PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2003
HDTV PROJECTION MONITOR
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This service manual should be used together with the following manual(s).
· Parts of the exploded views are all mentioned in this manual.
· The electrical parts are mentioned by contrast table in this manual.
(Refer to "3. Contrast of miscellaneous parts.")
SAFETY INFORMATION, SPECIFICATIONS, EXPLODED VIEWS AND
PARTS LIST , BLOCK DIAGRAM AND SCHEMATIC DIAGRAM,
PCB CONNECTION DIAGRAM, PCB PARTS LIST
ADJUSTMENT, DIAGNOSIS, IC, EXPLANATION, PANEL FACILITIES etc.
For details, refer to "Important symbols for good services".
T-ZZY OCT. 2003 printed in Japan
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
(FOR CANADIAN MODEL ONLY)
(fast operating fuse) and/or
(slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
(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.
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.
1. SAFETY PRECAUTIONS
NOTICE : Comply with all cautions and safety related notes
located on or inside the cabinet and on the chassis or
The following precautions should be observed :
1. Do not install, remove, or handle the picture tube in any manner
unless shatterproof goggles are worn.
People not so equipped should be kept away while picture tubes
Keep picture tube away from the while handling.
2. When service is required, even though the HDTV PROJECTION
MONITOR an isolation transformer should be inserted between
power line and the set in safety before any service is performed.
3. 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-
4. 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.
5. 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.
6. 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
Therefore, the following checks should be performed for the
continued protection of the customer and service technician.
Leakage Current Cold Check
With the AC plug removed from the 120V AC 60Hz 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 should have a minimum resistor reading of
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.
not be above
Also test with
(Using AC adapter
plug as required)
AC Leakage Test
Leakage Current Hot Check
Plug the AC line cord directly into a 120V AC 60Hz outlet (do not
use an isolation transformer for this check). Turn the AC power
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.
This set is provided with a X-ray protection for clearly indicating
that voltage has increased in excess of a predetermined value.
Comply with all notes described in this Service Manual regarding
this hold down circuit when servicing, so that this X-ray protection
may correctly be operated.
In the status of the black picture (video muting is being applied)
when no signal is input, high voltage of this set during operation is
less than 30.5kV. In case any component having some relation to
the high voltage is replaced, confirm that the high voltage is lower
than 30.5kV in the status of the black picture when no signal is
To measure H. V. use a high impedance H. V. meter.
Connect () to earth and (+) to the FBT anode cable connector.
(Refer to section "7.1.2 DISASSEMBLY".)
TUBE : The primary source of X-radiation in this set is the picture
For continued X-radiation protection, the replacement tube must be
the same type as the original, PIONEER approved type.
The picture tube (CRT Service Assy R, G, B) used in this set holds
complete guarantee against X-ray radiation when the X-ray is
sealed (next page ). Accordingly, when the current in flowing to the
picture tube (CRT Service Assy R, G, B), be sure to perform it by
putting the tube into X-ray sealed applied state. Avoid absolutely to
flow the current to the picture tube (CRT Service Assy R, G, B)
itself. Moreover, when the voltage of the high voltage circuit
becomes abnormally a little higher, the picture tube radiates X-rays.
Accordingly, when servicing the high voltage circuit be sure to
replace as an assy with the POWER SUPPLY Assy in the manner
in which has been adjusted to perform normal operation.
Many electrical and mechanical parts in PIONEER 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 > on the schematics and on the parts list in this
The use of a substitute replacement component which dose not
have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in this
Service Manual, may create shock, fire, X-radiation, or other
Product Safety is continuously under review and new instructions
are issued from time to time. For the latest information, always
consult the current PIONEER Service Manual. A subscription to, or
additional copies of, PIONEER Service Manual may be obtained at
a nominal charge from PIONEER.
1.2 PRODUCT SAFETY NOTICE
3. CHARGED SECTION, HIGH VOLTAGE GENERATING POINT AND X-RAY
The circuit in which the commercial AC power is used as it is
without passing through the power supply transformer.
If the charged section is touched, there is a risk of electric
shock. In addition, the measuring equipment can be
damaged if it is connected to the GND of the charged section
and the GND of the non-charged section while connecting
the set directly to the commercial AC power supply, In this
case, be sure to connect the set via an insulated transformer
and supply the current.
1. AC Power Cord
2. The primary side of the POWER SUPPLY Assy
3. POWER SW Assy
High Voltage generating point
(Power supply primary side)
The place where voltage of over 100V is generated.
1. Charged section
2. DEFLECTION Service Assy
(including FBT)......................(30.5kV, 1.2kV, 210V, 120V)
3. POWER SUPPLY Assy...........................................(120V)
4. R CRT DRIVE Assy....................................(10.5kV, 210V)
5. G CRT DRIVE Assy....................................(10.5kV, 210V)
6. B CRT DRIVE Assy....................................(10.5kV, 210V)
7. CRT Service Assy R.............................................(30.5kV)
8. CRT Service Assy G.............................................(30.5kV)
9. CRT Service Assy B.............................................(30.5kV)
10. Focus VR (VR1)...................................................(10.5kV)
11. Deflection Yokes (L1, L2 and L3)
..............Approx. (1100V at peak)
12. HV Distributor(Anode) .........................................(30.5kV)
· Regarding the parts which are relative to radiation of X-rays
(There is the danger to radiate X-ray from the individual
CRT Service Assy R, G, B), there are notifications of
caution in the individual schematic diagrams. Be sure to
read them for safety's sake.
· The component parts for X-ray protection are as follows:
When the current flows to the CRT Service Assy R, G, B,
be sure to perform it with these parts being attached.
Protection from the X-ray radiation is maintained in the
state in which these parts have been installed to the CRT
Service Assy R, G, B. Accordingly, never supply current
only to the CRT Service Assy R, G, B.
Moreover, the anode voltage of the CRT Service Assy R, G,
B should always be kept not higher than the predetermined
value (in the minimum brightness and picture state when
non signal input is less than 30.5kV). Be sure to drive the
CRT Service Assy R, G, B by using a completely functional
Deflection Service Assy (including FBT) which have been
adjusted completely in the combined state. (When the
voltage abnormally becomes high, the X-ray protection
circuit will operate.)
1. CRT Service Assy R, G, B (Do not dismantle CRT
assemblies under any circumstances).
2. Each Lens Assy
: Part is charged section.
: Part is the high voltage generating points other than the
AC Power Cord
Fig.1 Carged Section and High Voltage Generation Point
Each Lens Assy
CRT Service Assy R, G, B
Fig.2 Component parts for X-ray protection
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.