Panasonic UB-T880 / UB-T880W (serv.man2) Service Manual / Supplement ▷ View online
13
Symptom
Possible Cause
Checkpoint
2. A contact location on the
Screen Board cannot be
detected.
Screen Board cannot be
detected.
1. Main unit (elite Panaboard) does not work properly. Refer to Sec. 9.1
2. Electronic Pen does not
work properly.
2. Electronic Pen does not
work properly.
1. Battery problem
1. Check that the battery is properly attached in the
Electronic Pen.
Electronic Pen.
2. Selector Dial Switch
does not work properly.
does not work properly.
1. Set the switch to the position except for "Low-Power
Mode" position.
2. Check that LED lights up by waving the pen.
(If no, replace the battery and then retry the waving).
3. Replace the Electronic Pen.
Mode" position.
2. Check that LED lights up by waving the pen.
(If no, replace the battery and then retry the waving).
3. Replace the Electronic Pen.
3. Battery control block
problem
problem
1. Set the Selector Dial Switch to the position except for
"Low-Power Mode" position.
2. Check that LED lights up.
"Low-Power Mode" position.
2. Check that LED lights up.
→ If no, replace the battery and then retry the waving.
3. Replace the battery and then reconfirm the above "2"
item.
4. Rotate the Selector Dial Switch to check that each LED
(except for Low-Power Mode") lights up.
5. Replace the Electronic Pen.
item.
4. Rotate the Selector Dial Switch to check that each LED
(except for Low-Power Mode") lights up.
5. Replace the Electronic Pen.
4. Penpoint problem
1. Check whether the penpoint becomes worn.
2. Replace the penpoint.
2. Replace the penpoint.
5. Communication problem
between Main Unit (elite
Panaboard and
Electronic Pen
between Main Unit (elite
Panaboard and
Electronic Pen
1. Check that LED is lighting up.
2. Replace the Electronic Pen.
2. Replace the Electronic Pen.
3.
USB Wireless
Adaptor’s
problem
during using the Electronic
Pen
Pen
1. Dongle problem
1. Check that the connection between the
USB
Wireless Adaptor
and its connection cable.
2. Replace the
USB Wireless Adaptor
.
2. USB cable problem
1. Check that the connection between the
USB
Wireless Adaptor
and its connection cable.
2. Check that the connection between the USB cable and
CONTROL Board.
3. Replace the USB cable.
CONTROL Board.
3. Replace the USB cable.
3. CONTROL Board
problem
problem
1. Check the connection between the USB cable and
CONTROL Board.
2. Check the soldering condition of IC208, IC210 (HUB
Controller), and IC209 on the CONTROL Board.
3. Replace faulty parts or CONTROL Board.
CONTROL Board.
2. Check the soldering condition of IC208, IC210 (HUB
Controller), and IC209 on the CONTROL Board.
3. Replace faulty parts or CONTROL Board.
14
8 “SECTION 10 BLOCK DIAGRAM”
8.1.
“Section 10.1 Block Diagram”
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15
8.2.
“Section 10.2 Connection Diagram”
8.2.1.
“Section 10.2.1 Main Unit”
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JK802
DC OUT
USB Wireless
Adaptor
Adaptor
Change
16
8.3.
“Section 10.3 Explanation of Connector”
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1
1
VBUS
VBUS Signal
2
2
D-
D- Signal
3
3
D+
D+ Signal
4
4
GND
Ground
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