MOTOROLA CONFIDENTIAL - PROPRIETARY
50
November 20, 2000
6881036B20
Troubleshooting
Product Family 38C
000797-O
Figure 36. No Charging
Is thermistor problem?
(check it using Gate22
processing test)
START
Is there 2.7 Volt on
BATT_THERM
terminal on
Pin 3
of
J604
?
Check
Q914
and
U905
Note 1 or Faulty.
Without battery, is there
2.7 Volts on
Pin 1
of
U905
?
(must be 0 Volt with battery)
Check
U905
and
Q908
Note 1 or Faulty.
Check
U800
Note 1
or Faulty.
Put the phone in
test mode and
enter 500255#
Is there approx. EXT_B+
voltage on
Pin 3
of
Q900
?
Check
R913
Is there 0 Volt on
Pin 4
of
Q900
?
Check
U900
Note 1
or Faulty.
Is there approx. EXT_B+
voltage on
Pin 1
of
J604
Check
Q900
Note 1
or Faulty and
J604
Note 1.
Check for intermittent
problems.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Note 1: Check components for correct
orientation, cold solder joints, physical
damage, and functionallity.
Summary of Contents for 38C V100
Page 1: ...Level 3 Service Manual Model V100 GSM Technology Product Family 38C Personal Communicator ...
Page 2: ......
Page 73: ...V100 BOARD LAYOUT PAGE 1 2 ...
Page 74: ...V100 BOARD LAYOUT PAGE 2 2 ...
Page 77: ...V100 CONNECTOR SCHEMATICS ...
Page 78: ...V100 DISPLAY SCHEMATICS ...
Page 79: ...V100 FM SCHEMATICS ...
Page 81: ......
Page 83: ......