Display Faults - Nokia RH-34 Series Technical Documentation Manual

CCS Technical Documentation

Display faults

Display
faults
Are the Keyboard
and LCD LEDs
turned on when
phone is turned on
or when making a
phone call?
YES
Display
faults,
page 2
Issue 1 11/2003 Confidential
Measure VBATT
voltage at R315.
NO
Is it OK?
YES
Set phone to Local Mode. Use
Phoenix "Message Sender" and
navigate as follows: DEV_HOST-->
DEV_PC-->PN_LIGHT-->
OBJ_ROUTING_REQ-->OBJ_PC-->
UTID-->LIGHT_CONTROL_REQ-->
LIGHT_CONTROL_TARGER_KBD.
Select "LIGHT_STATE_BLINK" and
click "Send"
Measure the driver
signal KLIGHT at
R304.
Is signal OK?
©2003 Nokia Corporation
Troubleshooting - Baseband
Check VBATT line at
X100 connector and
NO
NO
Check N300, L300,
V300, C302, C303,
C304, R300, R307,
YES
R315, R316, R317,
and X301 connector
RH-34
C109
Change UEM
Page 45