Check Codec 2 Device - Tait TM9100 Service Manual

If the DC offset measured in
Task 16 —
Check CODEC 2
the auxiliary connector, check the CODEC 2 device.
Device
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
TM9100 Service Manual
© Tait Electronics Limited August 2005
Task 15
Remove the can.
CDC TOP
Check the voltage at both ends of R241 (see
R241: 1.5V DC at both ends
If the voltages are correct, go to
Check for and repair any soldering faults around IC205, or else
replace IC205 (see Figure
Confirm the removal of the fault and go to
page 147. If the repair failed, replace the main-board assembly and go
to "Final Tasks" on page
Remove R241.
Check the voltage at pin 3 of IC205 (see
pin 3 of IC205: 1.5V DC
If the above voltage is correct, go to
main-board assembly and go to
Check for and repair any soldering faults around R241 and IC205
(see Figure 13.10).
Confirm the removal of the fault and go to
page 147. If the repair failed, replace the main-board assembly and go
to "Final Tasks" on page
is incorrect but there is no fault with
Figure
Step 4. If they are not, go to
13.10).
"Final Tasks" on
147.
Figure 13.10):
Step 9. If it is not, replace the
"Final Tasks" on page
"Final Tasks" on
147.
CODEC and Audio Fault Finding
13.10):
Step 6.
147.
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