Panasonic AP380 Instrukcja serwisowa - Strona 10

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1. Receivers Feature Table

Chassis Service Adjustment Procedures

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

associated components are replaced.

Note:

Connect the (-) lead of the voltmeter to the appropriate ground. Use IC803's heat sink when the HOT ground

symbol ( ) is used. Otherwise, use COLD ground (

Figure 4.

A-Board Main

Components and

Test Points

MOMENTARILY CONNECT A JUMPER FOR ENTERING SERVICE MODE (FA1 to FA2 )

132.0V B+ Voltage Confirmation

1. Set the Bright and the Picture to Minimum by

using the Picture Menu.

2. Connect the DVM between C809(+ side) and cold

ground (

3. Confirm that B+ voltage is 132.0V ± 2.5V. This

voltage supplies B+ to the Horizontal Output &

Flyback circuits.

Source Voltage Chart

120V AC line input. Set the Bright and the Picture to

Minimum by using the Picture Menu. Use cold ground

(

) for the (-) lead of the DVM.

LOCATION

TPD8

TPD9

C552 (+) side

IC551 Pin3

D554 Cathode

C572 (+) side

) — Tuner shield, IC451's heat sink or FA2.

IC6501

IC551

C572

IC001

IC2302

IC101

VOLTAGE

24.0V ± 2V

13.0V ± 2V

8.0V ± 1V

9.0V ± 0.5V

200V ± 15V

5.0V ± 0.25V

A-BOARD

IC451

C809

IC803

TPD8

C552

Adjust Picture Menu for normalized video adjustments.

High Voltage Check

1. Select an active TV channel and confirm that

horizontal is in sync.

2. Adjust Brightness and Picture using Picture Icon

menu so video just disappears.

3. Confirm B+ 131V is within limit.

4. Using a high voltage meter confirm that the High

Voltage is 27.7kV ± 1.25kV.

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TPD9

Q551