To Check Purity; Helpful Hints - Panasonic CT-27D10B Service Manual

To Check Purity:

Press the Recall Button on the Remote Control when in Serviceman Mode (red "CHK" is displayed) to enter the
Purity Field Check Mode.
Entering Serviceman 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.
2. Simultaneously press the Action and the Volume Up buttons on the
Receiver Control Panel.
The Receiver enters the Serviceman Mode.
The letter in "CHK" turn red.
(The Volume Up/Down will adjust normally).
(All customer controls are set to nominal level).
Press Recall again to select desired field.
BLUE GRN.
SCREEN SCREEN
Figure 15. Purity Check Field Mode.

Helpful Hints

(The Volume Up/Down will adjust rapidly).
IMPORTANT NOTE:
Always Exit the Serviceman
Mode Following Adjustments.
NORMAL
SCREEN
RED WHITE
SCREEN SCREEN
) FA2 (TP3) A-Board.
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