering
2) P101 connector error 2) Check and repair the P101 connector
3 No screen Input error of inverter connector 1) Bend the pin legs of P802 connector -> recheck them
2) Check and repair the IC806 SI4925
P501 and Pin 41 connector 1) Check and fix P501 connector
slipped out 2) Check and fix the components at P501 LCD module
and at main board.
3) Check Pin41 and check and repair rubber packing
Cracked components and 1) Check and repair tuner board and main board
soldering at tuner board 2) Solder Q301, Q801 and R810
4 Dark screen 1) Defective LCD lamp 1) Replace the inverter
2) Defective inverter 2) Replace the LCD lamp
5 Broken OSD display Defective font rom of IC502 Replace IC502
TROUBLE SHOOTING
1. General Features
2. PC Mode
No.Problem Possible Cause Solution
No. Problem Possible Cause Solution
6 Screen noise Clock or phase being 1) Resettig is needed according to the video card of each
not able to be adjusted PC
2) Horizontal noise : adjust phase until no horizontal
noise occurres
3) Vertical noise : adjust clock in menu until no vertical
noise occurres
7 Screen position error Screen position error Adjust horizontal and vertical position until the screen
horizontally or vertically displayes normally
8 Color beat noise Soldering AD converter Recheck and repair
or making it short
3. TV and external input
No. Problem Possible Cause Solution