JVC AV 27D302 User manual

No.51788
Mar. 2001
AV-27D302
AV-27D202
1COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. Mar. 2001
AV-27D302/S
AV-27D302/R
AV-27D202/S
AV-27D202/R
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
FD

No.51788
A
V-27D302
A
V-27D202
MEMORY IC REPLACEMENT
1. Memory IC
This model uses a memory IC.
This memory IC stores data for proper operation of the video and deflection circuits.
When replacing, be sure to use an IC containing this (initial value) data.
2. Memory IC replacement procedure
Procedure Screen display
(1) Power off
Switch off the power and disconnect the power cord from the outlet.
(2) Replace the memory IC
Initial value must be entered into the new IC.
(3) Power on
Connect the power cord to the outlet and switch on the power.
(4) System constant check and setting
1) Press SLEEP TIMER key and, while the indication of “SLEEP TIMER 0
MIN.” is being displayed, press DISPLAY key and VIDEO STATUS key
on the remote control unit simultaneously.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) While the SERVICE MENU is displayed, again simultaneously press
the DISPLAY and VIDEO STATUS keys to display the Fig.2 SYSTEM
CONSTANT screen.
4) Refer to the SYSTEM CONSTANT table and check the setting items.
Where these differ, select the setting item with the UP/DOWN (ً/ٕ)
key and adjust the setting with the LEFT/RIGHT ( ) keys.
5) After adjusting, release the LEFT/RIGHT() key to store the setting
value.
6) Press the EXIT key twice to return the normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and set
the receive channels (Channels Preset) as described.
(6) User settings
Check the user setting items according to Table 2.
Where these do not agree, refer to the OPERATING INSTRUCTIONS
(USER'S GUIDE) and set the items as described.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary.(Fig.1) Refer to the SERVICE ADJUSTMENT for setting.
SERVICE MENU
PICTURE SOUND
THEATER
LO W LIGHT HIGH LIGHT
RF AFC CHK
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.1
SYSTEM CONSTANT
MODEL : **-
**-**-
**-*
**
*****
********
****
V-CHIP : YES
CAN V-CHIP : YES
***
******
****
**
*****
********
****- ***
******
****
**
**
**
*
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.2

No.51788
A
V-27D302
A
V-27D202
TABLE 1 (System Constant setting)
Setting value
Setting item Setting content AV-27D302/R, /S AV-27D202/R, /S
MODEL AV-27D302 AV-27D202
V-CHIP YES YES
CAN V-CHIP YES YES
TABLE 2 (User setting value)
Setting item Setting value
1. Use remote controller keys
POWER
CHANNEL
CHANNEL PRESET
VOLUME
TV/VIDEO(INPUT)
ON
CH 02
See OPERATING INSTRUCTIONS.
10
TV
DISPLAY
SLEEP TIMER
VIDEO STATUS
HYPER SURROUND
OFF
OFF
STANDARD
OFF
2. Setting of MENU
TINT
COLOR
PICTURE
BRIGHT
DETAIL
CENTER
CENTER
CENTER
CENTER
CENTER
NOISE MUTING
SET VIDEO STATUS
ON
ALL CENTER
BASS
TREBLE
BALANCE
MTS
TV SPEAKER
CENTER
CENTER
CENTER
STEREO
ON
SET CLOCK
ON/OFF TIMER
LANGUAGE
CLOSED CAPTION
BACKGROUND
V2 COMPONENT IN
Unnecessary to set
NO
ENGLISH
OFF
BLACK
NO
AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
V-CHIP RATINGS
SET LOCK CODE
UNRATED
TUNER MODE : AIR
Unnecessary to set
OFF
ALL OFF
Unnecessary to set
VIEW
A
V-27D302
A
V-27D202
AV-27230 AV-20D202
YES NO
YES NO

No. 51788
A
V-27D302
A
V-27D202
BASIC OPERATION OF SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
2. SERVICE MENU ITEMS
In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU.
zPICTURE 㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
zSOUND 㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This sets the setting values (adjustment values) of the AUDIO circuit.
zTHEATER 㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This is used when the THEATER MODE is adjusted.
zLOW LIGHT㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
zHIGH LIGHT 㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
zRF AFC CHK㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯㨯 This is used when the IF VCO is adjusted. [Do not adjust]
3. Basic Operations of the SERVICE MENU
(1) How to enter the SERVICE MENU.
Press SLEEP TIMER key and, while the indication of “SLEEP TIMER 0 MIN.” is being displayed, press DISPLAY key and VIDEO
STATUS key on the remote control unit simultaneously to enter the SERVICE MENU screen Ԙshown in the next figure page.
(2) SERVICE MENU screen selection
Press the UP / DOWN(ً/ٕ) key to select any of the following items.
٨PICTURE ٨SOUND
٨THEATER
٨LOW LIGHT ٨HIGH LIGHT
٨RF AFC CHK
(3) Enter the any setting ( adjustment ) mode
zPICTURE and SOUND mode
1) If select any of PICTURE or SOUND items, and the LEFT / RIGHT( ) key is pressed from SERVICE MENU ( MAIN MENU ), the
screen ԙwill be displayed as shown in figure page later.
2) Then the UP / DOWN(ً/ٕ) key is pressed, the PICTURE mode screen Ԛor the SOUND mode screen ԛis displayed, and the
PICTURE or SOUND setting can be performed.
zTHEATER, LOW LIGHT, HIGH LIGHT and RF AFC CHK mode
1) If select any of THEATER / LOW LIGHT / HIGH LIGHT / RF AFC CHK items, and the LEFT / RIGHT( ) key is pressed from
SERVICE MENU ( MAIN MENU ), the screens ԜԝԞԟ will be displayed as shown in figure page later.
2) Then the settings or verifications can be performed.

No. 51788
A
V-27D302
A
V-27D202
SELECT BY EXIT BY
IT
EXIT
BRIGHT
EXIT BY
IT
BRIGHT
EXIT
***
******
***
***
******
*** ***
******
*** ***
******
***
SELECT BY
O PERATE BY
EXIT BY
IT
1.BRIGHT
EXIT
STATUS
***
******
***
****
********
*****
**
****
******
***
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
***
SELECT BY
O PERATE BY
EXIT BY
IT
RF AFC
FINE
STATUS
EXIT
Ԙ
ԘԘ
ԘSERVICE MENU (MAIN MENU) ԙ
ԙԙ
ԙSCREEN
Ԟ
ԞԞ
ԞHIGH LIGHTMODE
***
******
***
Ԝ
ԜԜ
ԜTHEATER MODE(1/2)
SELECT BY
O PERATE BY
EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
ԟ
ԟԟ
ԟRF AFC CHK MODE [DO NOT ADJUST]
ON
****
********
*****
**
****
******
***
ԝ
ԝԝ
ԝLO W LIGHTMODE
Ԛ
ԚԚ
ԚPICTURE MODE
***
******
***
ԛ
ԛԛ
ԛSOUND MODE
SELECT BY
O PERATE BY
EXIT BY
IT
1.IN LEVEL
EXIT
STATUS
***
******
***
****
********
*****
**
****
******
***
SERVICE MENU
PICTURE SOUND
THEATER
LO W LIGHT HIGH LIGHT
RF AFC CHK
SELECT BY EXIT BY
OPERATE BY IT
EXIT
TOO HIGH TOO LO WGOOD
R CUT ***
******
***
G CUT ***
******
***
B CUT
R DRIVE
B DRIVE
DC REST
BLK ST
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
GMM PNT ***
******
***
1/2
SELECT BY
O PERATE BY
EXIT BY
IT
CD MAT
RY GAIN
EXIT
*
**
*
*
**
*
GY PHAS *
**
*
CORING *
**
*
CM P CD
CM P RY
*
**
*
*
**
*
CM P GY *
**
*
2/2
CM P CO R *
**
*
THEATER MODE
(
2/2
)

No. 51788
A
V-27D302
A
V-27D202
(4) Setting method
1) UP / DOWN (ً/ٕ)key.
Select the SETTING ITEM.
2) LEFT / RIGHT( ) key.
Setting (adjust) the SETTING VALUE of the SETTING ITEM.
When the key is released the SETTING VALUE will be stored
(memorized).
3) EXIT key
Return to the previous screen.
(5) Releasing SERVICE MENU
1) After returning to the SERVICE MENU upon completion of the setting
(adjustment) work, press the EXIT key again.
ڎThe settings for LOW LIGHT and HIGH LIGHT are described in the WHITE
BALANCE page of ADJUSTMENT.
SELECT BY
OPERATE BY
EXIT BY
IT
1.IN LEVEL
STATUS
EXIT
***
******
***
********
****************
********
SOUND MODE
SELECT BY
OPERATE BY
EXIT BY
IT
1.BRIGHT
EXIT
STATUS
***
******
***
********
****************
********
PICTURE MODE
SETTING VALUE
SETTING
ITEM
SELECT BY
O PERATE BY
EXIT BY
IT
CD MAT
RY GAIN
EXIT
*
**
*
*
**
*
GY PHAS *
**
*
CORING *
**
*
CM P CD
CM P RY
*
**
*
*
**
*
CM P GY *
**
*
2/2
CM P COR *
**
*
THEATER MODE(2/2)
SELECT BY
O PERATE BY
EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
R CUT **
****
***
**
*
G CUT **
****
***
**
*
B CUT
R DRIVE
B DRIVE
DC REST
BLK ST
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
**
****
***
**
*
GMM PNT **
****
***
**
*
1/2
THEATER MODE(1/2)
The letter of the selected
Items are displayed in yellow.

No. 51788
A
V-27D302
A
V-27D202
INITIAL SETTING VALUE OF SERVICE MENU
1. Adjustment of the SERVICE MENU is made on the basis of the initial setting values; 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
zThe 5 setting items in the video mode No.6 EXT BRI, No.7 EXT PICT, No.8 EXT CLR, No.9 EXT TINT and No.10 EXT DTL are linked to the
items in the TV MODE No.1 BRIGHT, No.2 PICTURE, No.3 COLOR, No.4 TINT and No.5 TV DTL respectively. When the setting items in
the TV mode are adjusted, the values in the setting items in the video mode are revised automatically to the same values in the TV mode.
(The initial setting values given in parenthesis are offset values.)
zWhen the 5 items (No.6, 7, 8, 9 and 10) are adjusted in the video mode, the setting values in each item are changed independently.
Initial setting value
No. Setting (Adjustment) items Variable range
AV-27D302 /S
AV-27D202 /S
AV-27D302 /R
AV-27D202 /R
1. BRIGHT 000㨪127 064 064
2. PICTURE 000㨪127 100 100
3. COLOR 000㨪127 055 055
4. TINT 000㨪127 087 087
5. TV DTL 000㨪63 050 050
6. EXT BRI. r025 r000 r000
7. EXT PICT. r025 +002 +002
8. EXT CLR r025 r000 r000
9. EXT TINT r025 -005 -005
10. EXT DTL 000㨪063 050 050
11. CMP BRI r025 -001 -001
12. CMP PICT r025 r000 r000
13. CMP CLR 000㨪127 072 072
14. CMP TINT 000㨪127 037 037
15. CMP DTL 000㨪063 050 050
16. CMP R CT r025 +008 +008
17. CMP G CT r025 r000 r000
18. CMP B CT r025 +008 +008
19. CMP R DR r025 r000 r000
20. CMP B DR r025 -002 -002
21. WPL 000 / 001 001 001
22. C TRAP 000 / 001 000 000
23. CORING 000 / 001 001 001
24. CMP CORI 000 / 001 001 001
25. TV SHAP 000 / 001 001 001
26. EXT SHAP 000 / 001 001 001
27. CMP SHAP 000 / 001 001 001
28. RGB CONT 000㨪063 016 016
29. TV ID S 000 / 001 000 000
30. EXT ID S 000 / 001 000 000

No. 51788
A
V-27D302
A
V-27D202
Initial setting value
No. Setting (Adjustment) items Variable range
AV-27D302 /S
AV-27D202 /S
AV-27D302 /R
AV-27D202 /R
31. F ID 000 / 001 000 000
32. Y MUTE 000 / 001 000 000
33. SUB CONT 000㨪015 008 008
34. R Y GAIN 000 / 001 001 001
35. CMP R Y 000 / 001 001 001
36. G Y PHAS 000 / 001 001 001
37. CMP G Y 000 / 001 001 001
38. CD MATRI 000㨪003 003 003
39. CMP CD M 000㨪003 001 001
40. BLK ST 000㨪003 001 001
41. DC REST 000㨪003 001 001
42. CLR GMM 000 / 001 000 000
43. UV / CBCR 000 / 001 000 000
44. AT FLESH 000 / 001 000 000
45. ABL GAIN 000㨪003 000 000
46. ABL ST P 000㨪003 003 003
47. RGB ABCL 000 / 001 001 001
48. TV B/T 000 / 001 001 001
49. EXT B/T 000 / 001 000 000
50. GMM PNT 000㨪003 003 003
51. BUZZ 000 / 001 000 000
52. RF AGC 000㨪063 045 045
53. AFT SENS 000 / 001 001 001
54. R/G DRV 000 / 001 001 001
55. BLK SW 000 / 001 000 000
56. V S COR 000㨪015 011 011
57. V LIN 000㨪015 012 012
58. V SIZE 000㨪127 037 037
59. V AGC 000 / 001 000 000
60. TV AFC 000㨪003 001 001
61. EXT AFC 000㨪003 002 002
62. V POSI 000㨪007 000 000
63. H POSI 000㨪031 015 015
64. TV V FR 000㨪003 000 000
65. EXT V FR 000㨪003 003 003
66. STND BY 000 / 001 000 000
67. V RMP RE 000 / 001 001 001
68. V 48HZ 000 / 001 000 000
69. V EHT 000㨪007 000 000
70. H EHT 000㨪007 000 000

No. 51788
A
V-27D302
A
V-27D202
Initial setting value
No. Setting (Adjustment) items Variable range
AV-27D302 /S
AV-27D202 /S
AV-27D302 /R
AV-27D202 /R
71. V BLK L 000㨪003 000 000
72. V BLK U 000㨪003 001 001
73. CCD IN 000 / 001 000 000
74. H BLK 000 / 001 000 000
75. OVER MD 000 / 001 001 001
76. APACON L 000 / 001 001 001
77. RF S/N T 000 / 001 000 000
78. EX S/N T 000 / 001 000 000
79. R S/N V1 000㨪063 000 000
80. R S/N V2 000㨪063 000 000
81. R S/N V3 000㨪063 000 000
82. R S/N V4 000㨪063 000 000
83. E S/N V1 000㨪063 000 000
84. E S/N V2 000㨪063 000 000
85. E S/N V3 000㨪063 000 000
86. E S/N V4 000㨪063 000 000
87. COR LEV 000㨪003 000 000
88. VNR CHK 000㨪255 000 000
89. VC SN TM 000㨪255 000 000
90. VC SN SP 000㨪255 000 000
91. CH MUTE 000 / 001 000 000
92. OSD HP 000㨪031 018 018
93. OSD VP 000㨪031 008 008
94. FM TRAP 000 / 001 000 000
95. OSC SEL 000 / 001 001 001
96. SD SEL 000 / 001 001 001
97. VF LK EX 000 / 001 000 000
98. F LOCK 000㨪002 002 002
99. AFC HIGH 000㨪064 031 031
SOUND MODE
Initial setting value
No. Setting (Adjustment) item Variable range AV-27D302 /S
AV-27D202 /S
AV-27D302 /R
AV-27D202 /R
1. IN LEVEL 000㨪063 024 024
2. FH MON 000 / 001 000 000
3. ST VCO 000㨪063 032 032
4. PILOT 000 / 001 000 000
5. FILTER 000㨪063 027 027
6. LOW SEP 000㨪063 014 014
7. HI SEP 000㨪063 021 021
8. 5FH MON 000 / 001 000 000
9. SAP VCO 000㨪063 034 034
10. BBE BASS r010 -001 -001
11. BBE TRE r010 -001 -001

No. 51788
A
V-27D302
A
V-27D202
THEATER MODE
Initial setting value
Setting (Adjustment) item Variable range AV-27D302 /S
AV-27D202 /S
AV-27D302 /R
AV-27D202 /R
TINT -20㨪+20 -06 -06
COLOR -20㨪+20 -05 -05
PICTURE -20㨪+20 -08 -08
BRIGHT -20㨪+20 r00 r00
DETAIL -20㨪+20 +03 +03
R CUT -20㨪+20 r00 r00
G CUT -20㨪+20 r00 r00
B CUT -20㨪+20 r00 r00
R DRIVE -99㨪+99 +06 +06
B DRIVE -99㨪+99 -18 -18
DC REST 0㨪3+01 +01
BLK ST 0㨪3r00 r00
GMM PNT 0㨪3+01 +01
CD MAT 0㨪3+01 +01
RY GAIN 0㨪1+01 +01
GY PHAS 0㨪1r00 r00
CORING 0㨪1+01 +01
CMP CD 0㨪3+01 +01
CMP RY 0㨪1+01 +01
CMP GY 0㨪1r00 r00
CMP COR 0㨪1+01 +01
LOW LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
R CUTOFF
G CUTOFF
B CUTOFF
0㨪255
0㨪255
0㨪255
85
85
85
HIGH LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
G DRIVE
B DRIVE
0㨪255
0㨪255
60
60
RF AFC CHECK MODE
Setting (Adjustment) item Variable range Initial setting value
RF AFC
FINE
ON / OFF
FIXED
ON
FIXED
DO NOT
ADJUST

AV-27D302
AV-27D202
AV-27D302
AV-27D202
No.51788 No.51788
BLOCK DIAGRAM
2-3 2-4
AUDIO
VARI.OUT
RGB
OUT
IC421
V.OUT DY01
T522
FBT
D911
RECT
IF
TUNER
V01
CRT
CRT SOCKET
PWB
24
HB
HEATER
X-RAY
HV
FOCUS
SCREEN
B1
VIDEO
LED
REMOCON
RECEIVER
KEY
F901
IC701
MICRO COMPUTER
32
34
39 40 41 42
YS B G R
IC702
MEMORY
L
Q101
IF AMP
IC101
1CHIP DECODER
134
38115147
BGR
F902
Q522
H.OUT
Q521
H.DRIVE
HD
R / G / B
VD
IC921
POWER
REGULATOR
MAIN PWB
CF041
4.5 FILTER
17
4
VC
SIF
SF101
79
3839 252
Q041
BUFFER
R
INPUT
1
L
R
SP
L
R
IC602
AUDIO AMP
113 8
47
55
LRL R
OUTIN
IC651
MTS&TONE CONTROL
RL RL
VARI.OUT
IN
AUDIO
MPX
42
C
Y
C
IC801 VIDEO SW
810 12 14
IC821
Y/C SW
8 9 10 11
4 3 2 1
Q361
BUFFER
Y
CF021
4.5 TRAP
Q023
BUFFER
S-VIDEO
CV.TV
DET
C
VC
VY
YY
VTV
VY
VC
Q272
BUFFER
1+ 
DIGITAL
COMB
FILTER
IC652
AMP
IC601
BBE
20
114
7
RL R
L
OUT
IN
CY
L
R
AUDIO
INPUT
2
L
R
IC631
SW
AUDIO
FRONT
VIDEO IN
337
FRONT
AUDIO IN


VIDEO
L
RAUDIO
FRONT
IN
(TO IC801)
(TO IC 51)
RY901
CF901
POWER PWB
RL
434445
YP*P4
INPUT
2

Y
VIDEO
P4
P*
TO IC101


AV-27D302
AV-27D202
AV-27D302
AV-27D202
No.51788 No.51788
SFD-1001A-M2
SFD-1002A-M2
MAIN PWB
AV-27D302/S
AV-27D202/S
( )
AV-27D302/R
AV-27D202/R
( )
R658
15K 1/10W
NRVA02D-153X
1/4W
CRT SKT PWB FOR TEST
2-5 2-6
CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM

AV-27D302
AV-27D202
AV-27D302
AV-27D202
No.51788 No.51788
SFD-1001A-M2
SFD-1002A-M2
MAIN PWB
AV-27D302/S
AV-27D202/S
( )
AV-27D302/R
AV-27D202/R
( )
SFD-1001A-M2
SFD-1002A-M2
CRT SOCKET PWB
AV-27D302/S
AV-27D202/S
( )
AV-27D302/R
AV-27D202/R
( )
(Within MAIN PWB)
CE41106-00CJ1
.013 1.5KVH MPP
2.94K 1/10W MF R 7.15K 1/10W MF R
AC250V AC250V
.001 AC250V
.001 AC250V
.001 AC250V
470/200
270 15W
2.2
MAIN
PWB
3KV
POWER PWB
2-7 2-8
MAIN PWB, CRT SOCKET PWB CIRCUIT DIAGRAM

AV-27D302
AV-27D202
POWER PWB
SFD-9001A-M2
QRZ9041-275
1/2W
QMPD290-200-JC
AC275V
AC275V
MAIN PWB
MAIN PWB
POWER PWB CIRCUIT DIAGRAM
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