3-4
ONE POINT REPAIR GUIDE
2. NO BOOTING WHEN POWER ON THE SET
The set doesn’t work when press the power button on the display board or the remote control.
2-1. FLASH MEMORY
2-1-1. Solution
Please check and replace IC105 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check 5.1 V to PN200 in standby mode.
If there is no 5.1 V, check the SMPS.
2) Check 12 V, 5.1 V and PVDD when power on the set.
- If the set doesn’t work regardless of what the KEY1 (R131) changes high to low while pressing the power button.
X100 and X101 work normally but, if you can not power on the set, replace IC105 with a new one on the
MAIN board.
2-1-3. Service hint (Any picture/ Remark)
< Signal check point >
KEY1 (R131)
KEY1 (R131)
PWR_CTRL (R149)
PWR_CTRL (R149)
IC105
IC105
Summary of Contents for CM2460
Page 11: ...1 10 ...
Page 13: ...2 2 ...
Page 15: ......
Page 17: ...3 SPEAKER SECTION A60R A60L ...
Page 46: ...3 29 13 14 4 USB USB_5V D D Figure 4 14 13 ...
Page 47: ...3 30 ...
Page 54: ...3 58 3 57 SMPS P C BOARD BOTTOM VIEW ...
Page 55: ...3 60 3 59 2 MAIN P C BOARD TOP VIEW ...
Page 56: ...3 62 3 61 MAIN P C BOARD BOTTOM VIEW ...
Page 57: ...3 64 3 63 3 DISPLAY P C BOARD TOP VIEW ...
Page 58: ...3 66 3 65 DISPLAY P C BOARD BOTTOM VIEW ...
Page 59: ...3 68 3 67 4 KEY P C BOARD TOP VIEW BOTTOM VIEW ...
Page 60: ...3 70 3 69 ...