Sharp PZ-50HV2E (serv.man34) Service Manual ▷ View online
41
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
AC IN
100 - 240V
Power Factor
Control
VSUS DC/DC
Converter
VOFS DC/DC
Converter
VADR DC/DC
Converter
6.5V DC/DC
Converter
(6.5V, 13.5V, -9V)
15V DC/DC
Converter
(15V, 12V)
ST-BY
Power Supply
STB5V
+B395V
VSUS
13.5V
12V
-9V
VOFS
-45V
VH DC/DC
Converter
VH
130V
IC5V, VF12V
DC/DC
Converter
IC5V
VF12V
VADR
61V
VRN DC/DC
Converter
VRN
-300V
225V
SW POWER SUPPLY MODULE
Y DRIVE ASSY
X DRIVE ASSY
15V DC/DC
Converter
(5V, 3.3V, 2.5V)
3.3V
2.5V
2.5V
5.0V
DIGITAL VIDEO ASSY
Block diagram for Power supply section
Supplementary information
1. Power on/off switch for the large-signal system (SW102)
Function: Only the power for the small-signal system
Function: Only the power for the small-signal system
(15V, 12V, 6.5V, 13.5V, and -9V) is on, and the
power for the large-signal system (VSUS, VADR) is
off.
power for the large-signal system (VSUS, VADR) is
off.
Usage:
Use when only an operational check for the small-
signal system is required.
signal system is required.
Supplementary information:
When this switch is to be used, the wires of pin 5
(DIG, ADR, and PD) of the P2 connector of the
power-supply module should be disconnected to
prevent the PD circuit from operating. To turn the
power of the large-signal system off without using
this switch, operation from an external PC through
RS-232C commands "DRF" is basically required. In
this case, the above procedure is not required, as
the PD circuit is muted by software.
(DIG, ADR, and PD) of the P2 connector of the
power-supply module should be disconnected to
prevent the PD circuit from operating. To turn the
power of the large-signal system off without using
this switch, operation from an external PC through
RS-232C commands "DRF" is basically required. In
this case, the above procedure is not required, as
the PD circuit is muted by software.
3. Temperature compensation of the VOFS voltage for
the drive system
Function: Control the power supply voltage mentioned
above according to temperature. (Temperature
compensation works so that the voltage is
lowered on the lower- temperature side, and is
raised on the higher-temperature side.)
compensation works so that the voltage is
lowered on the lower- temperature side, and is
raised on the higher-temperature side.)
Purpose: To improve the yield by compensating the
temperature characteristics of the panel.
Supplementary information:
For this model, temperature compensation is
perform-ed only for the VOFS voltage, and not for
the VSUS voltage, and it is controlled by
software.
perform-ed only for the VOFS voltage, and not for
the VSUS voltage, and it is controlled by
software.
4. When a fuse blows
• If a fuse blows, never turn the power on again only after
• If a fuse blows, never turn the power on again only after
replacing the fuse. (In most cases, the fuse itself did not
have any problem. So as long as factors of overcurrent
have not been removed, chances of destruction increase
every time the power is turned on. In the worst case,
about a dozen parts may be destroyed.)
have any problem. So as long as factors of overcurrent
have not been removed, chances of destruction increase
every time the power is turned on. In the worst case,
about a dozen parts may be destroyed.)
• Principally, the whole power-supply module must be
replaced.
5. Voltage adjustment of the panel drive
As this model employs the electronic VR system for the
VSUS and VOFS voltages, and as the voltage-adjustment
data are stored in the DIGITAL assembly, voltage
adjustment of the panel drive is not necessary when the
power-supply modules are changed. (For VADR, VH, and
VRN, adjustments with semifixed VR controls are
necessary.)
For this model, as the power-supply block has been
developed and designed by an outside vendor, at the point
you know which module is a cause of failure (through
diagnosis described elsewhere in this manual), change the
corresponding modules, and do not diagnose or repair the
module.
Similarly, the switches and the semifixed VRs inside the
power-supply module must not be adjusted without a
special reason.
As this model employs the electronic VR system for the
VSUS and VOFS voltages, and as the voltage-adjustment
data are stored in the DIGITAL assembly, voltage
adjustment of the panel drive is not necessary when the
power-supply modules are changed. (For VADR, VH, and
VRN, adjustments with semifixed VR controls are
necessary.)
For this model, as the power-supply block has been
developed and designed by an outside vendor, at the point
you know which module is a cause of failure (through
diagnosis described elsewhere in this manual), change the
corresponding modules, and do not diagnose or repair the
module.
Similarly, the switches and the semifixed VRs inside the
power-supply module must not be adjusted without a
special reason.
2. 200V AC power-down switch (SW101)
Function: While 200V AC voltage is applied, operation of
Function: While 200V AC voltage is applied, operation of
the PD circuit is turned on and off (ON when the
switch is set to 100V AC, and OFF when the
switch is set to 200V AC).
switch is set to 100V AC, and OFF when the
switch is set to 200V AC).
Setting:
For the PU model only, the switch is set to 100V,
and for other models, it is set to 200V.
and for other models, it is set to 200V.
Method of power supply ON in the large signal
system OFF state with RS-232C command
system OFF state with RS-232C command
1
Confirm that this unit is the standby state.
2
Transmit RS-232C command "DRF."
3
Turn the power supply ON by remote control unit, side
key or command "PON."
key or command "PON."
∗
When turn the power supply OFF once, return to
setting of large signal system ON.
When turn the power supply ON in the large signal
system OFF, transmit "DRF" command each time.
setting of large signal system ON.
When turn the power supply ON in the large signal
system OFF, transmit "DRF" command each time.
42
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
CHASSIS LAYOUT
Ë
PWB LOCATION
»
Rear View
DIGITAL VIDEO
Assy
Assy
BRIDGE B
Assy
Assy
ADR CONNECT D
Assy
Assy
CLAMP C
Assy
Assy
FRONT KEY
CONN
Assy
CONN
Assy
IR RECEIVE
(P) Assy
(P) Assy
CLAMP D
Assy
Assy
CLAMP B
Assy
Assy
X CONNECTOR (A)
Assy
Assy
V MID CLAMP
Assy
Assy
X CONNECTOR (B)
Assy
Assy
FRONT KEY
Assy
Assy
LED Assy
SP TERMINAL
Assy
Assy
X DRIVE Assy
AUDIO AMP
Assy
Assy
ADR CONNECT A
Assy
Assy
Y DRIVE
Assy
Assy
SCAN (A)
Assy
Assy
SENSOR
Assy
Assy
BRIDGE A
Assy
Assy
SCAN (B)
Assy
Assy
ADR CONNECT B
Assy
Assy
ADR RESONANCE
Assy
Assy
SUB ADDRESS A
Assy
Assy
SUB ADDRESS B
Assy
Assy
ADR RESONANCE
Assy
Assy
ADR CONNECT C
Assy
Assy
ADR CONNECT D
Assy
Assy
CLAMP A
Assy
Assy
ADR CONNECT C
Assy
Assy
MR INTERFACE
Assy
Assy
SW POWER SUPPLY
Module
Module
BRIDGE C
Assy
Assy
BRIDGE D
Assy
Assy
ADR CONNECT B
Assy
Assy
ADR CONNECT A
Assy
Assy
43
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
DESCRIPTION OF MAJOR IC FUNCTIONS
»
The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
»
List of IC
SN755860PJ, HD64F2328VF, PE1013B, M30624FGAFP, PD6358A, PST9246N, FS781BZB, STK795-460
Ë
SN755860PJ (SCAN (B) ASSY : IC6201 - IC6206)
SN755860PJ (SCAN (A) ASSY : IC6001 - IC6006)
• Scan IC
»
Pin Assignment (Top view)
1
10
20
30
40
90
50
60
70
HVO35
HVO36
HVO37
HVO38
HVO39
HVO40
HVO41
HVO42
HVO43
HVO44
HVO45
HVO46
HVO47
HVO48
HVO49
HVO50
HVO51
HVO52
HVO53
HVO54
HVO55
HVO56
HVO57
HVO58
HVO59
HVO60
HVO61
HVO62
HVO63
HVO64
HVO36
HVO37
HVO38
HVO39
HVO40
HVO41
HVO42
HVO43
HVO44
HVO45
HVO46
HVO47
HVO48
HVO49
HVO50
HVO51
HVO52
HVO53
HVO54
HVO55
HVO56
HVO57
HVO58
HVO59
HVO60
HVO61
HVO62
HVO63
HVO64
HVO30
HVO29
HVO28
HVO27
HVO26
HVO25
HVO24
HVO23
HVO22
HVO21
HVO20
HVO19
HVO18
HVO17
HVO16
HVO15
HVO14
HVO13
HVO12
HVO11
HVO10
HVO29
HVO28
HVO27
HVO26
HVO25
HVO24
HVO23
HVO22
HVO21
HVO20
HVO19
HVO18
HVO17
HVO16
HVO15
HVO14
HVO13
HVO12
HVO11
HVO10
HV
O34
HV
O33
NC
VH2
VH2
NC
GND
GND
GND
GND
NC
GND
GND
GND
NC
VH1
VH1
NC
HV
O32
HV
O31
VH2
VH2
NC
GND
GND
A/B
DB
GND
VLK
LE
VDD
OC1
OC2
DA
CLR
GND
GND
NC
VH1
VH1
HVO9
HVO8
HVO7
HVO6
HVO5
HVO4
HVO3
HVO2
HVO1
HVO8
HVO7
HVO6
HVO5
HVO4
HVO3
HVO2
HVO1
80
44
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
»
Block Diagram
»
Pin Function
DB
GND
DATA
VDD
GND
VH2
HVO33 - 64
DA
A/B
64 bit Shift Register
64 bit Latch
Selector
Selector
CLR
CLK
LE
OC1
OC2
DATA
GND
VH1
HVO1 - 32
Name
Pin No.
I/O
Num.
Function
CLK
39
I
1
Shift clock (start edge partial response)
DA
44
I/O
1
The serial data input of shifting register
DB
37
I/O
1
The serial data output of shifting register
LE
40
I
1
It output data done a latch of by "L" level
A/B
36
I
1
A shift directional control signal of shift register
CLR
45
I
1
It do data of shift register with "L" by "L" level
OC1
42
I
1
An output control terminal of HVO
OC2
43
I
1
An output control terminal of HVO
HVO
1-30, 51-82, 99, 100
O
64
High voltage drive output (HVO1 - HVO64)
VDD
41
−
1
Logic power supply
GND
34, 35, 38, 46, 47,
87-89, 91-94
87-89, 91-94
−
12
Standard potential. This is common to HVO1 - HVO64.
VH1
84, 85, 49, 50
−
4
The high potential circuit power supply which is common to HVO1 - HVO32
VH2
31, 32, 96, 97
−
4
The high potential circuit power supply which is common to HVO33 - HVO64
NC
33, 48, 95, 83, 86,
90, 98
90, 98
−
7
It is the insulation electrically
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