K800 - K810
1202-3085 rev. 2
TROUBLESHOOTER
TROU
B
L
E
S
H
O
OTE
R
START
Test the phone
PHF speaker
and
Internal loudspeaker
Fault trace SW
Audio and FM Radio
FM Radio
Freqvency
100.00Mhz
Set FM Radio
Replace
N2600
Yes
Clame
resolder
No
No
2.7 Volt DC
At MP 77
VFM27
Yes
Some signal at
MP 81 C2615
MP 80 C2616
Yes
Yes
Signal ok
Replace
N2600
Sl 4 go to next
SL 5 Resolder
C2608 L2602
C2609 L2603
C2610 C2611
Clame
System connector
Replace
N2203
Signal ok
Signal ok
Yes
Clame
Resolder
No
1.8 Volt DC
At Mp 76
FM_EN
Scrap
D2000 faulty
Yes
No
Sl 4 Resolder N2600
Sl 5 Resolder
V2600 V2601
No
No
Replace
System connector
Add
signal generator
20.0 uVrms +/-22.5
kHz 1kHz tone
Freqvency
100.00 Mhz
To
Pin 2 X2300 signal
Pin 9 X2300 shield
Load the ITP Sw into
the phone.
Use fixture
Use fault trace SW
FM radio Internal
loudspeaker
Works properly
No
Replace
N4202
PHF works with
Normal call
No
Yes
Replace
N2000
Yes
Signal at all when
tested
Replace
N2000
No
Yes
FM Radio problems
Start
Load the ITP Sw into
the phone.
Use fixture
Connect 3.8V
Limiter 2A
Use fault trace SW
Replace
N2000
Yes
Replace Vibrator
Clean Pad X2506
Clean Pad X2507
Yes
3.0 volt PTP
Pulses at VIBR
MP 49
No
Yes
No
Sl 5 Replace or
Resolder L3100
Sl 4 scrap
Ground at
VIBN
X2507
No
Sl 5 Replace or
Resolder L3101
Sl 4 scrap
Fault trace SW
MMI
Misc
Start Vibrator
C3116 or C3115
Short circuit
3.0 Volt PTP
Pulses at VIBP
X2506
No
Sl 5 Replace C3116
or C3115
Sl 4 scrap
Yes
Vibrator problems
Trouble Shooting Guide FM Radio Problems - Vibrator Problems
SEMC Electrical Repair Manual
55
(121)
Summary of Contents for K800
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