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Service & Analysis Center Europe
SACE AMS Training Group
SPEAKER DOES NOT WORK
1) Digital noise (TDMA) in speaker
Change slide – cover.
Change speaker.
2) No audio from speaker
Change speaker if necessary.
Check flex on display assy (bend or dirty).
Change display assy if necessary.
Check connections in EAR_P line - C204 to C404.
Check connections in EAR_N line - C203 to C405.
Both lines = 1,4V during call.
If one of the above fails – PCB faulty.
Check resistance between speaker lines and GND (>1 MOhm).
Probably MAD (D300) or PCB faulty.
1)
Temp ( 1,5V )
8) Light
2)
LCD enabled ( 2,8V )
9) VB
3)
Ear P( 1,3-1,9V )
10) GND
4)
LCD ( 2,8V )
11) GND
5)
GEN SIO
12) VBB (2,8V)
6)
Ear N ( 1,3-1,9V )
13) GEN SIO
7)
PWR_ON
14) LCD RSTX (2,8V without Display)
DISPLAY ASSY : EAR_N EAR_P
Repairhints_nse5_002508
CONFIDENTIAL
NSE-5
Repairhints
30.07.2000
Checked by:
AMS TRAINING GROUP
26 (30)
Version 1.0 Approved
Approved by:
SACE
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