PZ-50HV2E (serv.man4). Safety information — Sharp TV Service Manual (repair manual)

Model
PZ-50HV2E (serv.man4)
Pages
3 Few pages! See other manuals at the bottom of the first or last page.
Size
19.59 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Safety information
File
pz-50hv2e-sm4.pdf
Date

View Sharp PZ-50HV2E (serv.man4) Service Manual online

5
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
SAFETY INFORMATION
This service manual is intended for qualified service technicians ; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause
cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 – Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols              (fast operating fuse) and/or               (slow operating fuse) on PWB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible               (fusible de type rapide) et/ou               (fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.
SAFETY PRECAUTIONS
NOTICE :Comply with all cautions and safety related notes
located on or inside the cabinet and on the chassis.
The following precautions should be observed :
1. When service is required, even though the PDP UNIT an
isolation transformer should be inserted between the power
line and the set in safety before any service is performed.
2. When replacing a chassis in the set, all the protective
devices must be put back in place, such as barriers,
nonmetallic knobs, adjustment and compartment
covershields, isolation resistor-capacitor, etc.
3. When service is required, observe the original lead dress.
Extra precaution should be taken to assure correct  lead
dress in the high voltage circuitry area.
4. Always use the manufacture's replacement components.
Especially critical components as indicated on the circuit
diagram should not be replaced by other manufacture's.
Furthermore where a short circuit has occurred, replace
those components that indicate evidence of overheating.
5. Before returning a serviced set to the customer, the service
technician must thoroughly test the unit to be certain that it
is completely safe to operate without danger of electrical
shock, and be sure that no protective device built into the
set by the manufacture has become defective, or
inadvertently defeated during servicing. Therefore, the
following checks should be performed for the continued
protection of the customer and service technician.
6. Perform the following precautions against unwanted
radiation and rise in internal temperature.
• Always return the internal wiring to the original styling.
• Attach parts (Gascket, Ferrite Core, Ground, Rear Cover,
Shield Case etc.) surely after disassembly.
7. Perform the following precautions for the PDP panel.
• When the front case is removed, make sure nothing hits
the panel face, panel corner, and panel edge (so that the
glass does not break).
• Make sure that the panel vent does not break. (Check
that the cover is attached.)
• Handle the FPC connected to the panel carefully.
Twisting or pulling the FPC when connecting it to the
connector will cause it to peel off from the panel.
8. Pay attention to the following.
• Be sure to wire the fan. If the fan does not work, the
temperature will rise and cause the protection circuit to
operate.
• When the front case is removed, infrared ray is radiated
and may disturb reception of the remote control unit.
• Pay extreme caution when the front case and rear panel
are removed because this may cause a high risk of
disturbance to TVs and radios in the surrounding.
6
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
Leakage Current Cold Check
With the AC plug removed from an AC power source, place
a jumper across the two plug prongs. Turn the AC power
switch on. Using an insulation tester (DC 500V), connect one
lead to the jumpered AC plug and touch the other lead to each
exposed metal part (input/output terminals, screwheads,
metal overlays, control shafts, etc.), particularly any exposed
metal part having a return path to the chassis. Exposed metal
parts having a return path to the chassis should have a
minimum resistor reading of 0.3M
 and a maximum resistor
reading of 5M
. Any resistor value below or above this range
indicates an abnormality which requires corrective action.
Exposed metal parts not having a return path to the chassis
will indicate an open circuit.
Leakage Current Hot Check
Plug the AC line cord directly into an AC power source (do not
use an isolation transformer for this check).
Turn the AC power switch on.
Using a "Leakage Current Tester (Simpson Model 229
equivalent)", measure for current from all exposed metal
parts of the cabinet (input/output terminals, screwheads,
metal overlays, control shaft, etc.), particularly any exposed
metal part having a return path to the chassis, to a known
earth ground (water pipe, conduit, etc.).  Any current measured
must not exceed 0.5mA.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE SET TO THE CUSTOMER.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in SHARP set have
special safety related characteristics. These are often not
evident from visual inspection nor the protection afforded by
them necessarily can be obtained by using replacement
components rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are identified by
marking with a 
å
 on the schematics and on the parts list in
this Service Manual.
The use of a substitute replacement component which dose
not have the same safety characteristics as the SHARP
recommended replacement one, shown in the parts list in this
Service Manual, may create shock, fire or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current SHARP Service
Manual. A subscription to, or additional copies of, SHARP
Service Manual may be obtained at a nominal charge from
SHARP.
Device
under
test
Leakage
current
tester
Reading should
not be above
0.5 mA
Also test with
plug reversed
(Using AC adapter
plug as required)
Test all
exposed metal
surfaces
Earth ground
7
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT
Ë
Charged Section
1. AC Power Cord
2. AC Inlet with Filter
3. Power Switch (S1)
4. Fuse (In the SW POWER SUPPLY Module)
5. STB Transformer and Converter Transformer
    (In the SW POWER SUPPLY Module)
6. Other primary side of the SW POWER SUPPLY Module
Ë
High Voltage Generating Point
The places where voltage is 100V or more except for the
charged places described above. If the places are touched,
there is a risk of electric shock.
1. SW POWER SUPPLY Module .............................. (225V)
2. X DRIVE Assy ....................................... (–300V to 225V)
3. Y DRIVE Assy ....................................................... (355V)
4. SCAN (A) Assy ...................................................... (355V)
5. SCAN (B) Assy ...................................................... (355V)
6. X CONNECTOR (A) Assy ..................... (–300V to 225V)
7. X CONNECTOR (B) Assy ..................... (–300V to 225V)
AC Inlet with Filter
Power Cord
Power Switch
(S1)
Fig.1 Charged Section and High Voltage Generating Point (Rear View)
: Part is the High Voltage Generating Points
   other than the Charged Section.
: Part is Charged Section.
X DRIVE
Assy
X CONNECTOR (B)
Assy
Y DRIVE
Assy
SCAN (A)
Assy
SCAN (B)
Assy
Remove the IF Earth Metal beforehand when inclines 
the power supply unit as the right figure.
X CONNECTOR (A)
Assy
SW POWER SUPPLY
Module
Top
Front
7
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT
Ë
Charged Section
1. AC Power Cord
2. AC Inlet with Filter
3. Power Switch (S1)
4. Fuse (In the SW POWER SUPPLY Module)
5. STB Transformer and Converter Transformer
    (In the SW POWER SUPPLY Module)
6. Other primary side of the SW POWER SUPPLY Module
Ë
High Voltage Generating Point
The places where voltage is 100V or more except for the
charged places described above. If the places are touched,
there is a risk of electric shock.
1. SW POWER SUPPLY Module .............................. (225V)
2. X DRIVE Assy ....................................... (–300V to 225V)
3. Y DRIVE Assy ....................................................... (355V)
4. SCAN (A) Assy ...................................................... (355V)
5. SCAN (B) Assy ...................................................... (355V)
6. X CONNECTOR (A) Assy ..................... (–300V to 225V)
7. X CONNECTOR (B) Assy ..................... (–300V to 225V)
AC Inlet with Filter
Power Cord
Power Switch
(S1)
Fig.1 Charged Section and High Voltage Generating Point (Rear View)
: Part is the High Voltage Generating Points
   other than the Charged Section.
: Part is Charged Section.
X DRIVE
Assy
X CONNECTOR (B)
Assy
Y DRIVE
Assy
SCAN (A)
Assy
SCAN (B)
Assy
Remove the IF Earth Metal beforehand when inclines 
the power supply unit as the right figure.
X CONNECTOR (A)
Assy
SW POWER SUPPLY
Module
Top
Front
7
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT
Ë
Charged Section
1. AC Power Cord
2. AC Inlet with Filter
3. Power Switch (S1)
4. Fuse (In the SW POWER SUPPLY Module)
5. STB Transformer and Converter Transformer
    (In the SW POWER SUPPLY Module)
6. Other primary side of the SW POWER SUPPLY Module
Ë
High Voltage Generating Point
The places where voltage is 100V or more except for the
charged places described above. If the places are touched,
there is a risk of electric shock.
1. SW POWER SUPPLY Module .............................. (225V)
2. X DRIVE Assy ....................................... (–300V to 225V)
3. Y DRIVE Assy ....................................................... (355V)
4. SCAN (A) Assy ...................................................... (355V)
5. SCAN (B) Assy ...................................................... (355V)
6. X CONNECTOR (A) Assy ..................... (–300V to 225V)
7. X CONNECTOR (B) Assy ..................... (–300V to 225V)
AC Inlet with Filter
Power Cord
Power Switch
(S1)
Fig.1 Charged Section and High Voltage Generating Point (Rear View)
: Part is the High Voltage Generating Points
   other than the Charged Section.
: Part is Charged Section.
X DRIVE
Assy
X CONNECTOR (B)
Assy
Y DRIVE
Assy
SCAN (A)
Assy
SCAN (B)
Assy
Remove the IF Earth Metal beforehand when inclines 
the power supply unit as the right figure.
X CONNECTOR (A)
Assy
SW POWER SUPPLY
Module
Top
Front

Download Sharp PZ-50HV2E (serv.man4) Service Manual (Repair Manual)

Here you can view online or download Sharp PZ-50HV2E (serv.man4) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp PZ-50HV2E (serv.man4) LCD. Information contained in Sharp PZ-50HV2E (serv.man4) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).