Circuit Adjustments - Sanyo PLV-55WR1Z Service Manual

Electrical Adjustments
● Circuit Adjustments ● Ci
i rcui Adjustm m ents
CAUT CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow- ON: T
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of per-
formance and product safety.
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray
Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray
Component Video signal ........ 0.7Vp-p/75Ω terminated, 16 steps gray
● Picture control mode ................ "STANDARD" mode unless otherwise
Note:
* Please refer to "Service Adjustment Menu Operation" for entering to the service mode and adjusting the service
data.
z
Ou Output Voltage adjustment Ou u t utp p p p u u oltag g g e ge ge a a a
Equipment
1. Adjust the voltage by using
board as following.
AC Input Test Point
230V (+) 1pin of K6A
(–) 3pin of K6A
or 120V
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
the factory, so it is not required to perform this readjust-
ment.
scale pattern (Composite video signal)
scale, 1 line dot pattern (720p format)
scale pattern (720p format and 1080i
format)
noted.
d d ju u st ustmen n t
Digital voltmeter
VR621
on the power
Reading
370 ±2Vdc
356 ±2Vdc
White 100%
x x x x x
F Fan minimum voltage adjustment n mi m m m m m nim n nim mu m
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
100 FN901
101 FN902
102 FN903/4
Note:
The location of each fan is refer to the parts list.
c
TV IF VCO adjustment
Equipment
Input mode
Input signal
1. Receive a TV signal with TV mode and tune the
receiver to a clear station.
2. Adjust the voltage by using
Test T T Test Point Point
(+) T (+) TP-VCO P-VCO O
(–) TP-G1 ) T G1
- 64 -
16 steps gray scale pattern
Black 100%
vo olt ag e dju dju ust st t me m me e e n n t
Digital voltmeter
Test Point Adjustment value
3.5
TPFAN1 ±0.1Vdc
3.5
TPFAN2 ±0.1Vdc
3.5
TPFAN3 ±0.1Vdc
Digital voltmeter
TV mode
Clear station
T202
on the tuner board.
Adjustment value j
3.5 3 5
±0.1Vdc ±0.1Vdc