User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 71
Issue 1 06/01
2.19.5 Headset out of order
Check XMIC and
AUXOUT
Voltage
OK
Check XEAR and GND lines
D300 (MAD)
OK?
NO
Headset out of order
NO
OK
RAE–3
detects HS ?
(CMT lcd reads
”headset”)
NO
at C202 (HEADDET)
low ?
faulty
SGND lines
from System Conn.
X450 pins 6 and 4
Check
C202, R203, L452
C464. R460, L450,
C462, R455, C460
C461, C452, C450
OK
Head–
set earpiece capsule
OK ?
NO
from System Conn
X450 pins 5 and 11
to COBBA and
R208, C213, L451,
C451, C463, R459
Check N100
(CCONT) EAD value
with WinTesla
Accessor _
detection
D300 (MAD)
faulty
NO
Check C201
N200 (COBBA) faulty
OK
Head–
set Mic OK during
a call ?
OK
Check XMIC line from
System Conn X450 to N200
and
C207, C216, C215, C219
Continues next page
Measurements
in Service Jig
voltage between
R200 and R202 is
1.5V during
call?
OK
N100 or
Figure 59.