akira CT-21DS9A Service Manual Download Page 7

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

(A) MAIN CHASSIS ALIGNMENT

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

Ic302

20V

L108

L203

D608

IC 203

Summary of Contents for CT-21DS9A

Page 1: ...C C Co o ol l lo o ou u ur r r T T TV V V S S Se e er r rv v vi i ic c ce e e M M Ma a an n nu u ua a al l l...

Page 2: ...S9CP IKD _21DS9CP SKD _21DS9N_21DS9R Version 1 0 2 M M Mo o od d de e el l l G G Gr r ro o ou u up p p C C CT T T 2 2 21 1 1D D DS S S9 9 9 CHASSIS 3Y01 MODEL CT 21DS9A CT 21DS9CP CT 21DS9CP IKD CT 21...

Page 3: ...1DS9A_21DS9CP_21DS9CP IKD _21DS9CP SKD _21DS9N_21DS9R Version 1 0 3 CONTENTS Specifications 4 X Ray Radiation Precaution 5 Safety Precaution 5 Product Safety Notice 5 Alignment Instructions 6 Schemati...

Page 4: ...TSC P B CP PAL NTSC P B Picture Tube 54 cm 21 diagonal Ext Antenna 75 Ohm Coaxial Cable Ext In Out Audio Video in out Speakers 8W x 2 Volts A AC 100 260V 50 60Hz R N CP AC 150 260V 50 60Hz Power Consu...

Page 5: ...sed during any dynamic service to avoid possible shock hazard 2 Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube The picture tube is highly evacua...

Page 6: ...n 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 Gener...

Page 7: ...s 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 ne...

Page 8: ...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...

Page 9: ...N 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 ke...

Page 10: ...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 a...

Page 11: ...gn 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...

Page 12: ...roduction 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 Ch...

Page 13: ...tails as following Method to Write Data for Custom Logo The are total 12 characters that can be input into E 2 prom and display on the TV The address range of E2 prom 24C04 is from 170H 17BH The follo...

Page 14: ...Chassis 3Y01 150V 260V...

Page 15: ...Chassis 3Y01 90V 260V...