Circuit Adjustments - Sanyo PLV-80 Service Manual

Electrical Adjustments

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.
WARNING : USE UV RADIATION EYE AND SKIN
CAUTION:
To prevent suffer of UV radiation, those adjustments
must be completed within 25 minutes.
[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
RGB Video signal .................. 0.7Vp-p/75Ω terminated, 16 steps gray
● Picture control mode ............... "STANDARD" mode unless otherwise noted.
Note:
* Please refer to "Service Adjustment Menu Operation" for entering to the service mode and adjusting the service
data.
z
Output Voltage adjustment
After replacing the Power Board readjust the Output
voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of
K6A
.
2. Adjust the voltage by using
AC Input
230V
* This adjustment is not required even if the power
Caution: board is replaced because this adjustment is carried
Be sure to connect the lamp when taking this adjust- out before parts shipment.
ment.
PROTECTION DURING SERVICING.
scale, white 100% and black 0% pat-
tern (Composite video signal)
scale pattern (WXGA)
scale, white 100% and black 0% pat-
tern (480i format)
scale, white 100% and black 0% pat-
tern (480p format)
VR601
as following.
Reading
370V ±2V
White 100%
Fan Voltages adjustment
x
1. Enter the service mode.
2. Connect a digital voltmeter to test point
chassis ground (-). (6 test points are provided for this
adjustment, perform all the voltage adjustments in
the table below.)
140
3. Select group no. "
data value to adjust the voltage to be
D
select item no.
E
the voltage to be
4. Repeat step 2 to 3 for the remaining test points in
the table below.
Test Point A Item B
TPFN3 0
TPFN7 2
TPFN6 4
TPFN4 6
FAN1 8
FAN2 10
-24-
16 steps gray scale pattern
Black 100%
A
B
". Select item no. and change
C
±0.05V, and
and change data value to adjust
±0.05V.
Voltage C Item D Voltage E
14.0 1
14.0 3
14.0 5
14.0 7
14.0 9
14.0 11
(+) and
6.5
5.0
5.0
5.0
5.0
5.0