AKIRA 3Y01 Diagram
ALIGNMENT INSTRUCTION (3Y01)
GENERAL SET-UP
1. Please notice the following before alignment and equipment:
1.1. Don’t short any two soldering points, which should not be shorted and don’t touch any
components, which should not be touched.
1.2. Please pull out plug before equipment.
1.3. For safety reasons, all components equipped or replaced should be identical with BOM.
1.4. Must be warm up for 30 minutes or more and degauss CRT thoroughly with demagnetizer before
alignment.
1.5. The data of EEPROM must be stored before the adjustment for main chassis.
2. Tools and equipment for adjustment
2.1. Small “-” screwdriver
2.2. Screwdriver without inductance
2.3. Pattern Generator
2.4. DC Regulated power supply
2.5. Digital Voltmeter
2.6. Sweep Signal Generator
2.7. 20MHz 2-channel Oscilloscope
6
3. Signal condition
P
I
C
T
U
R
E
P
I
C
P
I
ITEMS LOGO
1 CHN-1CH 49.75MHz
2 WE-6CH 182.25MHz RED PATTERN PAL-B/G
3 CHN-12CH 216.25MHz
4 CHN-13CH 471.25MHz
5 USA-33CH 585.25MHz COLOR BAR NTSC-M --------
6 -------- 751.25MHz
7 -------- 85.25MHz
8 WE-S20CH 294.25MHz Semi -COLOR BAR PAL-B/G
Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0
C
CARRIER
T
U
R
E
T
U
R
E
PATTERN SYSTEM
PHILIPS
PATTERN
GREY SCALE
/COLOR BAR
CROSS HATCH
PATTERN
MONOSCOPE
PATTERN
GREY SCALE
/COLOR BAR
SECAM-
PAL-D/K 1KHz
SECAM-L’ 1KHz SYS -2
PAL-I 1KHz
D/K
PAL-I
SOUND
MODE
L: --------
R:400Hz
SWEEP
SOUND
SWEEP
SOUND
REMARK
STEREO/
TELETEXT
WITHOUT
SOUND
CARRIER
DOUBLE
SOUND
CARRIER
(A) MAIN CHASSIS ALIGNMENT
1. IF Alignment for main chassis
1.1. PIF Adjustment (38.9MHz)
1.2. Tuner AGC connects to GND. Pattern Generator outputs 38.9MHz R.F. signal and connects to
tuner output terminal or pin5 of saw filter.
1.3. Connect Digital voltmeter across C227. DC Regulated power supply positive terminal output
+20V to pin1of IC203 and negative terminal of D608. DC Regulated power supply negative
terminal connects to pin2 of IC203.
1.4. Adjust L203 coil to obtain 3.6V Digital voltage meter reading.
Fig.1
+
7
20V
+
TUNER
IC 203
IF
Ic302
L108
Ic201
C227
L203
D608
Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0
Tuner AGC connects to GND. Connect Sweep Signal Generator to tuner IF output terminal.
2. System NTSC Adjust (L108).
2.1.
oscilloscope V-IN terminal connects to C109. And connect Q102 'base' pole to the power
terminal(+9V) of R104 through a 10K resistor.(shown in FIG.2)
2.2. Apply +20V DC across IC302 as shown in FIG.2.
2.3. Adjust L108 to obtain waveform as following.
Note: There will be no alignment required for TV without off-air NTSC system feature.
FIG.2
8
+20V
TU N E R
D
Q102
IF
R104
10k
C109
IC 203
Ic3 02
L108
MAIN CHASSIS
Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0
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