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SERVICE MANUAL
C C C C A A A A U U U U T T T T I I I I O O O O N N N N
Before serving the chassis, read the "X-Ray Radiation Precaution",
"Safety Precaution" and "Product Safety | Notice" on page 2 of this manual.
Colour Television PAL/SECAM/BG/DK
Models:
14" CTV-37V10
(chasis 3401)
21" CTV-55V10
(chasis 4401)
RTV servis Horvat
Tel:
++385-31-856-637
Tel/fax: ++385-31-856-139
Mob:
098-788-319
www.rtv-horvat-dj.hr
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Table of Contents
Related Manuals for Quadro CTV-37V10
Summary of Contents for Quadro CTV-37V10
- Page 1 SERVICE MANUAL Colour Television PAL/SECAM/BG/DK Models: 14” CTV-37V10 (chasis 3401) 21” CTV-55V10 (chasis 4401) RTV servis Horvat Tel: ++385-31-856-637 Tel/fax: ++385-31-856-139 Mob: 098-788-319 www.rtv-horvat-dj.hr C C C C A A A A U U U U T T T T I I I I O O O O N N N N Before serving the chassis, read the "X-Ray Radiation Precaution",...
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Page 2: X-Ray Radiation Precaution
X-RAY RADIATION PRECAUTION Excessive high voltage can produce potentially hazardous X-Ray Radiation.' To avoid such hazards, the high voltage must not be above the specified limit. The normal value of the high voltage of this receiver is 24KV at zero beam current (minimum brightness) under 220V AC power source. The high voltage must not, under any circumstances, exceed 30KV. -
Page 3: Alignment Instruction
ALIGNMENT INSTRUCTION 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. - Page 4 CHASSIS ALIGNMENT 1. PIF Adjustment 1-1 Tuner AGC connects to GND. Pattern Generator outputs 38.9MHz R.F. signal and connects to tuner IF output terminal or pin 5 of saw filter. 1-2 Connect Digital voltmeter across C227. DC Regulated power supply positive terminal output +20V to pin 1 of IC302 and negative terminal of D608.
- Page 5 2-2 Apply +20V DC across IC302 as shown in FIG.2. 2-3 Adjust L108 to obtain waveform as following. There will be no alignment to it without NTSC system. 3. B+ adjustment 3-1 Disconnect horizontal load. Connect a light bulb (100 W) AC 250V across C321. 3-2 Connect 220V AC 50 Hz to CN601 and switch on power switch.
- Page 6 COMPLETE MACHINE GENERAL ADJUSTMENT 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.
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Page 7: Convergence Adjustment
COLOR PURITY ADJUSTMENT AND CONVERGENCE ADJUSTMENT COLOR PURITY ADJUSTMENT Before color purity adjustment, Warm up the TV set over 15 minutes and fully degauss. Receive pure white signal in AV status and set the TV receiver dynamic. 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. - Page 8 RTV servis Horv Tel: ++385-31-856-63 Tel/fax: ++385-31-856-13 Mob: 098-788-319 www.rtv-horvat-dj.h...
- Page 9 SERVISNI MENU ZA TV 55V10/37V10 shassis: 3Y/4Y01 MENU 1 MENU 4 V. SIZE 20 SUB_BRI 123 V. POS 33 OSD CONT 100 V. LINE 10 B. GAM SEL 0 V. SC 0 RG GAM DEF 0 H. PHASE 13 SCM B_Y DC 8 H.