Panasonic AP364 서비스 매뉴얼 - 페이지 18

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페이지 인쇄

To Check Purity:

When Receiver is in Service Mode (red "CHK" is

displayed), place a jumper in the AG connector

between the terminals (shorting FB signal to ground).

Press the Recall Button on the Remote Control to enter

the White Purity Field Check Mode. Remove the

jumper from the AG connector and press Recall

repeatedly to toggle the Receiver into the Red/Green/

Blue Purity Field Check Modes.

Helpful Hints

Entering Service Mode (Back-Open Method)

1. While the Receiver is ON and operating in Normal Mode, momentarily

short test point FA1 (TP8) to Cold Ground (

The Receiver enters the Aging Mode .

Yellow letters "CHK" appear in the upper left corner of the CRT.

(The Volume Up/Down will adjust rapidly).

2. Simultaneously press the Action and the Volume Up buttons on the

Receiver Control Panel.

The Receiver enters the Service Mode.

The letter in "CHK" turn red.

(The Volume Up/Down will adjust normally).

(All customer controls are set to nominal level).

Always Exit the Service Mode

Following Adjustments.

Other Adjustment

Press Recall again to select desired field.

BLUE

GRN.

SCREEN

Figure 15. Purity Check Field Mode.

IMPORTANT

AFCT

AFCB

AFCC

CLOCK

TO B ITEMS

Note: if jumper is not removed, colors will be displayed

at high luminosity.

In Aging Mode (factory mode, yellow "CHK" is

displayed), place a jumper in the AG connector

between the terminals. Press Recall on the Remote

Control to enter the Purity Field Check Mode.

NORMAL

SCREEN

RED

WHITE

SCREEN

) FA2 (TP3) A-Board.

Note: Only applicable settings for

the Receiver serviced will be

available.

- 18 -

Default

Level

128