Circuit Adjustments; A Board Adjustment - Sony trinitron PVM-1450QM Service Manual

5-1. A BOARD ADJUSTMENT
A BOARD - COMPONENT SIDE -
20
11
.__ _ __.I
/Cl 04
10
0
TP306
48
SECTION 5
CIRCUIT ADJUSTMENTS
0
TP401
25
0
TP300
CN401
8
0
TP402
PVM-1450QM/1454QM
1 6
C:=JcN503
22 12
'-----'' /C507
11
~
RV501
'1l7
I
H. BLK
I
H. CENTER
24
'----'' CN505
3
0
TP307
32 17
/C305
16
A BOARD - CONDUCTOR SIDE -
,
0
TP305
0
TP301
C[J
D516
A K
-31-
16
16 9
LJ,cso?
1 8
9
I
/C503
8
E B
Q363~
C
PVM-1450QM/1454QM
· I
I. Preparations
I
*
When composite video or component signals are supplied from connector CN301, they must be supplied taking into account the effect of
the Q board as indicated on the right.
The levels of the signals supplied must be within
+
2% of the standard on the right.
Signal Signal Contents
Standard Level
(Pedestal-White)
100%WHITE
0.714V
358NT
75%WHITE
0.536V
443NT BURST
COMPOSITE
(GREEN)
286mV (632mV)
(This item only P-P)
VIDEO
(75% COWR BAR)
!00%WHITE 0.7V
PAL
75%WHITE 0.525V
SECAM PAL BURST
(GREEN) 300mV (664mV)
(This item only P-P)
100%WHITEY 0.7V
75%WHITEY 0.525V
BETA0
75%COLOR
B-Y,R-Y 0.7V
COMPONENT
(This item only P-P)
(75% COLOR BAR)
100%WHITEY
0.7V
75%WHITEY 0.525V
SMPTE
75%COLOR
B-Y,R-Y 0.525V
(This item only P-P)
*
The function or input can be selected by writing the
corresponding data from the table below into microcomputer
(ICl0l) RAM address 0006h.
BIT FUNCTION DATA
0-3 LINEA/RGB 1
LINE B/COMPONENT 2
LINEC/SDI 3
LINE/RGB
4
EXT SYNC 5
DEGAUSS 6
BLUEONLY 7
UNDER SCAN 8
HNDELAY 9
16: 9 10
4-7
MENU 1
SELECT 2
UP 3
DOWN 4
*
In this document, terms inside boxes
._I __ __.I
are names of
service mode adjustments.
Example j60H-FREQI
*
CONT 80% is the center click position for the user control.
- 32-
Reduction
Ratio
93%
93%
94% (94%)
94%
94%
94% (94%)
94.8%
94.8%
94.8%
94.8%
94.8%
94.8%
Connector Feed Level
(Pedestal-White)
0.664V
0.498V
269mV (594mV)
0.651V
0.488V
282mV (624mV)
0.664V
0.498V
0.664V
0.664V
0.498V
0.498V