HTC QUARTZ Service Manual page 57

Doc. Title
4．Unusual Vertical / Horizontal lines or partial display
(1) Check the connection of LCM FPC whether is properly connected.
(2) Try to cold boot the unit then tries again.
(3) Try to re-flash the ROM code.
(4) Try with another T/P with bezel assembly.
(5) Try with another Main Board.
(6) Replace T/P with bezel assembly if necessary
(7) Replace Main Board if necessary.
(8) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
5．Back Light Does Not Turn ON/OFF
(1) Check the connection of LCM FPC whether is properly connected.
(2) Try to re-flash the ROM code.
(3) Try with another T/P with bezel assembly.
(4) Try with another Main Board.
(5) Replace T/P with bezel assembly if necessary
(6) Replace Main Board if necessary.
(7) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
6．PC Connection not possible
(1) If test result is NFF, it is possible caused by user connect cradle to computer before ActiveSync is
installed.
(2) Check whether "Connection Settings" in the MS ActiveSync is properly set.
(3) Check whether it connects with other cables or cradle, customer's cable might be damaged.
(4) Check the external appearance of the connector on the unit whether it is physically damaged.
(5) Try to re-flash the ROM code.
(6) Replace Main Board if necessary.
(7) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
HTC CONFIDENTIAL
HTC Corporation
.
QUARTZ Service Manual
Doc. No. DOC-00046130
Issued Date 2008/9/1
Revised Date 2008/12/10
Page 57 of 80
SM-TP001-0704
REV.
A05