akira CT-34TP9ATS, Service Manual

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24
Model No: CT-34TP9ATS
Version 1.0
h. RF. AGC adjustment (KEY 4)
i. Receive 60dB RF signal. Connect Digital voltmeter positive terminal to
tuner AGC terminal and negative terminal to GND.
ii. Entering the AGC item in factory mode by the REMOTE CONTROL.
Metod. Press key CLOCK, P.M. inturn, you can enter into factory mode,
then press key “4” and select AGC item by PROG+/-.
iii. Adjust “VOL+” and “VOL-” keys to obtain 3.8V Digital voltage meter
reading or just no NOISE on screen.
iv. Press key “ + ” to exit factory mode.
i. E2PROM initialization
i. When in repairing, we can replace E2PROM by other empty or unempty
E2PROM, but you must initialize E2PROM to avoid unknown things.
ii. Methods:
1. Press remote control KEY CLOCK, P.M. in turn to entering
factory mode.
2. Press remote control KEY 8 to entering INIT menu, then press key
PROG +, you can see “INIT BUSY” waiting for about 5 seconds
till “BUSY” disappeared, then POWER OFF and ON by main
power E2PROM initialization in completed.
iii. Setting the data in E2PROM. When in manufacturing, first you read the data
from an good E2PROM 24C08, then WRITE to other E2PROM 24C08.