Circuit Adjustments - Sanyo PLV-55WHD1 Service Manual

● 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.
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, color bar pat-
Component video signal ...... 0.7Vp-p/75Ω terminated, color bar pat-
RF Audio signal .................... 1KHz 100% modulation signal and
● Picture setup menu .................. Before the electrical adjustments from step [ 6 ] to step [ 11 ], the picture
z
Output voltage adjustment
Equipment
1. Adjust the voltage by using
board as following.
Test Point AC Input
(+) 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. HOT CIRCUIT!
Note:
The Power Board for replacing is already adjusted in a
factory, so it is not required to perform this readjust-
ment.
tern, 16 steps gray scale pattern, and
100%/50% white pattern (Composite
video signal)
tern (480i format)
multi stereo signal
setup menu should be set as follows;
Main menu > Picture setup menu >
Picture --- Auto
Digital voltmeter
VR621
on the power
Reading
White 100%
x
Fan minimum voltage adjustment
Equipment
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
1 FN901
2 FN903/4
3 FN902
Note:
The location of each fan is refer to P.90.
-73-
Electrical Adjustments
16 steps gray scale pattern
Black 100%
Digital voltmeter
8.0
TPFAN1 ±0.05Vdc
8.0
TPFAN2 ±0.05Vdc
8.0
TPFAN3 ±0.05Vdc
8.0
TPFAN4 ±0.05Vdc