Panasonic CT-32HC14J 서비스 매뉴얼 - 페이지 4

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12 Chassis service adjustment procedures

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All service adjustments are factory preset and should not require adjustment unless controls and/or

associated components are replaced.

140.0_V B+ voltage check

1. Set the BRIGHT and PICTURE to minimum by using the PICTURE menu.

2. Connect the DVM on TPD144 (D-Board by D2 connector) and cold ground

3. Confirm that B+ voltage is 144.0V ± 1.5V. This voltage supplies B+ to the horizontal output

and flyback circuits.

Source voltage chart

120V AC line input. Set the BRIGHT and the PICTURE to minimum by using the PICTURE menu.

Use cold or hot ground for the (-) lead of the DVM as needed

A-BOARD

STBY 7V (BY IC804) A-Board TPP9

MAIN 9V (BY IC875) A-Board TPA7

MAIN 5V (BY IC871) A-Board TPA8

GC 2.5V (BY IC872) A-Board TPA9

STBY 3.3V (BY A1 CONNECTOR) A-Board TPA16 3.3V ± 0.2V

D-BOARD

+B2 (BY D2 CONNECTOR) D-Board TPD144

25V (BY D40 CONNECTOR) D-Board TPD250

15V (BY D4 CONNECTOR) D-Board TPD150

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VOLTAGE

7.5 ± 0.6V

9.0V ± 0.5V

5.0V ± 0.3V

2.5V ± 0.2

VOLTAGE

144.0 ± 1.5V

27.5 ± 2.0V

15.7 ± 1.5V