1-6-1
T5515EA
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. NTSC Pattern Generator (Color Bar W/White
Window, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)
2. AC Milli Voltmeter (RMS)
3. Alignment Tape (VFMS0001H6), Blank Tape
4. DC Voltmeter
5. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50 V/Div,
F-Range: DC~AC-60 MHz
6. Frequency Counter
7. Plastic Tip Driver
8. Color Analyzer
How to make service remote control
unit:
1. Prepare normal remote control unit. (Part No.
NE001UD)
Remove 4 screws from the back lid. (Fig. 1-1)
Short circuit pins 11 and 20 of the microprocessor
with a jumper wire.
Note:
The remote control with the unit cannot be
used as service remote control unit.
How to Set Up the Service mode:
Service mode:
1. Use the service remote control unit.
2. Turn the power on at the unit.
3. Press [SLEEP/WAKE UP] button on the service
remote control unit.
1. DC 105V (+B) Adjustment
Purpose:
To obtain correct operation.
Symptom of Misadjustment:
The picture is dark and
unit does not operate correctly.
Note:
D613 CB), C613(-)(GND),
VR601 --- Main CBA
1. Connect the unit to AC power outlet.
2. Connect DC Volt Meter to D613 CB) and
C613(-)(GND).
3. Adjust VR601 so that the voltage of D613
CB) b105
±
0.5 V DC.
2. Initial Setting
General
1. Enter the Service mode. (See page 1-6-1.)
2. Press [VOL
p
] button on the service remote
control unit. Display changes “C/D,” “7F,” “FM,”
“ACCESS CODE,” “9V,” and “RC5” cyclically when
[VOL
p
] button is pressed.
3. To set each data value shown below, press [CH
o
/
p
] buttons on the service remote control unit.
7F --- Set to “FF.”
FM --- Set to “OFF.”
ACCESS CODE --- Set to “OFF.”
9V --- Set to “OFF.”
RC5 --- Set to “OFF.”
Note:
C/D
data value does not need to be adjusted
at this moment.
Fig. 1-1
Screws
Remote control unit (bottom)
Test Point
Adj. Point
D613 CB)
C613(-)(GND)
VR601
M. EQ.
Spec.
DC Voltmeter
Plastic Tip Driver
+105
±
0.5 V DC
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