Motorola E398 series Handboek voor probleemoplossing en debuggen - Pagina 11
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Motorola GmbH, CSS Center Flensburg, Mobile Devices
Title:
Troubleshooting-Guide E398
5.6 - Main Keypad - Customer Complaint: MKPxx
1.) If the Main Keypad is not working
check: - the
- for Dry Joints, Solder Shorts, damaged and skewed Parts
- replace missing or damaged Components
2.) If the Main Keypad is still not working
replace:
5.7 - Power Up - Customer Complaint: TON01
1.) If the PCB doesn't start up
check the
replace:
check the
replace:
2.) If the PCB starts Up in Flashmode
replace:
3.) If the PCB doesn't start up
check
replace if suspect
check
replace if suspect
Repair Support Information
Keyboard
-
J1401
-
J1301
-
U1400
-
U1401
-
S1460
-
SW1400
-
SW1402
-
U1400
(if not effective)
-
U1401
(if not effective)
-
U800
32kHz
at
Y900
-
Y900
(if not effective)
-
U900
26MHz
at
Y805
-
Y805
(if not effective)
-
U800
-
U700
(current drain ~ 1,5mA)
VBOOST
(5,6V) at L922, L921,
VBUCK
(1,9V) at L920, CR920, R920,
Doc. No:
Version:
Date:
Page:
CR921
and
U900
C927
and
U900
© Copyright 2003-2005 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_E398
0.9c
17.06.2005
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