akira CT-34TP9ATS, Service Manual

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21
Model No: CT-34TP9ATS
Version 1.0
SERVICE ADJUSTMENT
1. Please notice the following before debug and equipment
a. The main power is 90~260V/50/60Hz. Please be careful when you debug and equip.
b. Don’t short any two soldering points, which should not be shorted and don’t touch
any component, which should not be touched.
c. Pls pull out plug before equipment.
d. For safety reasons, all components equipped or replaced should be identical with
BOM.
e. Must be warm up for 30 minutes or more and degauss CRT thoroughly with
demagnetizer before alignment.
f. The data of EEPROM must be stored before the adjustment for main chassis.
2. Tools and equipments for adjustment
a. Small “-” screwdriver.
b. Screwdriver without inductance.
c. Pattern Generator.
d. DC regulator power supply.
e. Digital
Voltmeter.
f. Sweep signal generator.
g. 20MHz 2-channel Oscilloscope.
h. Signal condition
ITEMS LOGO PICTURE
CARRIER
PATTERN SYSTEM SOUND
MODE REMARK
1 CHN-
1CH
49.75 PHILIPHS
PICTURE
PAL--I 1KHz
2 USA-
3CH
61.25 COLOR BAR NTSC--M 1KHz
3 WE-6CH 182.25MHz RED FIELD PAL--BG L: R:
400HZ A2 STEREO
/TELETEXT
4 CH12 205.25MHz CROSS HATCH NTSC/M 1KHz
5 CHN-
12CH
216.25 GREY/COLOR
BAR
SECEM --
D/K BTSC
6 224.25 PHILIPHS
PICTURE PAL--BG A: BTSC
B: MUSIC
C: 1KHZ
B/G NICAM
7 WE-
S20CH
294.25 HALF COLOR
BAR
PAL--BG A: 400HZ
B: 1KHZ
STEREO
8 CHN-
13CH
471.25 CROSS HATCH PAL--D/K 1KHZ
9 489.25 MONOSCOPE NTSC 1KHZ
10 751.25 MOMOSCOPE PAL--I A: BTSC
B: MUSIC
C: 1KHZ
I NICAM
3. Power adjustment
Connect a 100W bulb cross C616. Then connect AC 220V power to CN601. If the bulb light,
the voltage is prescriptive, and there is no unconventionality, then the power is OK, else be
repaired.