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. IC501
2-1-1. Solution
Replace IC501 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check the +12 VA (CN202) and 3.3VA (IC503) in standby mode.
If there is no 12 VA, check the SMPS and if doesn’t appear 3.3 VA, check IC503.
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 IC501 with a new one
on the main board.
2-1-3. Service hint (Any picture/ Remark)
< MAIN board top view >
< MAIN board bottom view >
X500
X500
(24 MHz)
(24 MHz)
X501
X501
(32.768 kHz)
(32.768 kHz)
KEY1
KEY1
(R518)
(R518)
PWR_CTRL
PWR_CTRL
R559
R559
Содержание OM7560
Страница 13: ...1 12 ...
Страница 19: ...2 8 ...
Страница 53: ...3 34 2 SDRAM IC502 Fig 2 SDRAM 7 6 8 5 8 6 7 5 ...
Страница 54: ...3 35 3 SERVO IC401 X XI XO Fig 3 2 CD 16M IC401 pin31 Fig 3 1 X400 Crystal 16 9344 MHz 10 9 11 10 9 11 ...
Страница 66: ...3 77 3 78 2 MAIN P C BOARD TOP VIEW ...
Страница 67: ...3 79 3 80 MAIN P C BOARD BOTTOM VIEW ...
Страница 68: ...3 81 3 82 3 TOP FRONT P C BOARD TOP VIEW ...
Страница 69: ...3 83 3 84 TOP FRONT P C BOARD BOTTOM VIEW ...
Страница 70: ...3 85 3 86 4 JACK RMC P C BOARD TOP VIEW BOTTOM VIEW 5 FRONT LED P C BOARD TOP VIEW BOTTOM VIEW ...