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ORDER NO.
CRT3933
PRS-D1200SPL/XU/UC
CLASS D MONO AMPLIFIER
PRS-D1200SPL /XU/UC
PRS-D1200SPL/XUEW5
For details, refer to "Important check points for good servicing".
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 2007
K-ZZA. MAY 2007 Printed in Japan
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SAFETY INFORMATION
CAUTION
A
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
B 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
C
D
E
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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
A
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed. B
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc. C
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
a Safe environment should be secured during servicing. D
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
E
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.
F
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CONTENTS
SAFETY INFORMATION..................................................................................................................................... 2
1. SERVICE PRECAUTIONS ............................................................................................................................... 5
A
1.1 SERVICE PRECAUTIONS ........................................................................................................................ 5
1.2 NOTES ON SOLDERING .......................................................................................................................... 5
2. SPECIFICATIONS ............................................................................................................................................ 6
2.1 SPECIFICATIONS ..................................................................................................................................... 6
2.2 PANEL FACILITIES.................................................................................................................................... 7
2.3 CONNECTION DIAGRAM ......................................................................................................................... 8
3. BASIC ITEMS FOR SERVICE.......................................................................................................................... 9
3.1 CHECK POINTS AFTER SERVICING....................................................................................................... 9
3.2 JIGS LIST ................................................................................................................................................ 10
4. BLOCK DIAGRAM...........................................................................................................................................11
5. DIAGNOSIS.................................................................................................................................................... 12
5.1 CONNECTOR FUNCTION DESCRIPTION ............................................................................................. 12
B 6. SERVICE MODE ............................................................................................................................................ 13
7. DISASSEMBLY .............................................................................................................................................. 14
8. EACH SETTING AND ADJUSTMENT ........................................................................................................... 18
8.1 ADJUSTMENT ......................................................................................................................................... 18
9. EXPLODED VIEWS AND PARTS LIST.......................................................................................................... 20
9.1 PACKING ................................................................................................................................................. 20
9.2 EXTERIOR............................................................................................................................................... 22
10. SCHEMATIC DIAGRAM ............................................................................................................................... 26
10.1 SCHEMATIC DIAGRAM(GUIDE PAGE)................................................................................................ 26
10.2 REMOTE CONTROL UNIT.................................................................................................................... 32
11. PCB CONNECTION DIAGRAM.................................................................................................................... 34
11.1 AMP UNIT .............................................................................................................................................. 34
C
11.2 REMOTE CONTROL UNIT .................................................................................................................... 38
12. ELECTRICAL PARTS LIST .......................................................................................................................... 39
D
E
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1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
A
- Service Precaution
1. 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.
2. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by
electrostatic induction.
3. The area where the temperature gets high as a completely assembled product is the heat sink. As a unit, on
the other hand, sub-heat sink and the periphery of the sub-heat sink are the areas where the temperature
gets high.
4. There is a danger for electrical shock in the periphery of an area where "CAUTION High Voltage" is indicated
on the printed circuit board due to a high voltage being generated during operation. Therefore, be careful
when working around such areas. B
5. The Holder Unit(CXC8183) cannot be used again when removing once. Please exchange it for new parts when you
remove the Holder Unit from the product. Reattachment of the Holder Unit having once peeled off may possibly leak
the light from an aperture generated by the weak adhesion of two-sided tape.
6. Since the secondary voltage is not discharged upon power-off of the product after the product operation check (some
residual voltage is left even after five minutes), forcibly discharge the voltage or conduct servicing after checking the
voltage with a tester.
7. When replacing the power FET or the output FET, parts connected in parallel need to be replaced at the same time.
C
1.2 NOTES ON SOLDERING
NOTES ON SOLDERING
For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron. D
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.
E
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2. SPECIFICATIONS
2.1 SPECIFICATIONS
A
B
C
D
E
F
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2.2 PANEL FACILITIES
A
B
C
D
E
F
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2.3 CONNECTION DIAGRAM
A
B
C
D
E
F
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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
A
To keep the product quality after servicing, please confirm following check points.
No. Procedures Item to be confirmed
1 Confirm whether the customer complain has The customer complain must not be
been solved. reappeared.
Audio and operations must be normal.
2 Check the output sound. Audio and operations must be normal.
3 Appearance check No scratches or dirt on its appearance after
receiving it for service.
B
See the table below for the items to be checked regarding video and audio:
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
C
D
E
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3.2 JIGS LIST
- Lubricants and Glues list
A Name Jig No. Remarks
Bond GEM1017 Applying to Chemical Capacitor etc. (*)
Bond GYL1006 Applying to Thermistor
(*) You can use GEM1017 even if the color is defferent from the original ones.
B
C
D
E
F
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4. BLOCK DIAGRAMthis chapter.
There is no information to be shown in
A
B
C
D
E
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5. DIAGNOSIS
5.1 CONNECTOR FUNCTION DESCRIPTION
A
B
C
D
E
F
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6. SERVICE MODE in this chapter.
There is no information to be shown
A
B
C
D
E
F
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7. DISASSEMBLY
You can see the Screws List on the page 24.
A
- Removing the Case (Fig.1)
1 Remove the six screws.
1 1 1
2 Remove the nine screws and then remove
the Case.
2 2
2 2
B
2 2
2 2
2
1 1 1
Case
C
Fig.1
Note)
When removing the case, remove it from the
positioning side. Removal from the opposite side
may deform the positioning pin. (Fig.2)
D
Positioning pin
Fig.2
E
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Note)
This product has high voltage circuit inside, and the voltage will be kept for a while by big capacitors.
So, before starting disassembly, make sure if the voltage of +VH and -VH become low enough after turning off the
A
power supply.
If you want to discharge the capacitors faster, connect the resistors of same value in parallel with the original discharge
resistors (R241 and R245).
- Removing the Amp Unit (Fig.3)
1 Remove the four screws.
1 1
3 3
2 Remove the ten screws. 3
2
B
2 2
3 Remove the six screws and then remove
2 2
the Amp Unit.
2
2
2 2
2
3 3
3
1 1
C
Amp Unit
Fig.3
Note)
Remove a screw for MODE SELECT only when
switching over the mode selection.You do not have
to remove this screw when removing the unit board. D
(Fig.4)
Screw for MODE SELECT
Fig.4
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- Bonding Position
A Make come near
C888 and C887
and them apply bond
from the top.
35 pts : GEM1017
3 pts : GYL1006
Hold here.
B
Hold here.
C
D 2 : Apply bond :
the bond must not flow
into screw hole.(C8,C9)
3 pts BOND LOCK 35 pts
Capacitor
Press the thermistor against
the transformer and apply an
adhesive as the end of the
thermistor touches the transformer.
Adhesive *Bond should be applied
E both of parts and PCB.
Press
*Be aware not to apply bond on contact
point of connector,
* TACK-FREE TIME 5 minutes seat area of screw.
* TACK-FREE TIME 10 minutes
Note)
When applying bond to two Film Capacitors (C887 and C888) , attach them and apply bond.
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A
B
C
A : Should be mounted closely.
A : The styling of lead of TH,
Apply bond to FET
must be straight.
(pay attention to a photograph.)
A
2 pts : GYL1006
D
1 mm E
Thermistor
Spring FET
When installing a Spring for holding of Thermistor, Place a Thermistor at the center of FET such that F
tighten a screw while pushing down the spring. the rightmost terminal of FET and the Thermistor
terminal are separated by 1 mm or more.
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8. EACH SETTING AND ADJUSTMENT
8.1 ADJUSTMENT
A
- Adjustment Point
AMP UNIT (SIDE A)
VR801
B
T201 VR201
CN108
Rg = 1 k
CN501
GND
RCA INPUT
Rg = 1 k
VR161
C T161
CN891 SP OUTPUT
+VH +VH -VH -VH
Q865 Q866 Q869 Q870
DC voltmeter
D
E
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- Speaker Output DC Offset Voltage Adjustment
No. Measurement condition Measurement point Adjustment point Adjustment Method
A
1 Power on SP OUT VR801 DC voltmeter : 0