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Model
KV-38DRC2
Pages
127
Size
23.32 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-38drc2.pdf
Date
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— 14 —
KV-38DRC2 / 38DRC2C
2-6.  PICTURE QUALITY ADJUSTMENTS
Preparation:
•  Set PRO MODE (Picture: MAX, GAMMA: 0).
•  Dynamic-color: Off (=Trinitron: MID).
•  Set the Service Mode to the following:
NO. Name
Control Function
Avg. Data
06 UDCL
Dynamic Color: OFF
0
08 UGRAM
GRAMMA
5
15 DCTR
DC-TRAN
2
16 DPIC
DYNAMIC PIC: OFF
1
C2150P-4
1.  Input signal (480i):
 
• Color Bar Video 75 IRE (White) 75% modulation 7.5% Set-up.
 
• Color Bar RF 75 IRE (White) 75% modulation 7.5% Set-up.
2-6.1. VIDEO INPUT - TWO PICTURE SUB 
  CONTRAST ADJUSTMENT
Preparation:
•  Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
•  Set picture mode: P&P (PRO MODE).
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
00 UPIC
PICTURE
63
02 UCOL
COLOR
0
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2150P-4
2150P-2
INITIAL DATA (IMPORTANT)
NO. Name
Control Function
Avg. Data
23 SCON
SUB-CONT
9
NO. Name
Control Function
Avg. Data
00 YLEV
Y-OUT
23
NO. Name
Control Function
Avg. Data
00 YLEV
Y-OUT
23
2150P-4
2103-1
2103-2
2.  Connect oscilloscope to Pin 1 of CN9001 (R.DRV) on the C Board.
3.  Adjust MAIN (left) side contrast according to Service Mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-1
4.  Adjust SUB (right) side contrast according to Service Mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-2
white
black
GND
VR2
VR1
VR1-VR2 =  VR = 2.00 ± 0.05 Vp-p
5.  Write data from Steps 3 and 4 above, into memory.
2-6.2. VIDEO INPUT - SUB HUE/SUB COLOR 
  ADJUSTMENT
Preparation:
•  Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
•  Set picture mode: P&P (PRO MODE).
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
00 UPIC
PICTURE
63
02 UCOL
COLOR
31
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
7
2150P-4
2150P-2
2.  Connect an oscilloscope to Pin 5 of CN9001 (B. DRV) on the C Board.
3.  Adjust MAIN (left) side color according to Service Mode for SCOL.
4.  Adjust MAIN (left) side color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB-COL
04 SHUE
SUB-HUE
2103-1
5.  Adjust SUB (right) side color according to Service Mode for SCOL.
6.  Adjust SUB (right) side color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB-COL
04 SHUE
SUB-HUE
2103-2
— 15 —
KV-38DRC2 / 38DRC2C
VB4
VB3
VB2
VB1
COLOR: VB1 < VB4 (=VB1 + 0~90 mV)
HUE: VB2 < VB3 (=VB2 + 0~90 mV)
(HUE: Adjust data -2 STEP)
7.  Write data into memory.
2-6.3. RF INPUT - TWO PICTURE SUB 
  CONTRAST ADJUSTMENT
Preparation:
•  Input a Color Bar signal to RF (75 IRE 75%).
•  Set picture mode: P&P (PRO MODE).
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
00 UPIC
PICTURE
63
02 UCOL
COLOR
0
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2150P-4
2150P-2
INITIAL DATA (IMPORTANT)
NO. Name
Control Function
Avg. Data
23 SCON
SUB-CONT
9
NO. Name
Control Function
Avg. Data
00 YLEV
Y-OUT
23
NO. Name
Control Function
Avg. Data
00 YLEV
Y-OUT
23
2150P-4
2103-1
2103-2
 
Note:  Use the same average data as 2-6.1., Items 3 - 4 after the 
  
adjustment.
2.  Connect an oscilloscope to Pin 1 of CN9001 (R. DRV) on the C 
Board.
3.  Adjust MAIN (left) side contrast according to service mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-1
4.  Adjust SUB (right) side contrast according to Service Mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-2
white
black
GND
VR2
VR1
VR1-VR2 =  VR = 2.00 ± 0.05 Vp-p
5.  Write data from Steps 3 - 4 above, into memory.
2-6.4. RF INPUT - SUB HUE/SUB COLOR 
  ADJUSTMENT
Preparation:
•  Input a Color Bar signal to RF (75 IRE 75%).
•  Set picture mode: P&P (PRO MODE).
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
00 UPIC
PICTURE
63
02 UCOL
COLOR
31
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
7
2150P-4
2150P-4
INITIAL DATA (IMPORTANT)
NO. Name
Control Function
Avg. Data
24 CLOF
OFFSET for UCOL
8
25 HUOF
OFFSET for UHUE
4
NO. Name
Control Function
Avg. Data
01 CLEV
CB & CR-OUT
17
20 CBOF
CB-OFFSET
31
21 CROF
CR-OFFSET
31
NO. Name
Control Function
Avg. Data
01
CB & CR-OUT
18
20 CBOF
CB-OFFSET
31
21 CROF
CR-OFFSET
31
2150P-4
2103-1
2103-2
 
Note:  Use the same average data as 2-6.2., Items 3-6 after the 
  
adjustment.
2.  Connect an oscilloscope to pin 5 of CN9001 (B. DRV) on the C Board.
3.  Adjust MAIN (left) side color according to Service Mode for SCOL.
4.  Adjust MAIN (left) side color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB COLOR
04 SHUE
SUB HUE
2103-1
5.  Adjust SUB (right) side color according to Service Mode for SCOL.
— 16 —
KV-38DRC2 / 38DRC2C
6.  Adjust SUB (right) side color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB COLOR
04 SHUE
SUB HUE
2103-2
VB4
VB3
VB2
VB1
COLOR: VB1 < VB4 (=VB1 + 0~90 mV)
HUE: VB2 < VB3 (=VB2 + 0~90 mV)
(HUE: Adjust data -2 STEP)
7.  Write data into memory.
2-7.  WHITE BALANCE (CRT) AND SUB 
BRIGHT ADJUSTMENT
Preparation
•  Input an all white 480I (15.734 KHz) signal into the VIDEO 1 input 
terminal to perform the White Balance (highlight, cut-off) adjustments.  
The parameters to adjust are in the CXA2150P in Service Mode.
1.  Set the following:
 
Picture: 
Full Mode
 
  
 
Pro Mode
 
Color:   
Center
2.  Adjust White Balance in the Service Mode and set the following data:
NO. Name
Control Function
Avg. Data
05 RDRV
R-DRIVE
Fix: 41
06 GDRV
G-DRIVE
Adjust
07 BDRV
B-DRIVE
Adjust
08 RCUT
R-CUT OFF
Fix: 41
09 GCUT
G-CUT OFF
Adjust
10 BCUT
B-CUT OFF
Adjust
2150P-1
3.  Adjust Sub Brightness: Input an all black signal (to IRE 7.5% set up) 
480i (15.75 KHz) signal into the VIDEO 1 input terminal.  Adjust the 
following parameter of CXA2150P-1:
4.  Check Initial Data (Important).
NO. Name
Control Function
Avg. Data
04 SBRT
SUB-BRIGHT
Adjust
CXA2150P-1
NO. Name
Control Function
Avg. Data
00 SBOT
SUB-BRT OFFSET
7
12 SBOF
SUB-BRT OFFSET
63
2150P-1
5.  Repeat Steps 2-4.
2-8.  RASTER CENTER ADJUSTMENT
Preparation:
•  Input a monoscope signal.
•  Set to NTSC (DRC) mode.
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
06 AGNG
AGING 1, AGING 2
2
NO. Name
Control Function
Avg. Data
02 HSIZ
Horiz Size
45
NO. Name
Control Function
Avg. Data
00 HBLK
Blanking Enable
0
CXA2150P-2
CXA2150D-2
CXA2150D-3
2.  Reduce HSIZ to see sides of raster.
3.  Adjust H-Center with CXA2150D-2 00.
4.  Adjust to the best screen position with H-CENT and write data.
5.  Restore aging, HSIZ and HBLK to original condition.
2-9.  PICTURE DISTORTION ADJUSTMENTS
2-9.1. NTSC (DRC) FULL MODE  
 
 
  ADJUSTMENT
1.  Face the picture tube in an east-west direction.
2.  Complete V-PIN and V-CEN adjsuments fi rst (A2150-D1 05 V-PIN, 
A2150-D1 04 V-CEN).
3.  Input a monoscope and crosshatch signal.  Adjust the picture 
distortion with the following service parameters to balance the best 
condition for these two signals.
A2150-D1
00
VPOS
A2150-D1
01
VSIZ
A2150-D1
02
VLIN
A2150-D1
03
VSCO
A2150-D1
04
VCEN
A2150-D1
05
VPIN
A2150-D1
07
HTPZ
A2150-D2
01
HPOS
A2150-D2
02
HSIZ
A2150-D2
03
SLIN
A2150-D2
04
MPIN
A2150-D2
06
UCP
A2150-D2
07
LCP
A2150-D2
13
PPHA
A2150-D2
14
VANG
A2150-D2
15
LANG
A2150-D2
16
VBOW
A2150-D2
17
LBOW
 
Note:  Make sure that the picture size is within specs.  Vertical size is 
  
11.7 ± 0.1 sq. and horizontal size is 15.6 ± 0.1 sq.
4.  Write data into memory and then set the screen to 1080i mode.
— 17 —
KV-38DRC2 / 38DRC2C
CXA2150D-1
0.  VPOS (V-POSITION)
1.  VSIZ (V-SIZE)
2.  VLIN (V-LINE)
3.  VSCO (VS-COR)
7.  HTPZ (H-TRAPEZOID)
CXA2150D-2
1.  HPOS (H-POSITION)
2.  HSIZ (H-SIZE)
5.  PIN (PIN AMP)
6.  UCP (UP COR PIN COR)
7.  LCP (LOW CO PIN COR)
13. PPHA (PIN PHASE)
14. VANG (AFC-ANGLE)
15. LANG (L-ANGLE)
16. VBOW (AFC-BOW)
17. LBOW (L-BOW)
2-9.2. 1080i HD MODE ADJUSTMENT
1.  Input a 1080i cross-hatch signal and an HD monoscope signal that 
contains overscan markers.
2.  Adjust the raster position per Section 2-8., only if this procedure was 
not performed for full mode.
3.  Adjust the geometry similar to Full DRC mode.  Vertical size is 11.7 
± 0.1 sq. and horizontal size is 15.6 ± 0.1 sq., if monoscope signal is 
available.  Otherwise, set the Vertical size to 91.0 ± 0.6% scan and 
Horizontal size as 91.0 ± 0.6% scan.
4.  Use the following register to adjust the horizontal parameter:
A2150-D2
01
HPOS
 
Note:  If necessary, touch up the geometry using the data register 
  
listed above for Full mode.
5.  Write the data into memory.
2-9.3. VERTICAL COMPRESSED MODE  
 
  CHECK AND CONFIRMATION
1.  Input a monoscope and crosshatch signal.
2.  Check vertical compressed mode.
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