Advertisement
Customer Care Europe, Middle East & Africa
SCCE Training Group
CHAPTER 3: PHONE DOES NOT SWITCH ON
consumption is higher than
Disable watchdog or press
powerswitch before each
© NMP 2002
Phone does not
switch on
Check if current
Continue with section
yes
"LOW STANDBY/OPERATION
500 mA
no
Check X203 if bent
Check VB 3.6 VDC at
nOK
or soiled, also
C227/228
check L513, L201
OK
Check if
Check/change
PWRONX at R402 drops
nOK
S419, R402, R224,
to 0 V during pressing
change N201 if necessary
powerkey
OK
measurement
Check
Check/change B200,
32.768 kHz at C220,
nOK
R211/212/214, C229/230
3 Vpp squarewave
or change N201
OK
Check
Check resistance of line to
VBB 2.8 VDC at
nOK
GND (~90 k). If line ok,
C209/211
change N201
OK
Check resistance of line to
Check VXO 2.8 VDC
nOK
GND (~45 k). If line ok,
at C243
change N201
OK
Check
Check resistance of line to
VCORE 1.7 VDC at both
nOK
GND (~180 k). If line ok,
sides of L200, change if
change N201
necessary.
OK
Check
Check 13 MHz RFC
PURX 2.8 VDC at
at C303
OK
R308 after pressing
(500 mVpp)
powerkey
nOK
nOK
Check values around
Change N201
G502, N500, V502
CONFIDENTIAL
NHM—2/5/6
3410
Date 20.11.2002
Flowchart 3-1
MODE TIME"
Try to flash the
OK
phone
nOK
Continue with section
"FLASH UPDATE NOT
POSSIBLE"
Checked by:
Customer Care E&A
Repairhints
Version 4.0 Approved
OK
Phone is ok
Approved by:
SCCE Training Group
17 (44)
Advertisement
