Read Panasonic UB-T880 / UB-T880W (serv.man5) Service Manual Supplement online
4
3 “SECTION 9 TROUBLESHOOTING”
3.1.
“Section 9.4 Others”
Symptom
Possible Cause
Check Point
1. Power LED does not
light up.
light up.
1. Power SW / LED Board problem
1. Restart the elite-Panaboard, and then check the Power LED
status.
2. Check the soldering condition of SW300 and D301 on the Power
SW / LED Board.
3. Replace faulty parts or Power SW / LED Board.
status.
2. Check the soldering condition of SW300 and D301 on the Power
SW / LED Board.
3. Replace faulty parts or Power SW / LED Board.
2. The connection between CONTROL Board
and Power SW / LED Board is not proper.
and Power SW / LED Board is not proper.
1. Restart the elite-Panaboard, and then check the Power LED
status.
2. Check the connection between CN300 (on the Power SW / LED
Board) and CN206 (on the CONTROL Board).
3. Replace the cable between CN300 and CN206.
status.
2. Check the connection between CN300 (on the Power SW / LED
Board) and CN206 (on the CONTROL Board).
3. Replace the cable between CN300 and CN206.
3. CONTROL Board or POWER Board
problem
problem
1. Restart the elite-Panaboard, and then check the Power LED
status.
2. Check the soldering condition of Q200 on the CONTROL Board.
3. Check the following signals on the CONTROL Board.
(1) CN208-1st pin: Approx. 5 V?
status.
2. Check the soldering condition of Q200 on the CONTROL Board.
3. Check the following signals on the CONTROL Board.
(1) CN208-1st pin: Approx. 5 V?
→ If no, POWER Board has some problems.
(2) IC217-3rd pin: Approx. 3.3 V?
→ If no, CONTROL Board has some problems.
4. Replace faulty parts, POWER Board, or CONTROL Board.
4. Automatic power-off function is
operating.
(Only applied to Serial Number
xxxxxxGxxxx or later corresponding
to "2nd Version Product complying
with ErP directive")
operating.
(Only applied to Serial Number
xxxxxxGxxxx or later corresponding
to "2nd Version Product complying
with ErP directive")
Note:
If you switch off the computer
connected to the elite
Panaboard, or unplug the USB
cable, the elite Panaboard turns
off automatically after about 60
minutes.
connected to the elite
Panaboard, or unplug the USB
cable, the elite Panaboard turns
off automatically after about 60
minutes.
1. Restart the elite-Panaboard, and then check the
Power LED status.
Power LED status.
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