User Guide

After Sales
Technical Documentation
THA–4S
Troubleshooting Guide
Page 10
Original, 12/95
Transmitter Fault (2)
N
Y
Y
Y
RF Level
N
Y
N
Y
Y
N
RF level L214
–27dBM
Check
V216, R279, R280
Check
R280, R224, R237
N
N
N
Y
Y
Y
A
C
D
E
B
N
N
Check
R276, R277
–39dBm
836.4MHz
V212/c
V212/c= 4.2Vdc
Check
R262
Check
R297, L209, C293,
R265, R264
Change of
VCONT possible
Check
V216, V215, R279,
R281, R282
Y
Y
Power level 2
Bit 1>4Vdc
Bit2>4Vdc
Power level 7
Bit 1>4Vdc
Bit2<1Vdc
Check
R266, R267, D101,
N203
Check
N203
RF Level
–40dBm
836.4MHz
V213/b
RF Level
–32dBm
836.4MHz
V213/c
RF Level
–41dBm
836.4MHz
V219/b
Check
C278, C279, L211,
C281, V211, C283,
C284, R258, C287
Check
V213, R261, R260,
R259
RF Level
C316
–23dBm
836.4MHz
RF Level
836.4MHz
C295 > –8dBm
Check
Z201, X101
Check
C290, Z210, C317,
L213
Check
V219, C219, L212
Check
VCC1, N203
V203
V215