JVC AV-25PSM Service Manual

AV-25PS
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
JK
AV-25PS(M)
This service manual mainly consists of the following items:
• The items which differ from those for the AV-25PS 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-25PS Service Manual (No. 51750, Jul. 2000)
AV-25PS
Note: The page in parentheses shows the one for the AV-25PS service manual (No. 51750, Jul. 2000).

HOW TO IDENTIFY MODEL

While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
Basic model name
AV-25PS
MODEL NO.
XXXXX XXXXXXX XXXXXXX XXXXX
XXXXXX
XXXXX
XXX XXXXX XXXXX
SERIAL No.
XXXX XX XXXX XXX XX XXXX
XXXXXX–XXX
Identify model name
AV-25PS-M
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56063 1
No. 56063 Sep. 2000
AV-25PS

PARTS DIFFERENCE TABLE

The different parts between AV-25PS and AV-25PS(M) are described below:
!!
! REF. NO. PART NAME DESCRIPTION
!!
AV-25PS AV-25PS(M) PART No. PART No.
EXPLODED VIEW PARTS LIST (Page 36)
! 10 QMP40D0-200J3 QMPR010-200-E2 POWER CORD
or QMP40D0-200J5 or QMPR010-200-K2
PACKING PARTS LIST (Page 47)
CM47385-00B-H POS/SERIAL LABEL — GG30014-008A-H POS UPC LABEL
! QAM0055-001 CONVERSION PLUG
No. 560632

SPECIFICATIONS (Page 2)

Item CONTENTS
Dimensions (W × H × D) 655mm × 530.5mm × 465mm Mass 36kg TV RF System B, G, I, D, K, K1, M Colour System PAL, SECAM, NTSC3.58, NTSC4.43 Stereo System A2 / NICAM (B/G, I, D/K) Teletext System FLOF (Fastext), WST (World standard system) Receiving Frequency VHF (L) 46.25MHz ~ 168.25MHz
VHF (H) 175.25MHz ~ 463.25MHz UHF 471.25MHz ~ 863.25MHz CATV Mid (X-Z, S1-S10), Super (S11-S20), Hyper (S21-S41) bands receivable
Intermediate Frequency
VIF Carrier 38.0MHz SIF Carrier 33.5MHz(4.5MHz), 32.5MHz(5.5MHz), 32.0MHz(6.0MHz), 31.5MHz(6.5MHz)
Colour Sub Carrier Frequency
PAL 4.43MHz SECAM 4.40625MHz, 4.25MHz
NTSC 3.58MHz / 4.43MHz Power Input AC110 ~ 240V, 50/60Hz Power Consumption 181W (Max.), 119W (Avg.) Picture Tube Visible size : 60cm measured diagonally High Voltage 31.0kV ±1.5kV (at zero beam current) Speaker & Audio Output Open dome speaker
10W+10W, 10cm round x 2
Video Audio Input terminals
Video1 S-Video Y: 1Vp-p Positive (Negative sync provided, when terminated with 75)
C: 0.286Vp-p (Burst signal, when terminated with 75)
Video 1Vp-p 75 (RCA pin jack)
Audio (L/R) 500mVrms (4dBs), High impedance (RCA pin jack) Video2 Video 1Vp-p 75 (RCA pin jack)
Audio (L/R) 500mVrms (–4dBs), High impedance (RCA pin jack) Video3 Video/Y Composite video 1Vp-p 75 (RCA pin jack)
Component video 1Vp-p 75 (RCA pin jack)
Cb Component video B-Y 0.7Vp-p 75 (RCA pin jack)
Cr Component video R-Y 0.7Vp-p 75 (RCA pin jack)
Audio (L/R) 500mVrms (–4dBs), High impedance (RCA pin jack) Video4 Video 1Vp-p 75 (RCA pin jack)
Audio (L/R) 500mVrms (4dBs), High impedance (RCA pin jack) Video Audio Output terminal
Video 1Vp-p 75 (RCA pin jack)
Audio (L/R) 500mVrms (4dBs), High impedance (RCA pin jack) Aerial Input Terminal 75 Unbalanced, Coaxial Headphone Jack Stereo mini jack (3.5ø) AV Compu Link terminal AV Compu Link II, mini jack (3.5ø) Remote Control Unit RM-C112 (AA/R06 / UM-3 dry battery × 2)
AV-25PS
Design & specifications are subject to change without notice.
No. 56063 3
AV-25PS

SPECIFIC SERVICE INSTRUCTIONS

SETTING OF SYSTEM CONSTANT SET (Page 9)
Table 1
CONTENTS VARIABLE RANGE INITIAL SETTING VALUE
COLOUR MULTI MSP YES SUPER BASS NO CENTER SPEAKER NO TEXT YES BLUE BACK MUTE NO VOLUME LIMIT YES COLOUR AUTO NO TILT YES C-TRAP 1 E.M.C. NO N/S WHITE BACK NO 7 LED SPEED 00
MULTI TRIPLE PAL YES NO YES NO YES NO YES NO YES NO YES NO YES NO YES NO 1 0 YES NO
YES NO 00 10 20 ... 1250
1270 1260
USER SETTING CONDITIONS (Page 9)
Table 2
PICTURE SETTING FEATURES
PICTURE MODE BRIGHT SLEEP TIMER OFF CONTRAST CENTER ON TIMER PR1 0:00 BRIGHT CENTER BLUE BACK ON SHARP CENTER CHILD LOCK OFF COLOUR CENTER CHANNEL GUARD -­TINT CENTER AUTO SHUT OFF OFF WHITE BALANCE COOL VIDEO-3 SETTING COMPONENT
PICTURE FEATURES INSTALL
A.A.C ON LANGUAGE ENGLISH AUTO VNR AUTO AUTO PROGRAM -­COLOUR SYSTEM TV: According to preset CH EDIT / MANUAL PRESET CH only
VIDEO: AUTO PAL Others: blank ZOOM REGULAR DEMO ECO SENSOR OFF DEMO OFF PICTURE TILT CENTER OTHERS
SOUND SETTING VOLUME Appropriate sound level SETERO / III CHANNEL PRESET Refer to Operating Instructions. BASS CENTER CHANNEL POSITION 1 POSITION TREBLE CENTER SUB POWER ON BALANCE CENTER ON SCREEN DISPLAY POSITION INDICATION AI VOLUME ON TV/VIDEO TV BBE ON SOUND SYSTEM B/G SPATIALIZER OFF
No. 560634

SERVICE ADJUSTMENTS

Initial Setting Value
SETTING OF VSM PRESET (Page 18)
[INITIAL SETTING VALUES OF VSM PRESET (SUB MENU 5. VSM PRESET)]
PICTURE MODE BRIGHT STANDARD SOFT ITEM
1. BRIGHT +0 +0 +0
2. CONT +17 +0 4
3. COLOR +0 +0 1
4. SHARP +0 +0 3
5. TINT +0 +0 +0
: Do not adjust.
AV-25PS
SETTING OF WHITE BALANCE PRESET (Page 19)
[SETTING OF WHITE BALANCE PRESET (SUB MENU 6. WB PRESET)]
WHITE BALANCE ITEM
1. R DRIVE 0 3 +26
2. B DRIVE 0 23 27
: Do not adjust.
COOL MID WARM
No. 56063 5
AV-25PS
VIDEO / CHROMA CIRCUIT ADJUSTMENT (Page 19)
CONTENTS PAL SECAM NTSC 3.58 NTSC 4.43
R 60
1. CUTOFF G 60
B 60
2. DRIVE R +0
B +0
3. BRIGHT TV 000—
VIDEO +1 4 2—
COMPONENT 3
4. CONT TV 000—
VIDEO +20+2—
COMPONENT +2
5. COLOUR TV / VIDEO +10 +18 +0 2
COMPONENT +8 +18
6. TINT TV +6 +6 10
VIDEO +6 +6 +60
COMPONENT +6 3
7. BLACK OFFSET R-Y —0——
B-Y —0——
8. SHARP TV 15 17 15
VIDEO 13 11 12
COMPONENT 15
: Do not adjust.
Adjustment of SUB COLOUR-II (Page 22)
Adjustment part Description
5. COLOUR
PAL COLOUR Value (A) in the figure: Set to 0V (W & G). SECAM COLOUR Value (A) in the figure: Set to 5V (W & G). NTSC 3.58 COLOUR Value (A) in the figure: Set to +6V (W & G).
Adjustment of SUB TINT-II (Page 23)
Adjustment part Description
6. TINT
NTSC 3.58 TINT Value (B) in the figure: Set to +6V (W & Cy).
No. 560636
AV-25PS
DEFLECTION CIRCUIT ADJUSTMENT (Page 25)
[DEFLECTION ADJUSTMENTS INITIAL SETTING VALUE (SUB MENU 4. DEF)]
Initial setting value
Setting item Adjustment name REGULAR ZOOM 16:9
50Hz 60Hz 50Hz 60Hz 50Hz 60Hz
1. V-SHIFT Vertical shift 30+1010
2. V-SIZE Vertical size +13 0 +36 +35 37 37
3. SUBTITLE Subtitle 0 +10+70 0
4. H-CENT Horizontal center 9 +5 1 10 0
5. H-SIZE Horizontal size +11 1 9 7 10
6. EW-PIN Side pin correction 1 1 4 5 +2 +1
7. TRAPEZ Trapezoidal distortion correction +4 10 01+1
8. EW.COR.L Corner pin correction Low side 2000+1+1
9. EW.COR.H Corner pin correction High side 2000+1+1
10. V.S-COR Vertical size correction +900000
11. V-LIN Vertical Linearity 0 0 +10 0 0
12. H-BLK-R Horizontal Blanking Right 0000+29 0
13. H-BLK-L Horizontal Blanking Left 000000
14. V-EHT V size correction level caused by EHT change 400000
15. H-EHT H size correction level caused by EHT change 400000
16. EHT-GAIN Size correction gain caused by EHT change 000000
: Do not adjust.
AUDIO CIRCUIT ADJUSTMENT (Page 29)
[AUDIO ADJUSTMENTS INITIAL SETTING VALUE (SUB MENU 3. AUDIO)]
Setting item Variable range Fixed value
1. ERROR LIMIT 000H ~ FF0H 100H
2. A2 ID THR 00H ~ FFH 14H
3. BASS 17 ~ +17 +0
4. TREBLE 17 ~ +17 +0
: Do not adjust.
No. 56063 7
AV-25PS
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan
No. 560638
AV25PSM-H #3
CTH 0009 CRT
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