Entering Service Mode; To Check Purity; Helpful Hints - Panasonic CT-20R6E Service Manual

To Check Purity:

In Service mode (red "CHK" is displayed), place a jumper in AG connector, press the Recall Button on the Remote
Control to enter to the White purity field check, remove the jumper, press Recall again to get to Red, Green and
Blue purity fields (If jumper is not removed for color fields, they will be displayed with higher luminosity),
In Aging mode ( factory mode , yellow "CHK" is displayed), connect a jumper in AG connector, press the Recall
Button on the Remote Control to enter the Purity Field Check Mode.
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 costumer controls are set to nominal level).
NORMAL
SCREEN
Press Recall again to select desired field.
BLUE GRN.
SCREEN SCREEN
Figure 21. Purity Check Field Mode.

Helpful Hints

IMPORTANT NOTE:
Always Exit the Service Mode
Following Adjustments.
- 24 -
RED WHITE
SCREEN SCREEN
) FA2 (TP3) A-Board.