Sharp PZ-50HV2E (serv.man8) Service Manual ▷ View online
20
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Display example of the twelfth page
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
11
12
13
14
15
16
17
18
ABL V
2
1 / 1 3
PUT1 No S I G
N
I
I DE
1 1 8
6 0 PC
O
ABL V I DE
1 2 2
5 0
O
VOF
ADJ
1 3 1
S
VSU
ADJ
1 2 8
S
XSU
ADJ
0 8
SB
XSU
ADJ
0 8
SG
YSU
ADJ
0 8
SB
YSU
ADJ
0 8
SG
No.
Item
Adjustable Range
Shipping Setting
Storage Place
1
Electric power setting at the PC, VIDEO 60Hz
0 to 255
Factory adjustment value
PDP
2
Electric power setting at VIDEO 50Hz
0 to 255
Factory adjustment value
PDP
3
VOFS voltage setting
0 to 255
Factory adjustment value
PDP
4
VSUS voltage setting
0 to 255
Factory adjustment value
PDP
5
SUS_B timing setting of X drive
0 to 15
Factory adjustment value
PDP
6
SUS_G timing setting of X drive
0 to 15
Factory adjustment value
PDP
7
SUS_B timing setting of Y drive
0 to 15
Factory adjustment value
PDP
8
SUS_G timing setting of Y drive
0 to 15
Factory adjustment value
PDP
Adjustment item of this page is related in damage of the set when mistakes adjustment. When adjustment is needed, be enough
careful to adjustment.
careful to adjustment.
Caution in the electric power setting (No. 1 and 2) adjustment:
Adjustment value is reflected without relation in input signal during adjustment to the actual PDP.
For example, when operate a adjustment value of [ABL VIDEO 60 PC] during PAL input, switch to the adjustment value operation of [ABL
VIDEO 60 PC] while displaying PAL in the actual PDP. This is temporary.
After adjustment, it becomes the [ABL VIDEO 50] operation in the PAL input after restarted in the normal mode. It becomes an operation of the
[ABL VIDEO 60PC] adjustment value after adjustment in the NTSC input.
Adjustment value is reflected without relation in input signal during adjustment to the actual PDP.
For example, when operate a adjustment value of [ABL VIDEO 60 PC] during PAL input, switch to the adjustment value operation of [ABL
VIDEO 60 PC] while displaying PAL in the actual PDP. This is temporary.
After adjustment, it becomes the [ABL VIDEO 50] operation in the PAL input after restarted in the normal mode. It becomes an operation of the
[ABL VIDEO 60PC] adjustment value after adjustment in the NTSC input.
∗
: Be careful so that there is the case that page constitution is different.
21
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Display example of the thirteenth page
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
11
12
13
14
15
16
17
18
V I
PC
D
D
E
E
O
NEGAT
2
1 / 1 3
PUT1 No S I G
N
I
DR
0 0
VE MO
I
DE
DR VE MO
DE
MO
I
VE
I
PATTE N
R
ENHAN E
C
BR I GHT
FREQ
MASK
FULL MASK
MASK
V
0 3
OFF
OFF
OFF
OFF
OFF
OFF
5 0
No.
Item
Adjustable Range
Shipping Setting
Storage Place
1
Drive mode selection at VIDEO
0 to 5
0
PDP
2
Drive mode selection at PC
0 to 5
3
PDP
3
Negative positive inversion mode
OFF/ON
OFF
PDP
4
Bright enhance
OFF/ON
OFF
None
5
Refresh rate at mask signal generation
50/60/70
–
None
6
Pattern mask signal generation
OFF/
OFF
PDP
7
Full mask signal generation
OFF/
OFF
PDP
Caution in the mask (generation test signal screen in the PDP inside) signal generation:
• A pattern mask and a full mask can use only either.
Therefore, turn a full mask to OFF when uses a pattern mask. Also turn a pattern mask to OFF when uses a full mask.
• A pattern mask and a full mask are test signal screens occurring together in the PDP inside. Therefore, in the mask signal generation, it
cannot confirm video inputting from OSD and the outside.
When release mask setting or change of each setting or perform the confirmation of the adjustment or external input signal, perform key
operation of the main unit button or the remote control unit.
When operated something, stop the generation of the mask signal just after that for two seconds. Therefore, modification and adjustment of
each setting and confirmation of the external input signal are possible.
• A pattern mask and a full mask can use only either.
Therefore, turn a full mask to OFF when uses a pattern mask. Also turn a pattern mask to OFF when uses a full mask.
• A pattern mask and a full mask are test signal screens occurring together in the PDP inside. Therefore, in the mask signal generation, it
cannot confirm video inputting from OSD and the outside.
When release mask setting or change of each setting or perform the confirmation of the adjustment or external input signal, perform key
operation of the main unit button or the remote control unit.
When operated something, stop the generation of the mask signal just after that for two seconds. Therefore, modification and adjustment of
each setting and confirmation of the external input signal are possible.
∗
: Be careful so that there is the case that page constitution is different.
22
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
ADJUSTMENT REQUIRED WHEN THE SET IS REPAIRED OR REPLACED
DIGITAL VIDEO Assy
When repaired
No adjustment required.
MR INTERFACE Assy
• Set slide SW according to page 244.
When replaced
SW POWER SUPPLY Module
When replaced
No adjustment required.
• Remove IC1204 (24LC04(1) SN-TBB) from the former
PC Board to replace, and install it to the new PC Board.
Y DRIVE Assy
When repaired
When replaced
1. VOFS/VH/IC5V voltage adjustment
2. Timing adjustment of pulse module
2. Timing adjustment of pulse module
1. SUSB ground timing adjustment
2. Panel white balance adjustment
2. Panel white balance adjustment
1. SUSB ground timing adjustment
2. Panel white balance adjustment
2. Panel white balance adjustment
X DRIVE Assy
When repaired
When replaced
1. VRN voltage adjustment
2. Timing adjustment of pulse module
2. Timing adjustment of pulse module
DIGITAL VIDEO
Assy
Assy
X DRIVE
Assy
Assy
Y DRIVE
Assy
Assy
MR INTERFACE
Assy
Assy
SW POWER SUPPLY
Module
Module
Fig. 1 PC Board Location (rear side view)
23
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
VOFS (Offset voltage) adjustment
Method 1
1. Write down a adjustment value of VOFS ADJ in the factory mode.
2. Set this adjustment value to center (128).
3. Adjust VR2701 so that the voltage between K2701 (VOFS) and K2703 (SUS GND) becomes
Method 1
1. Write down a adjustment value of VOFS ADJ in the factory mode.
2. Set this adjustment value to center (128).
3. Adjust VR2701 so that the voltage between K2701 (VOFS) and K2703 (SUS GND) becomes
45V.
4. Return it to the value that wrote down a adjustment value of V-OFFSET in step 1.
Method 2
1. Read the adjustment value of VOFS ADJ in the factory mode.
2. Adjust VR2701 so that the voltage between K2710 (VOFS) and K2703 (SUS GND) becomes
1. Read the adjustment value of VOFS ADJ in the factory mode.
2. Adjust VR2701 so that the voltage between K2710 (VOFS) and K2703 (SUS GND) becomes
following voltage
±
0.5V.
VH (voltage for scan IC) Adjustment
Adjust so that the voltage between K2716 (VH) and K2720 (PSUS) becomes 103V
Adjust so that the voltage between K2716 (VH) and K2720 (PSUS) becomes 103V
±
0.5V.
PSUS (=GNDH) is a floating GND and the electric potential is different from that of chassis
GND. Be sure not to short-circuit PSUS (=GNDH) and another GND, because that may
damage the unit.
GND. Be sure not to short-circuit PSUS (=GNDH) and another GND, because that may
damage the unit.
The symptom is case of mis-adjustment
If the VH adjustment is not performed properly, dots like blinking luminance points appear. If
deviated greatly from the right adjustment point, panel will light white.
If the VH adjustment is not performed properly, dots like blinking luminance points appear. If
deviated greatly from the right adjustment point, panel will light white.
Input Signal
Adjusting Point
Adjusting Method
White 100%
VR2701 (VOFS)
(Y DRIVE Assy)
(Y DRIVE Assy)
VR2703 (VH)
(Y DRIVE Assy)
(Y DRIVE Assy)
IC5V Adjustment
Adjust so that the voltage between K2707 (IC5V) and K2720 (PSUS) becomes 5.0V
Adjust so that the voltage between K2707 (IC5V) and K2720 (PSUS) becomes 5.0V
±
0.1V.
PSUS (=GNDH) is a floating GND and the electric potential is different from that of chassis
GND. Be sure not to short-circuit PSUS (=GNDH) and another GND, because that may
damage the unit.
GND. Be sure not to short-circuit PSUS (=GNDH) and another GND, because that may
damage the unit.
The symptom is case of mis-adjustment
If the VOFS Voltage adjustment is not performed properly, dots like blinking luminance points
appear. If deviated greatly from the right adjustment point, panel will light white.
If the VOFS Voltage adjustment is not performed properly, dots like blinking luminance points
appear. If deviated greatly from the right adjustment point, panel will light white.
VR2702 (IC5V)
(Y DRIVE Assy)
(Y DRIVE Assy)
Note : Be sure to measure between specified test points.
Input
Command
DAC
Output
Setting
Voltage
Input
Command
DAC
Output
Setting
Voltage
VOF000
0.4
25
VOF134
2.599212598
45.94488
VOF006
0.4984375
25.9375
VOF141
2.71496063
47.04724
VOF013
0.61328125
27.03125
VOF147
2.814173228
47.99213
VOF019
0.71171875
27.96875
VOF153
2.913385827
48.93701
VOF026
0.8265625
29.0625
VOF160
3.029133858
50.03937
VOF032
0.925
30
VOF166
3.128346457
50.98425
VOF038
1.0234375
30.9375
VOF172
3.227559055
51.92913
VOF045
1.13828125
32.03125
VOF179
3.343307087
53.0315
VOF051
1.23671875
32.96875
VOF185
3.442519685
53.97638
VOF058
1.3515625
34.0625
VOF191
3.541732283
54.92126
VOF064
1.45
35
VOF198
3.657480315
56.02362
VOF070
1.5484375
35.9375
VOF204
3.756692913
56.9685
VOF077
1.66328125
37.03125
VOF211
3.872440945
58.07087
VOF083
1.76171875
37.96875
VOF217
3.971653543
59.01575
VOF090
1.8765625
39.0625
VOF223
4.070866142
59.96063
VOF096
1.975
40
VOF230
4.186614173
61.06299
VOF102
2.0734375
40.9375
VOF236
4.285826772
62.00787
VOF109
2.18828125
42.03125
VOF242
4.38503937
62.95276
VOF115
2.28671875
42.96875
VOF249
4.500787402
64.05512
VOF122
2.4015625
44.0625
VOF255
4.6
65
VOF128
2.5
45
ADJUSTMENT
VOFS/VH/IC5V Voltage Adjustment
Click on the first or last page to see other PZ-50HV2E (serv.man8) service manuals if exist.