AV-25A8
No. 51389B
1
MODEL NO.
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SERIAL No.
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Model name
SERVICE MANUAL
COLOUR TELEVISION
AV-25A8(BK)
AV-25A8
COPYRIGHT
© 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 51389B
Nov. 2000
HOW TO IDENTIFY MODEL
While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
This service manual mainly consists of the following items:
· The items which differ from those for the AV-A2580(BK) service manual.
· The initial value for each setting item.
For details other than those described in this manual, please refer to the following service manual.
Reference Service Manual: AV-A2580(BK) Service Manual (No. 51389, May 1998)
Note: The page in parentheses shows the one for the AV-A2580(BK) service manual (No. 51389, May 1998).
AV-25A8
BASIC CHASSIS
CL
AV-25A8
No. 51389B
2
AV-A2580(BK)
AV-25A8(BK)
!
!
!
!
!
REF. NO.
PART NAME
DESCRIPTION
PART No.
PART No.
s EXPLODED VIEW PARTS LIST (Page 28)
!
8
CM22960-036-H
CM22960-081-H
RATING LABEL
21
CM12472-00L-H
CM12472-00P-H
FRONT CABI ASSY
s PACKING PARTS LIST (Page 35)
1
CP11434-027-H
CP11434-064-H
PACKING CASE
!
7
LCT0185-001A-H
LCT0185-001B-H
INST BOOK
PARTS DIFFERENCE TABLE
The different parts between AV-A2580(BK) and AV-25A8(BK) are described below:
AV-25A8
No. 51389B
3
Item
Content
Dimensions (W
× H × D)
57.1cm
× 51.5cm × 49.5cm
Mass
26.5kg
TV RF System
B / G, I, D / K, K1 / M
Colour System
PAL / SECAM / NTSC3.58 / NTSC4.43
Sound-multiplex System
Bilingual sound in A2 stereo
(Stereo sound in A2 stereo is not available. Stereo sound is available only in playback.)
Receiving Frequency
VHF (VL)
46.25MHz ~ 168.25MHz
VHF (VH)
175.25MHz ~ 463.25MHz
UHF
471.25MHz ~ 863.25MHz
CATV
q Cable TVs of Mid (X~Z, S1~S10)
Super (S11~S20) & Hyper (S21~S41) bands receivable
Intermediate
VIF Carrier
38.0MHz
Frequency
SIF Carrier
32.5MHz (5.5MHz), 31.5MHz (6.5MHz)
33.5MHz (4.5MHz), 32.0MHz (6.0MHz)
Colour Sub Carrier Frequency
PAL (4.43MHz), SECAM (4.40625MHz / 4.25MHz)
NTSC (3.58MHz / 4.43MHz)
Aerial Input Terminal
75
Unbalanced
Power Input
Rated voltage
AC120 ~ 240V, 50 / 60Hz
Operating voltage
AC90 ~ 260V, 50 / 60Hz
Power Consumption
112W (Max.) / 78W (Avg.)
Picture Tube
Visible size : 59cm measured diagonally
High Voltage
28kV
± 1kV (at zero beam current)
Speaker
5cm
× 12 cm Oval type × 2
Audio Output
5W + 5W
Input
Video
1Vp-p, 75
Audio (L/R)
500mVrms (
-4dBs), High impedance
Output
Video
1Vp-p, 75
Audio (L/R)
500mVrms (4dBs), Low impedance
Remote Control Unit
RM-C567-1H (Battery size : AA/R06/UM-3
× 2)
Design & specifications are subject to change without notice.
SPECIFICATIONS (Page 2)
AV-25A8
No. 51389B
4
SETTING OF SYSTEM CONSTANT SET (Page 9)
Table 1
USER SETTING VALUES (Page 9)
Table 2
SPECIFIC SERVICE INSTRUCTIONS
Setting item
Setting value
Setting item
Setting value
SUB POWER
ON
LIVE SPATIAL
OFF
CHANNEL
1 POSITION
OFF TIMER
OFF
PICTURE MODE (VSM)
BRIGHT
BILINGUAL MODE
I
VOLUME
Appropriate sound volume
TREBLE / BASS / BALANCE
CENTER
TV/VIDEO
TV
VNR
OFF
ON SCREEN DISPLAY
POSITION NUMBER DISPLAY
BLUE BACK
NO
COLOUR SYSTEM
PAL
LANGUAGE
THAI
SOUND SYSTEM
B/G
Refer to OPERATING
INSTRUCTIONS
CHANNEL PRESET
Setting item
Setting contents
Setting value
1.
INCH
25
2.
COLOUR
MULTI
3.
VIDEO INPUT
1
4.
ECO SENSOR
NO
5.
SUPER BASS
NO
6.
SPATIALIZER
YES
7.
VOL. LIMITER
YES
8.
BLUE BACK
NO
9.
TEXT
NO
10. LANGUAGE
E/T
14
21
25
29
MULTI
TRIPLE
PAL
13
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
E
E/T
AV-25A8
No. 51389B
5
Colour system
Variable
Initial setting value
Setting item
range
PAL
SECAM
NTSC 3.58
NTSC 4.43
1. CUT OFF (R / G / B)
-128 ~ +127
0
bbb
2. DRIVE (R / B)
-128 ~ +127
0
bbb
3. BRIGHT
-64 ~ +64
-11
bbb
4. CONT.
-58 ~ +28
-10
bbb
5. COLOUR
-60 ~ +67
+7
+11
+12
-2
6. TINT
TV / VIDEO
-48 ~ +79
+5 / 0
0 / 0
7. BLACK OFFSET (R-Y / B-Y)
-8 ~ +7
0 / 0
bbb
8. SHARP
-05 / +03
TV / VIDEO
-32 ~
+31
bbb
(Do Not Adj.)
(Fixed)
9. TEXT (RGB) CONT.
+15
-128 ~ +47
bbb
(Do Not Adj.)
(Fixed)
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
10. H. CENTER
-16 ~ +15
-10
-10
bb
-10
-10
bb
11. V. HEIGHT
-64 ~ +63
-15
-15
bb
0
0
bb
12. V. LIN (Do Not Adj.)
-16 ~ +15
0
0
bb
0
0
bb
(Fixed)
(Fixed)
(Fixed)
(Fixed)
13. V. S-CR (Do Not Adj.)
-64 ~ +63
-15
-15
bb
0
0
bb
(Fixed)
(Fixed)
(Fixed)
(Fixed)
14. V. CENTER (Fixed)
0
0
bb
0
0
bb
(Fixed)
(Fixed)
(Fixed)
(Fixed)
SERVICE ADJUSTMENTS
s Initial Setting Value
s IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 16)
Variable
Initial setting
range
value
Setting (adjustment) item
DELAY POINT
(AGC TAKE-OVER)
0 ~ 63
20
Adjustment of SUB COLOUR-II (Page 20)
Adjustment of SUB TINT-II (Page 21)
s V/C (VIDEO/CHROMA) CIRCUIT/DEF. CIRCUIT ADJUSTMENT (Page 16)
Adjustment part
Description
6. TINT
NTSC 3.58 TINT
Value (B) in the figure: Set to +5V (W & Cy).
Adjustment part
Description
5. COLOUR
PAL COLOUR
Value (A) in the figure: Set to +6V (W & G).
SECAM COLOUR
Value (A) in the figure: Set to +6V (W & G).
NTSC 3.58 COLOUR
Value (A) in the figure: Set to +8V (W & G).