JVC AV-T2122 Schematic

A
SER VICE MANUAL
COLOR TELEVISION
V-T2122
BASIC CHASSIS
GA2
!!
/AR
CONTENTS
SPECIFICATIONS
!
SAFETY PRECAUTIONS
!
FEATURES
!
FUNCTIONS
!
SPECIFIC SERVICE INSTRUCTIONS
!
SERVICE ADJUSTMENTS
!
PARTS LIST
!
OPERATING INSTRUCTIONS
STANDARD CIRCUIT DIAGRAM (APPENDIX)
1
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COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
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10 29
2-1
2 3 4 4 6
No.51866
Aug.2001
Sept. 2001
A
V-T2122
MEMORY I C REPLAC EMENT
1. Memory IC
This model uses a memory IC. The memor y IC st or es dat a for proper op er at ion of video and defl ection c irc uits. When replacing, be sure to use an IC containing this (initial value) data.
2. Memory IC replacement pro cedu re
PROCEDURE SCREEN DISPLAY
(1)
Power off
Switch off the power and dis connect th e pow er c ord f r om t h e wall outlet.
(2)
Replace the memory IC
.
Be sure to u se memo ry ICs written with the i nitial data values.
(3)
Power on
Connect the power cord to the wall outlet and switch on the power.
(4)
System constant check and setting
) Simul taneous ly press th e DISPLA Y key and V IDEO STAT US key
of the remote control unit.
) The SERVICE MENU screen of Fig.1 is displayed.
) While the SERVICE MENU is displayed, again simultaneously
press t h e D IS PLAY an d VIDEO STATUS k eys to displ ay the Fig.2 SYSTEM CONSTANT screen.
) Refer to the SYSTEM CONSTANT table and check the setting
items. W here these diff er, select th e setting it em with the MENU UP / DO WN key and adjust t he setting with the MENU LEFT / RIGHT keys. (The letters of the selected item are displayed in yellow.)
) A fter adj ustin g, r el ease t h e MENU LE FT / R IG HT key to st or e t he
setting value.
) Press the EXIT key twice to return the normal screen.
SERVICE MENU
PICTURE SOUND VIDEO STATUS OTHERS LOW LIGHT HI GH LIGHT RF AFC CHK VCO (CW) I2C BUS CTRL
SELECT BY OPERATE BY
EXIT BY
EXIT
IT
Fig.1
SYSTEM CONSTANT VIDEO : 2
AUDIO : MTS VARI. OUT : NO GAME : YES CINEMA : YES
(5)
Receive chann el s et ting
SELECT BY OPERATE BY
EXIT BY
EXIT
Refer to the OPERATING INSTRUCTIONS (USER’S GUID E) and set the receive channels (Channels Preset) as de scribed.
SYSTEM CONSTANT
(6)
User setti n gs
Check th e us er s ett in g i t ems according t o Table 2-1 and 2- 2.
CCD : YES RETURN+ : YES SURROUND : YES
Where these do not agree, refer to the OPERATING INSTRUCTIONS (USER’S GUIDE) and set the items as described.
(7)
SERVICE MENU setting
M37272MA-
SELECT BY OPERATE BY
×××
×××
××××××
SP
EXIT BY
EXIT
Verify what to set in the SERVICE MENU, and set whatever is necessary. (Fig.1) Refer to the SERVICE ADJUSTMENT for setting.
Fig.2
8
No.51866
A
SETTING OF SYSTEM CONSTANT SET
Setting item Setting content Setting value
V-T2122
VIDEO 2 AUDIO MTS VARI. OUT NO GAME YES CINEMA YES CCD YES
RETURN +
SURROUND YES
MONO PH.MONO MTS
12
YES NO YES NO
YES NO YES NO YES NO YES NO
Table 1
YES
USER SETTING VALUES
1.Settin g of FUN CTION Setting item Setting value Setting item Setting value
MAIN POWER OFF DISPLAY OFF SUB POWER ON SLEEP TIMER 0 MIN CHANNEL CH 02 VIDEO STATUS ESTANDAR CAPTION OFF(CC1/T1) PICTURE BOOSTER OFF VOLUME 10 COLOR SYSTEM AUTO TV/VIDEO TV HYPER SURROUND OFF
Table 2-1
2.Setting of MENU
Setting item Setting value
TINTE ESTANDAR ALTAVOCES SI COLOR ESTANDAR CHILD LOCK NO CONTRASTE ESTANDAR TEMPORIZADOR NO BRILLO ESTANDAR LISTA DE CANAIS SET OPTIONALLY DETALLE ESTANDAR AJUSTE CODIGO DE ACCESO Unnecessary to Set GRAVES CENTER PANTALLA AZUL NO AGUDOS CENTER FONDO NEGRO SI (SIM) BALANCE CENTER IDIOMA ESP. MTS ESTÉREO SUBTITULOS OCULTOS NO(CC1/T1)
Table 2-2
Setting item Setting value
No.51866
9
A
V-T2122
SERVICE ADJUSTMENTS
ADJUSTMENT PREPARATION
1. You can make t he nec essar y adju st ment s for thi s un it wit h ei ther th e rem ote contro l u nit or with th e adj ust men t equ ip ment and part s as given below.
2. Adju stment with t he r e mote control unit is made on t he b a si s o f t h e initial set t i ng v al u es , h o wev er , t h e new setting v alu es which set the screen to its optimum condition may differ from the initial settings.
3. Make sure that AC power is turned on correctly..
4. Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30 minutes
5. Unless otherwise specified, prepare the most suitable reception or input signal for adjustment.
6. Never touch any adjustment parts, which are not specified in the list for this adjustment-variable resistors, transformers, condensers, et c .
7. Pres et ti ng b efore adjustment. Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.
VIDEO STATUS ESTANDAR
GRAVES, AGUDOS, BALANCE CENTER
$$$$
ADJUSTMENT EQUIPMENT
1. DC volt m eter(or digital volt m et er )
2. Oscilloscope
3. Signal generator ( Pa ttern generator ) [NTSC%M]![PAL-M] [PAL-N ]
4. Remote control unit
5. TV audio multiplex signal generator
6. Frequency counter
ADJUSTMENT ITEMS
B1 POWER SUPPLY
IF VCO adjustment
RF AGC adjustment
FOCUS ad jus tment
DEFLECT IO N ad jus t m ent
V. HEIGHT, V. POSITION, V. LIN., V S CR adjustment H. POSITION adjustment
VIDEO / CHROMA adjustment
WHITE BALANCE (Low light) adjustment WHIT E BALAN C E (H i gh li ght) adjus t m ent SUB BRIGHT adjustment SUB CONTRAST adjustment SUB COLOR adjustment SUB TINT adjustment
●MTS adjus t m en t INPUT LEVEL adjustment STEREO VCO adjustment SAP VCO adjustment FILTER check SEPARATION adjust ment
10
No.51866
A
ADJUSTMENT LOCATIONS
(
)
FRONT
VOL+
V-T2122
CH-CH+VOL-
MENU
SW
DEG.
F901
PW
MPX
T
5 1
AV IN OUT
IC701
TUNER
IC704
T111
CW
IC101
B1(TP-91) GND(TP-E)
B1
S
MAIN P WB
HV
3
1
X
U
T522
3
1
UPPER : FOCUS LOWER : SCREEN
CRT SOCKET PWB
TOP
(Within MAIN PWB ASS'Y)
TP-47B
E1
TP-E
SOLDER SIDE
No.51866
CRT EARTH
(BRAIDED ASS'Y)
11
A
V-T2122
BASIC OPERATION OF SER VICE MENU
1. Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
2. In general
(1) PICTURE (2) SOUND (3) VIDEO STATUS (4) OTHERS (5) LOW LIGHT (6) HIGH LIGHT (7) RF AFC CHK (8) VCO (CW) (9) I
3. Basic Op er a t io n s of t he SE RV ICE MENU (1) How to enter the SERVICE MENU.
(2) SERVICE MENU screen selection
basic sett ing
!!!!
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2
C BUS CTRL
・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・
(adjustments) items or verifications are performed in the SERVICE MENU.
!!!!
This set the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits. This set the setting values (adjustment values) of the AUDIO circuit.
・・・・・・・・・・・・・
This is used when the THEATER and GAME MODE is adjusted. This is used when the OTHERS MODE is adjusted. This sets the setting values (adjustment values) of the WHITE BALANCE circuit. This sets the setting values (adjustment values) of the WHITE BALANCE circuit. This is used when the RF AFC CHK MODE is verified. This is used when the IF VCO is adjusted.
・・・・・・・・・・・・・・・
This is used when ON/OFF of the I2C BUS CTRL is set.
[Do not adjust]
[Fixed ON]
Press the DISPL A Y k ey and V IDEO ST AT US k e y!of the remote control unit at the same time to enter the SERVICE MENU screen shown in figure page la ter.
Press the UP / DOWN key of the MENU to select any of the following items. (The lett ers of t h e sel ec t ed it ems are disp l ayed in y ell ow .)
PICTURE
VIDEO STATUS
LOW LIGHT
RF AFC CHK
VCO (CW)
SOUND
OTHERS
HIGH LIGHT
I2C BUS CTRL
(3) Enter the any setting ( adjustment ) mode
PICTURE, SOUND and OTHERS mode
"
1) If select any of PICTURE, SOUND or OTHERS items, and the LEFT / RIGHT key is pressed from SERVICE MENU ( MAIN MENU ), the screen ② will be dis p layed as sh own in f i gure page later.
2) T hen the U P / DOWN k ey is pr ess ed, th e PICT UR E m ode sc r een ③ or th e SOUND m ode s cr een ④ or the OTHERS mode screen ⑤ is displayed, and the PICTURE, SOUND or OTHERS setting can be performed.
VIDEO STATUS, LOW LIGHT, HIGH LIGHT, RF AF C
"
CHK,
VCO (CW) and I
!!!!
!!!!
2
C BUS CTRL mode
1) If select any of VIDEO STATUS / LOW LIGHT / HIGH LIGHT / RF AFC CHK / VCO (CW) / I2C BUS CTRL items, and the LEFT / RIGHT k ey is pr essed fr om SER V I CE MEN U ( MAIN M E NU ), the screens ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ w ill b e displ ayed as sh own in figure page later.
2) Then the sett in gs or verificat i ons c an b e performed.
12
No.51866
A
V-T2122
)
)
y
①①①①
SERVICE MENU (MAIN MENU
SERVICE MENU
PICTURE SOUND VIDEO STATUS OT HERS LOW LIGHT HIGH LIGHT RF AFC CHK VCO (CW
SELECT BY OPERATE BY
⑧⑧⑧⑧
HIGH LIGHT MODE
HIGH LIGHT
***
*** ***
******
⑨⑨⑨⑨
RF AFC CHK MODE
I2C BUS CTRL
EXIT BY
EXIT
***
******
EXIT BY
EXIT
[DO NOT ADJUST]
②②②②
SCREEN
SELECT BY EXIT BY
④④④④
SOUND MODE
1. NOISE STATUS
SELECT BY OPERATE BY
EXIT
***
***
****** ****
****
********
EXIT BY
EXIT
③③③③
PICTURE MODE
1. PICTURE
*****
***** ****
**********
SELECT BY OPERATE BY
⑤⑤⑤⑤
OTHERS MODE
1. OSD HP
SELECT BY OPERATE BY
***
***
****** ****
********
EXIT BY
EXIT
***
***
******
EXIT BY
EXIT
RF AFC ON
FINE SELECT BY OPERATE BY
⑩⑩⑩⑩
VOC (CW) MODE
TOO HIGH ABOVE REFERENCE BELOW REFERE NCE TOO LOW SYNC : YES
⑪⑪⑪⑪
I2C BUS CTRL MODE
[FIXED ON]
I2C BUS ON
OPERATE BY
EXIT BY
**
**
****
EXIT BY
EXIT
EXIT BY
EXIT
EXIT
CINEMA TINT G DRIVE
COLOR B DRIVE PICTURE R CUT. BRIGHT G CUT. DETAIL B CUT.
SELECT BY OPERATE BY
BRIGHT
***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
******
⑦⑦⑦⑦
LOW LIGHT MODE
BRIGHT
***
*** *** ***
******
***
***
****** *** ***
*** ****** ***
EXIT BY
EXIT
EXIT BY
EXIT
⑥⑥⑥⑥
VIDEO STATUS MODE
***
****** ***
****** ***
****** ***
****** ***
******
STATUS
Press
VIDEO
Ke
GAME TINT G DRIVE
COLOR B DRIVE PICTURE R CUT. BRIGHT G CUT. DETAIL B CUT.
SELECT BY OPERATE BY
***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
******
EXIT BY
EXIT
***
****** ***
****** ***
****** ***
****** ***
******
No.51866
13
A
V-T2122
(4) Setting method
1) UP / DOWN key of the MENU Select the SETTING ITEM.
2) LEFT / RIGHT key of the MENU Setting (adjust) the SETTING VALUE of the SETTING ITEM. When the key is released the SETTING VALUE will be stored (memorized).
3) EXIT key Returns to the previous screen.
(PICTURE MODE ONLY)
[NOTE]
When the IN ITIAL SET TING VALUE is t urned to yell ow, you can adj ust the values but you cannot adjust the values when it is turned to red. (Because the signal conditions, etc. are not met.)
(5) Releasing SERVICE MENU
1) After returni ng to the SERVIC E MENU upon c ompletion of the s etting
(adjust m ent ) w or k, pr ess the EXIT key ag ain.
1. PICTURE
*****
***** ****
**********
SELECT BY OPERATE BY
PICTURE MODE
SETTING ITEM
1. NOISE STATUS
SELECT BY OPERATE BY
***
***
****** ****
********
EXIT BY
EXIT
***
***
****** ****
****
********
EXIT BY
EXIT
IT
IT
INITIAL SETTING VALUE ↓ (Adjus t) SETTING VALUE
The s ettings f or LOW LIGHT and H IGH LIGHT are descr ibed in t he W HITE
BALANCE page of ADJUSTMENT. The setting for VCO (CW) are described in the IF VCO page of ADJUSTMENT.
The letter of the Items are dis played in y ell ow .
selected
CINEMA TINT G DRIVE
COLOR B DRIVE PICTURE R CUT. BRIGHT G CUT. DETAIL B CUT.
SELECT BY OPERATE BY
***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
******
EXIT BY
EXIT
***
****** ***
****** ***
****** ***
****** ***
******
I
T
Press
VIDEO
STATUS
Key
SOUND MODE
1. OSD HP SELECT BY
OPERATE BY
OTHERS MODE
GAME TINT G DRIVE
COLOR B DRIVE PICTURE R CUT. BRIGHT G CUT. DETAIL B CUT.
SELECT BY OPERATE BY
***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
****** ***
*** ***
******
***
***
******
EXIT BY
EXIT
EXIT BY
EXIT
***
****** ***
****** ***
****** ***
****** ***
******
IT
I
T
VIDEO STATUS MODE
14
No.51866
A
V-T2122
INITIAL SETTING VALUE OF SERVICE MENU
1. Adjus tment of the SERVI CE MENU is made on the basis of the initial setting val ues; however, the new setting values which set the screen in its optimum condition may differ from the initial setting.
2. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In “ADJUSTMENT”.
PICTURE MODE
""""
The four settin g it ems in t he vid eo m o d e No.8 E XT P IC., N o.9 EXT B RI., No. 10 EXT C O L. a n d No.11 E XT T I NT are linked to the items in
#
the TV MO DE No.1 PICT U R E, No.2 BR IG H T , No.5 C OL. NTSC and No.6 T INT, res p ect ively. When the s etting items i n the TV mode ar e adjust ed, th e val u es in the s et t in g items in t he video m ode are r evised au t om atically t o the s am e values in t he TV mode.(Th e i nitial setting values given in ( ) are off-set values.)
When the f our items ( No.8, 9, 10 and 11) are adjusted in the video mode, th e s etti ng v alues in each item are revis ed in d ep end ently.
#
No. Setting item Variable range
1. PICTURE
2. BRIGHT
3. COL. PALM
4. COL. PALN
5. COL. NTSC
6. TINT
7. TV DTL
8. EXT PIC.
9. EXT BRI.
10. EXT COL.
11. EXT TINT
12. EXT DTL
13. P/N KILL 0 / 1
14. Y S CONT
15. TV Y-DL
16. EXT Y-DL
17. WPL SW 0 / 1
18. Y GAMMA 0 / 1
19. P/N G P 0 / 1
20. COL. L SW 0 / 1
21. CO L. LMT.
22. PN C. ATT
23. OFST. SW 0 / 1
24. OFSET. B-Y
25. OFSET. R-Y
26. C-TOF SW 0 / 1
27. TV T FO
28. TV T Q
29. EXT T FO
30. EXT T Q
0~127 0~127 0~127 0~127 0~127 0~127
0~63
25
±
25
±
25
±
25
±
0~63
0~31
0~7 0~7
0~3 0~3
0~15 0~15
0~3 0~3 0~3 0~3
Initial setting value No. Set ting item Variable r ange Initial setting value
65 64 70 70 80 65 38 (0)
(+5)
(0) +1 35
1
31
1 2 0 0 0 1 1 1 0 8 8 1 1 0 0 0
31. C-TRAP 0 / 1
32. C-TR. FO
33. C-TRAP Q
34. FIX B/W 0 / 1
35. APA P. FO
36. DC TRAN.
37. B. ST. SW
38. B. ST. PO. 0 / 1
39. ABL GAIN
40. ABL PO
41. HALF T.
42. DRV G SW 0 / 1
43. NT. COMB 0 / 1
44. COIN DET
45. NOISE L
46. VCD MODE 0 / 1
47. V AGC SP 0 / 1
48. H POS. 50
49. H BLK. 50
50. V POS. 50
51. V SIZE50
52. V S CR50
53. V LIN. 50
54. H POS. 60
55. H BLK. 60
56. V POS. 60
57. V SIZE60
58. V S CR60
59. V LIN. 60
60. RF AGC
0~3 0~3
0~3 0~7 0~7
0~7 0~7 0~2
0~3 0~3
0~31
0~7
0~7 0~127 0~127
0~31 0~31
0~7
0~7 0~127 0~127
0~31
0~255
0 2 0 0 1 7 0 0 4 0 1 0 1 3 3 0 0 7 0
0 87 28
4 12
0
0 88 48
4
160
No.51866
15
A
V-T2122
SOUND MODE
"
No. Setting item Variable range Initial setting value
1. NOISE 0 / 1 1
2. IN LEVEL
3. FH MON. 0 / 1 0
4. ST VCO
5. PILOT 0 / 1 0
6. FILTER
7. LOW SEP.
8. HI SEP.
9. 5FH MON . 0 / 1 0
10. SAP VCO
11. IN GAIN 0 / 1 0
12. FIL. OFF
VIDEO STATUS MODE
"
No.Setting (Adjustment) item Variable range
1. TINT
0~63
0~63
0~63 0~63 0~63
0~63
10
±
20
±
Initial settin g val ue
CINEMA GAME
00
20
25
30 22 23
26
0
2. COLOR
3. PICTURE
4. BRIGHT
5. DETAIL
6. G DRIVE
7. B DRIVE
8. R CUT.
9. G CUT.
10. B CUT
20
±
20
±
20
±
15
±
-99~+50
-99~+50 10
±
10
±
10
±
-3 -3
-10 -10 00 0-5
-22 0
-54 0 00 00 00
16
No.51866
A
OTHERS MODE!
"
No. Setting (Adjustment) item Variable range Initial setting value
!
!!
V-T2122
1. OSD HP
2. OSD VP
3. H CK SW 0 / 1 0
LOW LIGHT MODE!
"
Setting (Adjustment) item Variable range Initial setting value
R CUTOFF 0~255 20 G CUTOFF 0~255 20 B CUTOFF 0~255 20
HIGH LIGHT MODE!
"
Setting (Adjustment) item Variable range Initial setting value
G DRIVE B DRIVE
!
!!
!
!!
0~31 0~15
0~255 0~255
23 12
128 128
RF AFC CHECK MODE!
"
Setting (Adjustment) item Variable range Initial setting value
RF AFC ON / OFF ON FINE
2
C BUS CTRL MODE!
I
"
Setting (Adjustment) item Variable range Initial setting value
I2C BUS ON / OFF
!
!!
(DO NOT ADJUST)
-77~+77
!
!!
± **
[Fixed ON]
No.51866
17
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