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 top board or the remote control.
2-1. IC500
2-1-1. Solution
Please check and replace IC500 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check the +12 VA (CN102) and 3.3 VA (IC501) in standby mode.
If there is no 12 VA, check the SMPS and if doesn’t appear 3.3 VA, check IC501.
2) Check +12 VA, +5.1 VA, 3.3 VA, DVCC_5V and DVCC_3.3V when power on the set.
- If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power button.
X500 and X501 work normally but, if you can not power on the set, replace the IC500 with a new one
on the MAIN board.
2-1-3. Service hint (Any picture/ Remark)
< MAIN board top view >
X500
X500
(24 MHz)
(24 MHz)
X501
X501
(32.768 kHz)
(32.768 kHz)
KEY1
KEY1
(R518)
(R518)
PWR_CTRL
PWR_CTRL
(R577)
(R577)
IC500
IC500
Summary of Contents for CM5660
Page 13: ...2 2 ...
Page 15: ......
Page 17: ...2 8 A60 3 SPEAKER SECTION ...
Page 51: ...3 34 2 SDRAM IC504 Fig 2 SDRAM 7 6 8 5 8 6 7 5 ...
Page 61: ...3 65 3 66 2 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Page 62: ...3 67 3 68 3 FRONT P C BOARD TOP VIEW BOTTOM VIEW ...
Page 63: ...3 69 3 70 4 JACK P C BOARD TOP VIEW BOTTOM VIEW ...