Sharp PZ-50HV2E (serv.man8) Service Manual ▷ View online
26
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Use this sustain pulse
and adjust.
and adjust.
Magnify 6SF block
Magnify the adjustment waveform
Magnify 6SF block
CH1 : Y SUSOUT Under (K2203), 50V/div
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH1 : Y SUSOUT Under (K2203), 50V/div
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH1 : X SUSOUT Under (K3106), 50V/div
CH2 : X SUSOUT Upper (K3105), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : X SUSOUT Upper (K3105), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
Y DRIVE SUSOUT waveform
X DRIVE SUSOUT waveform
Measuring point of waveform
Waveform coarse adjustment
Measuring Waveform of Pulse Module Timing Adjustment
Timing adjustment of the pulse module control signal adjusts with the sustain pulse of eighth pulse (X DRIVE) and
the ninth pulse (Y DRIVE) from the back of 6SF.
the ninth pulse (Y DRIVE) from the back of 6SF.
Measure the SUSOUT waveform
1SF
2SF 3SF 4SF 5SF 6SF 7SF
1ms/div
5
µ
s/div
1SF
2SF 3SF 4SF 5SF 6SF 7SF
1ms/div
5
µ
s/div
• Perform adjustment of waveform with a black mask screen.
• It is easy to adjust when turned field AB offset to OFF (RS-232C
command: OCN) in adjustment.
• It is easy to adjust when turned field AB offset to OFF (RS-232C
command: OCN) in adjustment.
Note:
• Sampling rate of oscilloscope sets it more than 500MS/s in order
to perform ns order adjustment.
• Collecting calibration of probe before adjustment by all means.
• Sampling rate of oscilloscope sets it more than 500MS/s in order
to perform ns order adjustment.
• Collecting calibration of probe before adjustment by all means.
• Connect GND of probe measuring waveform to SUSGND terminal
by all means.
• Precise waveform is not displayed, and an adjustment gap may
occur that does not collect GND properly.
by all means.
• Precise waveform is not displayed, and an adjustment gap may
occur that does not collect GND properly.
When took waveform be each drive Assy unit, measure it at the
fourth sustain pulse from the back except for a large width sustain
pulse.
Therefore, when measured both waveform of the X and Y drives
together, it becomes the sustain pulse of 8 and 9 pulses from the
back.
fourth sustain pulse from the back except for a large width sustain
pulse.
Therefore, when measured both waveform of the X and Y drives
together, it becomes the sustain pulse of 8 and 9 pulses from the
back.
When there is a gap with waveform of CH1 / CH2 of the part which
enclosed in the following circle, adjust required VR to overlap the
waveform.
enclosed in the following circle, adjust required VR to overlap the
waveform.
Adjust with SUS-B
Adjust with SUS-U
Adjust with SUS-G
1ms/div
500ns/div
Use this sustain pulse
and adjust.
and adjust.
27
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
CH1 : Y SUSOUT Under (K2203), 50V/div
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : Y SUSOUT Upper (K2212), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH1 : Y SUS-D Under (K2225), 50V/div
CH2 : Y SUS-D Upper (K2207), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : Y SUS-D Upper (K2207), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH1 : Y SUS-U Under (K2224), 50V/div
CH2 : Y SUS-U Upper (K2220), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : Y SUS-U Upper (K2220), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
SUS-D Adjustment (Y DRIVE)
Waveform Confirmation in Adjustment completion
Measure the SUSOUT waveform
SUS-U Adjustment (Y DRIVE)
1ms/div
5
µ
s/div
1ms/div
5
µ
s/div
1ms/div
500ns/div
1ms/div
10ns/div
1ms/div
500ns/div
Confirm it to waveform of CH1 / CH2 of the part which enclosed in
the following circle whether there is not a large gap.
(A gap of the quantity that shifts 20nS and adjusted remains.)
the following circle whether there is not a large gap.
(A gap of the quantity that shifts 20nS and adjusted remains.)
When adjust in the power supply ON state, change so that the
quantity of gap that adjusted by temperature-rise of the pulse
module becomes small.
Therefore, perform high power OFF (RS-232C command: DRF)
except measurement time of waveform when adjusts, and
adjustment error by temperature-rise does not occur.
quantity of gap that adjusted by temperature-rise of the pulse
module becomes small.
Therefore, perform high power OFF (RS-232C command: DRF)
except measurement time of waveform when adjusts, and
adjustment error by temperature-rise does not occur.
20 - 25ns
1ms/div
200ns/div
Lower PM
Upper PM
Lower PM
Upper PM
1ms/div
10ns/div
20 - 25ns
Caution:
Not absolutely mistaking upper
and lower of waveform.
Not absolutely mistaking upper
and lower of waveform.
Magnify 6SF block
Magnify 6SF block
Magnify 6SF block
Magnify 6SF block
Magnify the adjustment waveform
Magnify 6SF block
Magnify 6SF block
Magnification
Magnification
Magnification
Magnification
28
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
SUS-B Ground Timing Adjustment
It is necessary to readjust this adjustment when replaced the X or Y DRIVE Assy and the pulse module.
Measurement point and method
Measurement point of waveform of X and Y DRIVE Assy in timing adjustment is test pin of SUSOUT of the pulse module of
bottom of the main unit.
X DRIVE Assy : K3106 Y DRIVE Assy : K2203
Measurement screen : White mask
bottom of the main unit.
X DRIVE Assy : K3106 Y DRIVE Assy : K2203
Measurement screen : White mask
The measurement is easy to perform when turns field AB alternation to OFF. (RS-232C command: OCN)
Measure a sustain pulse of the fourth pulse (X DRIVE) and the fifth pulse (Y DRIVE) from the back of the fourth FS, and
adjust. In the start section of this sustain pulse, waveform has inflection point with the timing when SUS-B becomes ON.
Adjust so that the voltage of this inflection point is the nearest to 150V and do not become less than 150V.
Adjustment parameter
X DRIVE: XSUSB (RS-232C command : XSB)
Y DRIVE: YSUSB (RS-232C command : YSB)
adjust. In the start section of this sustain pulse, waveform has inflection point with the timing when SUS-B becomes ON.
Adjust so that the voltage of this inflection point is the nearest to 150V and do not become less than 150V.
Adjustment parameter
X DRIVE: XSUSB (RS-232C command : XSB)
Y DRIVE: YSUSB (RS-232C command : YSB)
Note:
• Connect GND of probe measuring waveform to SUSGND terminal by all means.
• Precise waveform is not displayed, and an adjustment gap may occur that does not collect GND properly.
• Connect GND of probe measuring waveform to SUSGND terminal by all means.
• Precise waveform is not displayed, and an adjustment gap may occur that does not collect GND properly.
Waveform in the measurement
CH1 : Y SUSOUT (K2203), 50V/div
CH2 : X SUSOUT (K3106), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
CH2 : X SUSOUT (K3106), 50V/div
CH4 : YPR-U1 (K2038)- Trigger, 5V/div
Trigger : 2msec delay
Rst
1ms/div
X
X
X
X
X
X
Y
Y
Y
Y
Y
Y
5
µ
s/div
Magnify 4SF block
Measure a waveform of this section and adjust.
Magnify the fourth pulse sustain pulse (XSUSOUT waveform) from the back of the above waveform.
1SF
2SF
3SF
4SF
OK
NG
150V Line
GND
50V/div
100msec/div
50V/div
100msec/div
150V Line
This broken section moves by
changing the adjustment
parameter.
changing the adjustment
parameter.
Become less than 150V.
→
NG
29
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
VR2702
(IC5V_ADJ)
VR2201
(SUS_G_ADJ)
VR2202
(SUS_B_ADJ)
VR2203
(SUS_D_ADJ)
VR2204
(SUS_U_ADJ)
K2205
K2004
K2001
K2002
K2003
K2005
K2009
K2013
K2010
K2011
K2226
(SUS_U)
K2212
(SUSOUTB)
K2225
(SUS_D)
K2224
(SUS_U)
K2203
(SUSOUTA)
K2227
(SUS_D)
K2218
(1/2 VSUS)
K2214
(SUS_G)
K2215
(SUS_B)
K2217
(SUS_U)
K2716
(VH)
K2720
(PSUS)
K2717
(VH CONT)
K2216
(SUS_D)
VR2703
(VH_ADJ)
K2715
(YDC_DC_PD)
K2718
(VH UVP)
K2719
(VH OVP)
K2708
(VOFS)
K2705
(SUSGND)
K2702
(VSUS)
K2709
K2703
(SUSGND)
VR2701
K2222
K2211
K2710
(VOFS)
K2712
(VOFSUVP)
K2221
(+15V)
K2045
K2049
K2047
K2047
K2044
K2050
K2048
K2046
K2048
K2046
K2012
(PN MUTE)
K2038
(YPR_U1)
K2040
(YCP_MSK)
K2053
(SOFT_D)
K2041 (OFS)
K2039 (YSUS_MSK)
K2037 (YSUS_G)
K2028 (YSUS_U)
K2028 (YSUS_U)
K2021
(YPR_U2)
K2029
(YSUS_D)
K2027
(YSUS_B)
K2024
(DGND)
K2101
(DEW_DET)
K2043
(DGND)
K2008
(DGND)
K2007
(DGND)
K2006
(+5V)
K2707
(IC5V)
(IC5V)
K2714
(GNDHS)
K2704
(VF-)
K2701
(VF+)
K2706
(+14V)
K2711
(-8V)
K2713
(IC5V UVP)
VR3200
(SUS-G)
VR3201
(SUS-B)
VR3202
(SUS-D)
VR3203
(SUS-U)
K3103
(VCP_PD)
K3104
(+5V)
K3001
(+5V)
K3003
(XSUS-B)
K3015
(XSUS-MSK)
K3017
(XCP-MSK)
K3012
(XSUS-D)
K3014
(XNR-D1)
K3025
K3007
K3010
(XNR-U)
K3008
(PN_MUTE)
K3021
K3022
K3011
K3704
(VRN. CNT)
K3703
(SUS. GND)
K3701
(VSUS)
K3029
K3006
K3009
K3030
K3705
VRN UVP)
K3706
(X DC-DC PD)
K3708
(VRN_OVP)
VR3701
(VRN. ADJ)
K3707
(VRN)
K3702
(SUS. GND)
K3213
(1/2VSUS)
K3214
(SUSGND)
K3205
(SUS_D)
K3204
(SUS_U)
K3106
(SUSOUT_B)
K3102
(XNR_PD)
K3203
(1/2VSUS)
K3201
(SUSGND)
Adjusting Points
Y DRIVE Assy
X DRIVE Assy
K3108
(SUS_D)
K3200
(SUS_U)
K3105
(SUSOUTA)
K3004 (XSUS-U)
K3013 (XSUS-G)
K3018 (XNR-D2)
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