Phone Is Dead - Nokia RH-18 Troubleshooting Instructions

RH-18/36/38

Phone is dead

This means that the phone do not draw any current at all when supply is connected and/
or powerkey is pressed.
It is assumed that the voltage supplied is 3.6 VDC. The UEM will prevent any functional-
ity what so ever at battery/supply levels below 2.9 VDC.
L260,L261,L262,L263,L264,L265
C260,C261,C262,C263,C264,C265
32.768 kHz, 1,8Vpp
1 sec. after power-key
26 MHz clock min. 300mVACpp,
probe Cin=10-13 pF/10M
Else defective D200*
Page 6
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Phone is dead
Yes
X105
No
VBAT = 3,6VDC
Yes
No
Voltage = 3,6VDC
Yes
J404
No
Sleep-clock is
Yes
J402
PURX = 1,8VDC,
No
is pressed
Yes
C227
No
VR3 = 2,78VDC
Yes
R426
No
Yes
Check :
D450 (Flash).
Figure 1: Phone is dead troubleshooting
Nokia Corporation.
CCS Technical Documentation
Check :
X105
Check :
L260,L261,L262,L263,L264,L265
C260,C261,C262,C263,C264,C265
Check :
B200, C209, C210, PWB. Else
defective D200*
Check :
PWB.
Else defective D200*
Check :
C227, PWB.
Else defective D200*
Check :
C227, PWB.
Else defective D200*
Issue 1 10/03