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Model
XV-Z1E
Pages
42
Size
740.03 KB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Text - 1-42
File
xv-z1e.pdf
Date
PREV: Sharp XV-Z12000 (serv.man35) User Manual / Operation Manual

Sharp XV-Z1E Service Manual ▷ View online

XV-Z1E/A
21
ELECTRICAL ADJUSTMENT
NOTE : The settings have been factory-adjusted to their best points. If any of them gets out of spec or after
any relevant part has been replaced, make the related adjustment.
Step
Adjustment Position
Adjustment Conditions
Adjustment Method
1
PLL
(NTSC)
(R4314, R4318)
1. Receive the monoscope
pattern signal of NTSC.
2. Connect the oscilloscope to
TP4301 and TP4302.
»
Adjust center level and pulse width of R4314/R3418.
2
PLL
(PAL)
(R4313, R4320)
1. Receive the monoscope
pattern signal of PAL.
2. Connect the oscilloscope to
TP4301 and TP4302.
»
Adjust center level and pulse width of R4313/R4320,
same as NTSC.
3
VCO primary
OSC
(L1001)
1. No signal.
2. Short the TP1001 and GND.
3. Connect the frequency
counter to TP1002 and
GND.
»
Adjust frequency of the core of L1001
fo : 15.625 ±0.01kHz
4
H-center
(NTSC)(DAC)
1. Receive the monoscope
pattern signal of NTSC.
2. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : H-CENT+9
setting.
Group : TEST
Subject : H-POS
»
Using the Operation key switch 
' "
, adjust same as
right and left overscan.
Overscan : 93~95%
5
H-center
(PAL)(DAC)
1. Receive the monoscope
pattern signal of PAL.
2. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : PAL-H-CENT +9
setting.
Group : TEST
Subjec : H-POS
»
Using the Operation key switch 
' "
, adjust same as
right and left overscan.
Overscan : 93~95%
TP4302
TP4301
1µ
Center
GND
Center
GND
XV-Z1E/A
22
Step
Adjustment Position
Adjustment Conditions
Adjustment Method
7
Contrast
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : SUB-R 0
SUB-G 0
SUB-B 0
setting.
4. Group : VIDEO 1
Subject : CONT
»
Using the Operation key switch 
' "
, adjust level be-
tween black level and 100% white level.
1.60 ±0.05Vp-p
9
Bright of
component
mode
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : C-BRIGHT
»
Using the Operation key swsitch 
' "
, adjust the black
level as same as clamp level.
6
Reference black
Level
1. Receive the 10 step gray
scale signal. (NTSC or PAL)
2. Connect the oscilloscope to
pin (3) of P1501.
3. Group : VIDEO 5
Subject : T-BRT
»
Using the Operation key switch 
' "
, adjust the black
level as same as pedestal level.
8
Contrast of
component
mode
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : C-CONT
»
Using the Operation key switch 
' "
, adjust level be-
tween black level and 100% white level.
1.55 ±0.05Vp-p
Pedestal
Black
XV-Z1E/A
23
Step
Adjustment Position
Adjustment Conditions
Adjustment Method
11
D/A Output level
(NTSC) (DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (5) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : DAV
»
Using the Operation key switch 
' "
, adjust level be-
tween black and 100% white level.
0.6 ±0.05Vp-p
13
Signal center
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (2) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 2
Subject : SIG CTR
»
Using the Operation key switch 
' "
, adjust level be-
tween signal center and GND.
DC 7.0 ±0.1Vp-p
10
AGC
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscillosope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : AGCADJ
»
Using the Operation key switch 
' "
, adjust level be-
tween black and 100% white level.
1.2 ±0.05Vp-p
12
D/A Output level
(PAL) (DAC)
1. Receive the 10 step gray
scale signal of PAL.
2. Connect the oscilloscope to
pin (5) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : DAVREF
»
Using the Operation key switch 
' "
, adjust level be-
tween black and 100% white level.
0.6 ±0.05Vp-p
Signal center
XV-Z1E/A
24
Step
Adjustment Position
Adjustment Conditions
Adjustment Method
15
Gain
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (2) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 2
Subject : DRIVE 1
4. Cinnect the oscilloscope to
pin (1) of P4303.
Subject : R-DRIVE
5. Connect the oscilloscope to
pin (3) of P4303.
Subject : B-DRIVE
»
Using the Operation key switch 
' "
, adjust level be-
tween black and 100% white level.
1.4 ±0.05Vp-p
(DRIVE1, R-DRIVE, B-DRIVE)
14
Reference level
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (2) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 2
Subject : SUB-BIAS
4. Connect the oscilloscope to
pin (1) of P4303.
Subject : R-BIAS
5. Connect the oscilloscope to
pin (3) of P4303.
Subject : B-BIAS
»
Using the Operation key switch 
' "
, adjust level be-
tween signal center and reference level.
DC 2.0 ±0.1Vp-p
(SUB-BIAS, R-BIAS, B-BIAS)
16
BRIGHT
(DAC)
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
(2-BRIGHT)(1-R-BRT)(3-
B-BRT) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : BRIGHT(G)
: R-BRT
: B-BRT
»
Using the Operation key switch 
' "
, adjust level be-
tween signal center and 100% white level.
2.55 ±0.1Vp-p
Reference
level
Signal center
Signal center
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