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

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3. Signal condition

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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

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CARRIER

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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

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+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

33.4MHz

39.5MHz

THE UPMOST POINT

32.4MHz

38.9M

3. B+ adjustment

3.1. Disconnect horizontal load. Connect a light bulb (100 W) AC 250V across C321.

3.2. Connect 220V AC 50Hz to CN601 and switch on power switch.

3.3. Test the voltage with digital voltage meter between C321 two terminals.

3.4. Adjust VR601 to obtain +110V +/- 0.5V.

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4. AGC alignment

4.1. Receive 60dB +/- 2dB RF signal. Connect Digital voltmeter positive terminal to AGC terminal of
TUNER and negative terminal to GND.

4.2. Press “MENU" key twin, till the PICTURE MENU appears, then press “Q.VIEW” or “RETURN”
key, “MUTE” key to turn on CPU. TV SET will go to factory mode. Press “TIMER” key to go to
the next factory menu. Go to “MENU 3” status by this means.

4.3. Select RF.AGC by pressing “CH+” or "PROG+" and "CH-" or "PROG-" keys. Adjust “VOL+”
and "VOL-“ keys to obtain 4V Digital voltage meter reading.

4.4. Press “MENU” key to exit factory mode.

(B) CTV SET ALIGNMENT

1. Go to factory mode according to 4-4-2 before warm up line.

2. Focus Adjustment.

2.1. Receive monoscope pattern.

2.2. Set TV to work in dynamic status.

2.3. Adjust the focus knob of FBT to get the clearest picture.

3. Screen Voltage Adjustment.

3.1. Go to factory mode “MENU 2” status according to 4-4-2.

3.2. Select “V-KILL” by pressing “CH+” or "PROG+" and "CH-" or "PROG-" keys..

3.3. Press and hold on the “VOL+” key all the time, Adjust the screen knob of FBT to get a horizontal
faintness beam line. Then release "VOL+" key.

Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0

4. (A) White Balance Adjustment (Applied in factory only)

4.1. Set the TV set to AV mode. Receive black white pattern (Color Temperature test pattern).

4.2. Insert 6 Pin Service flat cable into CN002. Press adjustment keys, and then go to automatic white

balance adjustment.

4.3. After adjusting well, remove the 6 Pin Service flat cable.

4. (B) White Balance adjustment (Applied when servicing)

4.1. Set the TV set to AV mode. Receive black white pattern (Color Temperature test pattern).

4.2. Put the test probe 1 of CRT color analyzer (CA-100) on the Low Bright area and the test probe 2

on the High Bright area. Adjust bright and contrast to get 5nit of low bright area and 80 nit of high
bright area.

4.3. Go to factory mode “MENU2” according to 4-4-2. Obtain Low Bright area to x=281and y=311 by

adjusting R.bias and B.bias. Obtain High Bright area to x=281and y=311 by adjusting R.drive and
B.drive. Obtain both area to x=281 and y=311 by adjusting the two status repeatedly.

5. Sub-bright adjustment

5.1. Receive GREY SCALE signal. (PHILIPS PM54200, 11 STEP)

5.2. Set TV at normal mode.

5.3. Get into factory mode, adjust sub-bright option to make the picture same as below.

4.

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Totally dark Can be seen the brightness

6. Vertical Size and PinCushion Adjustment.

6.1. Receive monoscope pattern. Set TV standard status. Adjust V.size to obtain picture’s vertical
redisplay ratio more than 90% in factory mode “MENU1”.

6.2. Receive cross hatch pattern. Set TV standard status. Adjust V.LINE and V.SC to obtain picture’s
vertical pin cushion a good status in factory mode “MENU1”.

6.3. Receive cross hatch pattern. Set TV standard status. In factory mode “MENU1” adjust
V.POSITION to obtain picture’s vertical center at the center of CRT screen.

7. Horizontal Centering Adjustment.

7.1. Receive PHILIPS PATTERN. Set TV standard status. Adjust H.PHASE to obtain horizontal
center at the center of CRT screen.

8. Secam color decoder alignment.

8.1. Receive the GREY SCALE /COLOR BAR signals. Enter into the factory mode. Adjust the
values of Secam R-Y DC and Secam B-Y DC to make the gray scale to the normal color.

Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0

9. COLOR PURITY ADJUSTMENT

9.1. Before color purity adjustment, Warm up the TV set over 15 minutes and fully degauss.

9.2. Receive pure white signal in AV status and set the TV receiver dynamic.

9.3. Go to factory mode “MENU2”. After write down the values of R-BIAS and B-BIAS, set the
values of R-BIAS and B-BIAS zero.

9.4. Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color purity
magnetic loop.

9.5. Adjust color purity magnetic loop to make the green area at the center of CRT screen.

9.6. Slowly push the deflection yoke toward the front of CRT and set it where a uniform green field is
obtained. Tighten the clamp screw of the deflection yoke.

9.7. Restore the values of R-BIAS, G-BIAS and B-BIAS

10. CONVERGENCE ADJUSTMENT

10.1. Receive a dotted pattern. Set the TV receiver dynamic.

10.2. Loose the convergence magnet clamper and align red with blue dots at the center of the screen by
rotating (R, B) static convergence magnets.

10.3. Align Red/Blue with green dots at the center of the screen by rotating (RB-G) static convergence
magnet.

10.4. Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain
the good overall convergence. Fix them after the good overall convergence is obtained.

10.5. Fix the convergence magnets by turning the clamper.

10.6. If purity error is found, follow “PURITY ADJUSTMENT” instructions.

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Purity Magnet
RB-G RB

Magnet Clamper

Static Magnet

(C) FINAL INSPECTION AND ELECTRICAL FUNCTIONAL CHECK

1. CHECKING THE ELECTRICAL FUNCTION:-

1.1. Connect the power cord and connect the signal to RF input.

1.2. Check the power supply whether OK or not. Switch on the TV set and the LED is on. Switch off
the TV screen and should not have CRT spot within 3 sec.

1.3. Receive the channel 1 for monoscope pattern to check the picture focus and the round circle
should not be distorted. The centre position, and VOS line/size are within spec. Check the
brightness, contrast and colour condition. Check the convergence, picture must be clear, focus

Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0

OK and white balance are OK. Also check the complete screen picture quality. High voltage
condition OK and the Screen picture must be OK.

1.4. Check all the functional keys must be working well.

1.5. Receive colour pattern signal and the system colour. (PAL/SECAM/NTSC). Check the power
main on/off switch, brightness, volume, colour, contrast and tint. The picture quality must not
have colour noise, unbalance size and distorted condition.

1.6. Check the sound quality standards, Volume up/down are OK to spec, and sound output. Ensure
the sound output is not distorted and noisy. No interference for DK/BG/I/M.

1.7. Use remote Control Unit for all types of function check and ensure OK.

1.8. Check the words display condition.

1.9. Shock test and make sure the picture and sound are not distorted and shifted.

1.10. Use strong and weak signal to check the colour picture condition. After adjust the signal level to
35-40 dB and the colour should not gone. The picture and sound must be OK. At 60 dB the
picture should not have snow noise.

1.11. Ensure the factory mode setting are set. Set-off the factory mode function and last switch off the
TV set.

1.12. All the “NG” sets must send for repairing and recording for reference.

1.13. Check the AV input and output the picture and sound must be OK.

2. RELIABILITY AGING TEST:-

1st lot of production sets. Sampling 20 sets for aging 7 days continues test with colour signal in. Normal
production sets must be age for 1 day.

3. MECHANICAL INSPECTION:-

3.1. Inspect all glue are firmly placed.

3.2. Check all screws are tightened, no missing and loose.

3.3. Check all the connectors are fully located onto the chassis base.

3.4. Check all the safety components are firmly located onto the chassis and no damage.

3.5. The TV internal side should not see any excess metal materials.

3.6. Check all the cable and wire are OK in-used.

3.7. Check the FBT and switching transformers not high mounting. The big capacitor are not slanting
and high mounting.

4. HIGH POTENTIAL TESTING:-

4.1. Set the mega-meter is set in position.(Insulation tester)

4.2. Set the meter to DC500V.

4.3. Use the meter probe onto the tuner body and the power cord on connector socket.

4.4. Switch on the button and test the insulation performance and the reading at 2/3 position.

4.5. Insulation spec must over 9.0 Mohm. if not reject.

4.6. Note: Everyday work check the high pot. Condition as 3100V, 10 mA, 5 sec are OK.

5. SAFETY CHECK:-

5.1. High voltage checking. Use high pot tester and set the tester to 3100V, 10mA and ensure the
AC/DC switch is in AC position. Set the tester to 10mA and timer to 5 sec. Test all naked metal
of the TV and ensure no arcing and sparking.

5.2. Checking methods.

5.2.1. Connect the power cord into power socket.

5.2.2. The high pot tester gun pointed at metal part of TV set body.

5.2.3. Switch on the switch to test the high electric power.

5.2.4. Connect with high voltage within 5 second and remove the tester gun point.

Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0

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Appendix: If customer logo is needed, please set LOGO ON 1 and CUS.LOGO (or CUSTOM LOGO) 1
at the SERVICE MODE. Change the data of E2prom to get the custom logo with special implement (
I2C converter Board and Computer). Please see the details as following.

Method to Write Data for Custom Logo

The are total 12 characters that can be input into E2prom and display on the TV. The address range of
E2prom (24C04) is from 170H-17BH. The following table shows the code input character.

Character Data Code Character Data Code
'0' 30H 'K' 4BH
'1' 31H 'L' 4CH
'2' 32H 'M' 4DH
'3' 33H 'N' 4EH
'4' 34H 'O' 4FH
'5' 35H 'P' 50H
'6' 36H 'Q' 51H
'7' 37H 'R' 52H
'8' 38H 'S' 53H
'9' 39H 'T' 54H
'A' 41H 'U' 55H
'B' 42H 'V' 56H
'C' 43H 'W' 57H
'D' 44H 'X' 58H
'E' 45H 'Y' 59H
'F' 46H 'Z' 5AH
'G' 47H '/' 2FH
'H' 48H '.' 2EH
'I' 49H '*' 40H
'J' 4AH ' ' 09H

Model No: CT -21DS9A_21DS9CP_21DS9CP(IKD)_21DS9CP(SKD)_21DS9N_21DS9R
Version 1.0