A Board Adjustments - Sony TRINITRON KV-20FV10 Service Manual

KV-20FV10/21FV10/21FV10C/25FV10A
NO. ITEM
62 HOSC H VCO OSCILLATION FREQ
63 VSS V SYNC SLICE LEVEL
64 HSS H SYNC SLICE LEVEL
65 HMSK
66 VTMS SELECT SIGNAL VTIM PIN
67 CDMD V CNT DWN MODE SWITCHING
68 AFC AFC LOOP GAIN SWITCHING
69 FIFR FIELD FREQUENCY
70 SBAL SUB BALANCE
71 SBAS SUB BASS
72 STRE SUB TREBLE
73 BBEL BBE LOW
74 BBEH BBE HIGH
75 SRND SURROUND
76 BBE BBE ON/OFF
77 DISP O.S.D DISPLAY POSITION
78 TROT TILT CORRECTION
79 HCLW HORIZONTAL COUNT LOWER LIMIT
80 HCHG HORIZONTAL COUNT HIGH LIMIT
81 ABL0
82 ABL1
83 SYSC COLOR SYSTEM
84 VENH VERTICAL ENHANCEMENT
85 CBPC
86 BYCF
87 KILC
88 LDOT
89 CORE
90 ID0
91 ID1
92 ID2
93 ID3
94 ID4
95 ID5
96 ID6
Notes:
No. 1–96 show the order that each adjustment mode may be selected while in service mode.
Data Range shows the range of possible settings for each adjustment mode.
Initial Data shows the standard settings for each adjustment mode.
Feature ID Map
MODEL DEST.
KV-20FV10 US
KV-20FV10 CND
KV-21FV10 E
KV-21FV10C E
KV-25FV10A E

5-4. A BOARD ADJUSTMENTS

H. Frequency (Free Run) Check
1. Input a TV mode (RF) with no signal.
2. Connect a frequency counter to base of Q501
(TP-500 H. DRIVE).
FUNCTION
ID-0 ID-1 ID-2 ID-3 ID-4 ID-5
89 19 141 11 219 0
89 19 141 43 219 0
17 19 141 83 251 0
17 19 141 83 251 0
151 19 173 67 251 0
INITIAL DATA
PALM/
NTSC PALN
DATA
RANGE 20" 25"
0-15 7
0, 1 1 0
0, 1 0
0, 1 0
0-3 0
0-3 0
0-3 0
0-3 3
0-15 7
0-15 9
0-15 9
0-15 12
0-15 9
0-63 13
0, 1 1
0-63 22 5
0-63 31
0-127 16
0-127 64
0, 1 0
0-7 0
0-7 6
0-7 4 Palette mode controls this register
0, 1 0
0, 1 0
0, 1 0
0, 1 0
0, 1 0
0-255 201
0-255 19
0-255 173
0-255 43
0-255 251
0-255 0
0-255 64
3. Check H. Frequency for 15735 ± 200 Hz.
15650 ± 200Hz (KV-25FV10A ONLY).
ID-6
64
V. Frequency (Free Run) Check
64
1. Select video 1 with no signal input.
64
2. Set the conditions for a standard setting.
64
3. Connect the frequency counter on the A board to TP-508
64
(V OUT) or CN 501 pin
4. Check that V. Frequency shows 60 ± 4 Hz.
50 ± 4Hz (KV-25FV10A ONLY).
Sub Contrast Adjustment (RDRV)
1. Input a color-bar signal and set the level to 75%.
2. In Standard mode, set PICTURE to maximum, COLOR to
minimum, and BRIGHTNESS to center.
— 24 —
VIDEO
AVERAGE
20" 25" DATA
7
0
0
0
0
3 0
0 0
1 3
7
9
9
12
9
13
1
15
31
16 16
64 64
1
7
6
4
0
0
0
0
0
See ID Map
See ID Map
See ID Map
See ID Map
See ID Map
See ID Map
See ID Map
SERVICE ID0 25
(V DY+) and ground.