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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.
service button
A
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
Item
RF-BRT
RF-CNT
RF-CLR-R
RF-CLR-B
RF-TNT
RF-SHR
V-BRT
V-CNT
V-CLR-R
V-CLR-B
V-TNT
V-SHR
S-BRT
S-CNT
S-CLR-R
Fig. 1
S-CLR-B
S-TNT
S-SHR
D1-BRT
D1-CNT
D1-CLR-R
D1-CLR-B
D1-TNT
D1-SHR
6-1
Button
Data
(on the service
Value
remote control)
127
190
75
[SETUP] → [1]
75
128
112
127
190
70
[SETUP] → [2]
70
128
112
125
190
65
[SETUP] → [3]
80
128
112
127
170
70
[SETUP] → [4]
70
128
112
A7440EA
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