User Manual

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● Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfor-
mance and product safety.
Note: Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting
the service data.
Equipment Digital voltmeter
1. Enter the service mode.
2. Change data values of each test points to adjust the
fan minimum output voltage.
Item no
. Fan Location Test Point Adjustment value
0 FN905/6 TPFAN1 8.0 ±0.05Vdc
1 FN901 TPFAN2 8.0 ±0.05Vdc
2 FN903/4 TPFAN3 8.0 ±0.05Vdc
3 FN902 TPFAN4 8.0 ±0.05Vdc
Note:
The location of each fan is refer to P.90.
x Fan minimum voltage adjustment
Equipment Digital voltmeter
1. Adjust the voltage by using VR621 on the power
board as following.
Test Point AC Input Reading
(+) 1pin of K6A 120V . . . . . .355V ±2Vdc
(–) 3pin of K6A (or 230V . . . . .370V ±2Vdc)
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
"K6A" is in the primary circuit. HO
T CIRCUIT!
Note:
The Power Board for replacing is already adjusted in a
factory, so it is not required to perform this readjust-
ment.
z Output voltage adjustment
Electrical Adjustments
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, color bar pat-
tern, 16 steps gray scale pattern, and
100%/50% white pattern (Composite
video signal)
Component video signal ...... 0.7Vp-p/75Ω terminated, color bar pat-
tern (480i format)
RF Audio signal .................... 1KHz 100% modulation signal and
multi stereo signal
● Picture setup menu .................. Before the electrical adjustments from step [ 6 ] to step [ 11 ], the picture
setup menu should be set as follows;
Main menu > Picture setup menu >
Picture --- Auto
White 100%
Black 100%
16 steps gray scale pattern