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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

Sony KV-38DRC2 Service Manual ▷ View online

— 18 —
KV-38DRC2 / 38DRC2C
SECTION 3: SAFETY RELATED ADJUSTMENTS
3-2.  B+ MAX CONFIRMATION
Standard ............................................................................ 135.3 ± 1 VCD
Check Condition:
 
AC input voltage: 120 (± 2) VAC at Board Adjustment Process
 
 
  130 (± 2) VAC at QC
 
 
  120 (± 2) VAC at Overall Adjustment (after aging)
Note
If using a stabilized power supply, make sure that the distortion 
  
factor is 3% or less. 
Setting Mode:........................................................................... Full mode
Signal Input:................................................ Cross-hatch of NTSC at QC
Initial Setting:........................................................Reset condition at QC
Confi rm Point:.......................................Across C6544 for B+ of D Board
3-1.   X RV8001, RV8002 CONFIRMATION METHOD AND HV SERVICE ADJUSTMENTS
3-3.  HV SERVICE FLOWCHART
Is T8001 
Changed?
Is D-Board 
Replaced?
Replace RV8001, RV8002  with the same value:
HV project adjust and inspection
1. Turn RV8001 fully counter-clockwise.
2.  Turn set on with black video signal then adjust RV8002 slowly to obtain 
35.5kV.
3. Turn RV8001 clockwise slowly until hold down operation initially activates.
4.  Adjust RV8002 clockwise, then turn the set on.  Change video to white field then 
slowly turn RV8002 counter-clockwise to get 34.8 ± 0.2kV. Confirm set does 
NOT TURN OFF at this condition. If yes, then repeat from step 1 again.
5.  Finally, set back RV8002 to 31.50kv + 0.2kv at video cut off (black video).
Start
No
Yes
Change any
or
marked parts
Yes
No
Yes
No
Start from
the beginning.
Yes
Is +B, Vd and
hold down
confirmed?
Finish for
hold-down
check.
Confirm +B, Vd and check hold-down on the D Board video with no signal (standard 
reset mode) as follows:
1. Confirm +B across C6544 to make sure that it is 135.3 ± 1 Vdc.
2. Confirm Vd at Pin 2 CN5506 or at TP-Vd for 4.3V < Vd < 4.65 Vdc.
3. Apply 5.5 ± 0.5 Vdc at Pin 2 of CN5506, then confirm that set holds down.
If all adjustments are complete, then seal and secure RV8001, RV8002 with 
epoxy to prevent any possible misadjustment by non-trained technical 
service.
— 19 —
KV-38DRC2 / 38DRC2C
4-1.  SETTING THE SERVICE ADJUSTMENT 
MODE
1.  Standby mode (Power off).
2.  Press the following buttons on the Remote Commander within one 
second of each other: 
 
DISPLAY  
 Channel  5  
 Sound Volume  +  
 Power
SERVICE ADJUSTMENT MODE VIEW
2150P-1 
+7 
SERVICE
SBOT 
 
 
TV
Device Item
Data Item
Register
Item
F/A FLAG:
CBA FLAG:
WSL: 0
READING THE MEMORY
1.  Enter into Service Mode.
2.  Press  0  on the Remote Commander.
3.  Press  ENTER  to read memory.
ADJUSTING THE PICTURE
1.  Enter into Service Mode
2.  Press  2  or  5  on the remote to select the device item.
3.  Press  1  or  4  on the remote to select an item.
4.  Press  3  or  6  on the remote to change the data.
5.  Press  MUTING  then  ENTER  to write into memory.
4-1.1. RESETTING THE DATA
 
Note:  Be careful when using the remote!  It will clear and re-initialize 
  
ALL NVM data including defl ection adjustment data if not reset 
  
properly as follows:
RESETTING THE DEFLECTION NVM DATA
1.  Enter into Service Mode.
2.  Press  7 , then  MENU , and then press  ENTER  on the remote.
RESETTING THE SYSTEM NVM DATA
1.  Enter into Service Mode.
2.  Press  7 , then  9 , and then press  ENTER  on the remote.
RESETTING THE SYSTEM NVM DATA
1.  Enter into Service Mode.
2.  Press  8  and then press  ENTER  on the remote.
4-2.  MEMORY WRITE CONFIRMATION 
METHOD
1.  After adjustment, pull out the plug from the AC outlet, then replace the 
plug in the AC outlet again.
2.  Turn the power switch ON and set to Service Mode.
3.  Call the adjusted items again to confi rm they were adjusted.
4-3.  REMOTE ADJUSTMENT BUTTONS AND 
INDICATORS
SECTION 4:  CIRCUIT ADJUSTMENTS
ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER
Use the Remote Commander (RM-Y184) to perform the circuit adjustments in this section.
Test Equipment Required:   1. Pattern generator   2. Frequency counter   3. Digital multimeter  4.  Audio oscillator
RM-Y184
WRITE
INTO MEMORY
ITEM UP
ITEM DOWN
TEST
RESET
DEVICE UP
DATA UP
DATA DOWN
DEVICE DOWN
EXECUTE
READ
MEMORY
— 20 —
KV-38DRC2 / 38DRC2C 
4-4. SERVICE DATA LISTS
Device Name
Device Reference 
Number
Slave Address
Comment
 # 1
3D-COMB
µPD64082
IC3501 / BC-board
B8h (W) & B9h (R)  W&R: Write & Read
 # 2-1
CXA2103-1 (Main)
IC3048 (Main) / B-board
9Ah
 # 2-2
CXA2103-2 (Sub)
IC3110 (Sub) / B-board
9Eh
 # 3-1
CXA2150P-1
 # 3-2
CXA2150P-2
 # 3-3
CXA2150P-3
 # 3-4
CXA2150P-4
 # 4-1
CXA2150D-1
 # 4-2
CXA2150D-2
 # 4-3
CXA2150D-3
 # 5
CXA2151
CXA2151Q
IC3001 / B-board
84h
 # 6
D-CONV
CXA8070P
IC5513 / D-board
DEh
 # 7
CXA2026
CXA2026AS
IC5511 / D-board
8Eh
 # 8
AP
BH3868FS
IC7001 / A-board
82h
 # 9
TRUS
NJM2180M
IC4101 / S-board
2Eh
 Controlled through CXA1315M ( IC4103 / S-board / 48h )
 # 10
MID1
CXD9509AQ
IC3408 / B-board
2Eh
 Controlled through MID-XA Micro ( IC3090 / B-board / 64h )
 # 11
MID2
CXD9509AQ
IC3408 / B-board
2Eh
 Controlled through MID-XA Micro ( IC3090 / B-board / 64h )
 # 12
MID3
CXD9509AQ
IC3408 / B-board
2Eh
 Controlled through MID-XA Micro ( IC3090 / B-board / 64h )
 # 13
MID5
CXD9509AQ
IC3408 / B-board
2Eh
 Controlled through MID-XA Micro ( IC3090 / B-board / 64h )
 # 14
OSD
M306V2ME-153FP
IC701 / A-board
60h
 DX1A-2001 System Micro {V1.0}
µPD64082
IC3501 / BC-board
B8h (W) & B9h (R)
CXA2103Q
IC3048 (Main) / B-board
9Ah
CXA2150Q
IC201 / A-board
86h
 # 16
ID1
CXD2085M
IC3603 / B-board
40h
IC3602 (Main) / B-board
68h (Main)
IC3601 (Sub) / B-board
6Ch (Sub)
 # 18
OP
M306V2ME-153FP
IC701 / A-board
60h
 DX1A-2001 System Micro {V1.0}
 # 19
ID
M306V2ME-153FP
IC701 / A-board
60h
 DX1A-2001 System Micro {V1.0}
86h
CXA2150Q
IC201 / A-board
IC201 / A-board
CXP85840A-039Q
SNNR
CXA2103Q
CXA2150Q
86h
DX1A-2001* Service List ------ Contents & Notes
Category Number & Name
 # 15
 # 17
CCD&VCHIP
 CCD&Vchip Micro (V2.14)
 DX1A-2001 CCD&Vchip Micros
 MB94918RPF-G-137-BND (MASK), Software Version 12/08/00, IC3090/B-board (Slave Address: 64h)
 CXP85840A-039Q (MASK), Software Version 2.14, IC3602/B-board (Main/Slave Address: 68h) & IC3601/B-board (Sub/Slave Address: 
 Note:
 * This service list is used for DX1A-2001 ONLY. Some service data is the same in DX1A-2001 & 2000, as noted in the data sheets.
 DX1A-2001 System Micro &
 Notes for Services
 DX1A-2001 MID-XA Micro
 M306V2ME-153FP (MASK), Software Version 1.0, IC701/A-board (Slave Adress: 60h)
The system micro name, software&patch versions, and the status of NVM devices are displayed only when in the service catergory 
(#19): ID.
— 21 —
KV-38DRC2 / 38DRC2C 
SERVICE DATA LISTS
Control Register
Function & Link
Data
Type
Data
Range
Comment
Standard
Non-standard
Standard
Non-standard
0
NRMD  Operation mode setting
0~3
0
1
3
3
1
YAPS
 Y-output correction
 (V-aperture compensation & Y-peaking filtering)
C
0~3
3
2
CLKS  System clock setting
C
0~3
1
Standard
Non-standard
Standard
Non-standard
3
NSDS  Selection for standard/non-standard signal processing
0~3
0
0
0
0
4
MSS
 Selection for inter-frame/inter-line processing
C
0~3
0
5
KILS
 Killer processing selection
C
0~3
1
6
CDL
 C-signal phase with respect to the Y-signal
 (Fine adjustment at 70 ns/step)
C
0~7
3
 NRMD Setting-based Control Table for DYCO, DYGA, DCCO, DCGA
NRMD = 0NRMD = 1
NRMD = 2
NRMD = 3
7
DYCO  DY detection coring level (Y motion detection coring)
0~15
2
2
2
2
8
DYGA  DY detection gain (Y motion detection gain) 
0~15
10
10
10
10
9
DCCO  DC detection coring level (C motion detection coring)
0~15
5
5
5
5
10 DCGA  DC detection gain (C motion detection gain) 
0~15
5
5
5
5
11 YNRL  Frame recersive YNR nonlinear filter limit level
C
0~3
1
12 CNRL  Frame recersive CNR nonlinear filter limit level
C
0~3
1
UHF/VHF
Video1~4
Video5&6
13 VTRH
 Hysteresis for Hsync non-standard signal detection
 (out-of-Hsync intra-field)
0~3
1
1
1
14 VTRR
 Sensitivity for Hsync non-standard signal detection
 (out-of-Hsync intra-field)
0~3
1
1
1
15 LDSR
 Sensitivity for frame non-standard signal detection
 (out-of-Hsync inter-frame)
0~3
2
2
2
VM = Off
VM = Low
VM = Mid
VM = High
16 VAPG  V-aperture compensation gai n
0~7
0
2
3
4
17
VAPI
 V-aperture compensation convergence point
0~31
4
4
4
SNNR = 0SNNR = 1
SNNR = 2
SNNR = 3
18
YPFT  Y peaking filter (BPF) center frequency
0~3
0
0
0
0
0
19 YPFG  Y peaking filter (BPF) gain
0~15
7
0
1
2
3
 Note:  The same 3D-COMB service data is used for DX1A-2001&2000. 
SVideo
UHF/VHF & CVideo
DX1A-2001&2000 SERVICE LIST (#1):   
3D-COMB / mPD64082
   
(Part-1/4)
VAPG1 Data Based on MENU/VM Setting
 Device Name:     
m
PD64082GF  { 3D-Comb Filter / NEC } / IC3501 (BC-board) / P/N: 8-759-594-44 (SB#: V7372)
 Slave Address:   B8h (Write Address) / B9h (Read Address)
 CVideo (CV): CVideo1~4 inputs
 SVideo (SV):  SVideo1~3 inputs
 C: Common data
 Video1~4:  CVideo1~4 & SVideo1~3 inputs
 Video5&6: YPbPr-480i/480p/1080i inputs
Data Initial/Average Setting
(32V&36V CRTs)
Register
No & Name
SVideo
UHF/VHF & CVideo
This setting continues to
the next page.
 SNNR Setting-based Control Table for YPFT & YHFG
SNNR Setting (-Offset)
8
 VM&SNNR Setting-based Control Table for VAPG & VAPI
 VAPG= VAPG1 - VAPG2
Register
No & Name
SNNR = 0SNNR = 1
SNNR = 2
SNNR = 3
 #16 VAPG (cont.)
0
0
0
0
Data Initial/Average Setting
(32V&36V CRTs)
Comment
DX1A-2001&2000 SERVICE LIST (#1):   
3D-COMB / mPD64082
   
(Part-2/4)
 Note:  The same 3D-COMB service data is used for DX1A-2001&2000. 
VAPG2 Data Based on SNNR/Offset-setting
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