6-1 A7440EA
ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: “CBA” is abbreviation for
“Circuit Board Assembly.”
Note: Electrical adjustments are required after
replacing circuit components and certain
mechanical parts. It is important to perform
these adjustments only after all repairs and
replacements have been completed.
Also, do not attempt these adjustments unless
the proper equipment is available.
Test Equipment Required
1. DC Voltmeter
2. NTSC Pattern Generator (Color Bar W/White
Window, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)
3. Remote control unit
4. Color Analyzer
How to make the Service remote
control unit:
Cut “A” portion of the attached remote control unit as
shown in Fig. 1.
How to set up the service mode:
Service mode:
1. Use the service remote control unit.
2. Turn the power on. (Use main power on the TV
unit.)
3. Press the service button on the service remote
control unit as shown in Fig. 1.
1. Initial Setting
General: Enter the Service mode. (See page 6-1.)
Set the each initial data as shown on table 1 below.
Table 1: Initial Data
Fig. 1
service button
A
Item
Button
(on the service
remote control)
Data
Value
RF-BRT
[SETUP] → [1]
127
RF-CNT 190
RF-CLR-R 75
RF-CLR-B 75
RF-TNT 128
RF-SHR 112
V-BRT
[SETUP] → [2]
127
V-CNT 190
V-CLR-R 70
V-CLR-B 70
V-TNT 128
V-SHR 112
S-BRT
[SETUP] → [3]
125
S-CNT 190
S-CLR-R 65
S-CLR-B 80
S-TNT 128
S-SHR 112
D1-BRT
[SETUP] → [4]
127
D1-CNT 170
D1-CLR-R 70
D1-CLR-B 70
D1-TNT 128
D1-SHR 112
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