DOWNLOAD Sony KV-HS29N90 Service Manual ↓ Size: 16.72 MB | Pages: 118 in PDF or view online for FREE

Model
KV-HS29N90
Pages
118
Size
16.72 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-hs29n90.pdf
Date
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– 36 –
KV-HS29/34/38N90
RM-999
3-3-3. NTSC RF Input
1. Enter the NTSC RF color bar (White & color 75%) signal.
2. Adjust with the same manner as 3-3-2. NTSC Video Input.
(i) SUB CONTRAST
Condition :
Category
Item
Data
SAJ
00
PIC
3F
02
COL
00
19
PIO
00
JGL
01
RGB
4
Adjusting Parameter :
LEFT screen
:
YCT
04 SCT
RIGHT screen
:
SYC
04 SCT
(ii) SUB HUE/SUB COL
Condition :
Category
Item
Data
SAJ
02
COL
22
16
HUO
07
JGL
01
RGB
07
Adjusting Parameter :
LEFT screen
:
YCT
03 SCL
00 TNT
RIGHT screen
:
SYC
03 SCL
00 TNT
VB3
VB4
VB1
VB2
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
GND
VR2
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
3-3-2. NTSC Video Input
1. Enter the NTSC video color bar (White & color 75%) signal.
2. Enter the service mode, and set respective items as follows.
3. Measure waveform, and each item is adjusted to become the
following figure.
4. Press “
 (SWAP)” button on the commander, when the left
screen and the right screen are changed.
5. After adjustment finished, press “
 
(MUTE)” + “-” but-
ton to write the data to the NVM.
(i) SUB CONTRAST
Condition :
Category
Item
Data
SAJ
00
PIC
3F
02
COL
00
19
PIO
00
Adjusting Parameter :
LEFT screen
:
YCT
08 YOL
RIGHT screen
:
SYC
08 YOL
(ii) SUB HUE/SUB COL
Condition :
Category
Item
Data
SAJ
02
COL
22
16
HUO
07
Adjusting Parameter :
LEFT screen
:
YCT
0A COL
00 TNT
RIGHT screen
:
SYC
0A COL
00 TNT
GND
VR2
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
VB3
VB4
VB1
VB2
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
– 37 –
KV-HS29/34/38N90
RM-999
3-3-5. PAL RF Input
1. Enter the PAL RF color bar (White & color 75%) signal.
2. Adjust with the same manner as 3-3-2. NTSC Video Input.
(i) SUB CONTRAST
Condition :
Category
Item
Data
SAJ
00
PIC
3F
02
COL
00
19
PIO
00
JGL
01
RGB
04
Adjusting Parameter :
LEFT screen
:
YCT
04 SCT
RIGHT screen
:
SYC
04 SCT
(ii) SUB HUE/SUB COL
Condition :
Category
Item
Data
SAJ
02
COL
22
JGL
01
RGB
4
Adjusting Parameter :
LEFT screen
:
YCT
03 SCL
RIGHT screen
:
SYC
03 SCL
GND
VR2
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
VB3
VB4
VB1
VB2
VB1 = VB3 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
3-3-4. PAL Video Input
1. Enter the PAL video color bar (White & color 75%) signal.
2. Adjust with the same manner as 3-3-2. NTSC Video Input.
(i) SUB CONTRAST
Condition :
Category
Item
Data
SAJ
00
PIC
3F
02
COL
00
19
PIO
00
Adjusting Parameter :
LEFT screen
:
YCT
04 SCT
RIGHT screen
:
SYC
04 SCT
(ii) SUB HUE/SUB COL
Condition :
Category
Item
Data
SAJ
02
COL
22
Adjusting Parameter :
LEFT screen
:
YCT
03 SCL
RIGHT screen
:
SYC
03 SCL
GND
VR2
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
VB3
VB4
VB1
VB2
VB1 = VB3 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
– 38 –
KV-HS29/34/38N90
RM-999
SECTION  4
SAFETY  RELATED  ADJUSTMENT
4-1. HV  REGULATION  ADJUSTMENT
When replacing the following components marked with 
]
on the schematic diagram, always check hold-down volt-
age and if necessary re-adjust.
4-2-1. HV Protector Adjustment
(1) Input the all white signal.
(2) Turn RV8001 fully clockwise.
(3) Adjust RV8002 so that the HV voltage meets the
specification below.
KV-HS34/38 : 36.0 ±0.1 kV
KV-HS29      : 34.3 ±0.1 kV
(4) Turn RV8001 slowly and stops its rotation when the
voltage becomes fold-down.
4-2-2. HV Protector Check
(1) Input the all white signal.
(2) Adjust RV8002 so that the HV voltage meets the
specification below.
KV-HS34/38 : 35.0 ±0.1 kV
KV-HS29      : 33.3 ±0.1 kV
*: Check that the fold-down is not activated.
*: Measure the positive terminal (+) of C8002, and
check that it is Low.
(3) Short between both leads of C8006.
(4) Adjust RV8002 so that the HV voltage meets the
specification below.
KV-HS34/38 : 36.0 ±0.1 kV
KV-HS29      : 34.3 ±0.1 kV
(5) Open the positive terminal (+) of C8006 from short
circuit.
Check that the hold-down is activated.
(6) Short the positive terminal (+) of C8006.
(7) Apply 5.5 V between both leads of C8016.
Check the HV falls down.
(8) Disconnect the 5.5 V from both leads of C8016.
Check that the HV returns.
(9) After the check is finished, put the VR cover on
RV8001, and fixed it with RTV.
4-2. HV  HOLD-DOWN  ADJUSTMENT
When replacing the following components marked with 
]
on the schematic diagram, always check hold-down volt-
age and if necessary re-adjust.
[ : VR8001
] : C8016, C8037,
D8020,
IC8001, IC8002,
Q8035, Q8043,
R8042, R8072, R8078, R8079, R8091, R8095
T8005(FBT),
D board
[ : VR8002
] :  IC8004, IC8005, IV8006
PH8003
R8014, R8015, R8017, R8128, R8129, R8131,
  T8005(FBT)
(1) Input all black signal, and put into Full mode and
Standard.
Be sure to perform the HV adjustment within 1 to 3
minutes after the power on.
(2) Adjust RV8002 so that the HV voltage meets the
specification below.
KV-HS34/38 : 32.3 ±0.1 kV
KV-HS29      : 30.3 ±0.1 kV
(3) After the check is finished, put the VR cover on
RV8002, and fixed it with RTV.
Fig. 4-1
RTV KE490
VR8001, VR8002
– 39 –
KV-HS29/34/38N90
RM-999
4-3. +B MAX VOLTAGE CONFIRMATION
(1) Supply Power Voltage
Apply the following voltage between pins 1 and 5 of
CN6604.
(AC IN)
(Area)
110 V
110 VAC
(2) +B Voltage Check
Check that the voltage between both leads of C6688
meets the specification below.
+B Voltage = 136.3 V or less
4-4. +B OVP CONFIRMATION
(1) OVP Check
Disconnect the 220 V AC which are applied between
pin1and5 of CN6604, and apply 145 +/-1V to both
leads of C6688.
Apply 220 V AC between pins 1 and 5 of CN6604.
(Input the voltage to the dummy F Board.)
Check that the voltage of pin 7 of CN6101 (Main 12 V)
is less than or equal 0.8 V.
(2) Cancellation of Rach
Disconnect the 220 V AC which are applied between
pins 1 and 5 of CN6604. (Be sure to turn off the AC
power more than 1 second.)
(3) Return of OVP
Apply 220 V AC between pins 1 and 5 of CN6604.
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