Service Manuals, User Guides, Schematic Diagrams or docs for : Pioneer DEH DEH-2050MPG PIONEER DEH-2050MPA_2050MPG_2090MP
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ORDER NO.
CRT4045
DEH-2050MPA/XN/EC
CD RECEIVER
DEH-2050MPA /XN/EC
DEH-2050MPG/XN/EC
DEH-2090MP/XN/ID
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks
CX-3195 CRT3815 S10.5COMP2 CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
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-ZZU. OCT. 2007 Printed in Japan
1 2 3 4
SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
A 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.
- Safety Precautions for those who Service this Unit.
When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable
B results.
Caution:
1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replaced only with the same or equivalent type recommended by the manufacture.
C Discord used batteries according to the manufacture's instructions.
D
E
F
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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.
B
3 Make sure the soldering of repaired locations is properly performed.
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. C
In addition, be sure that there are no pinched wires, etc.
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.
D
a Safe environment should be secured during servicing.
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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1 2 3 4
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 DISC/CONTENT FORMAT ........................................................................................................................ 6
2.3 PANEL FACILITIES.................................................................................................................................... 7
2.4 PANEL FACILITIES.................................................................................................................................... 8
3. BASIC ITEMS FOR SERVICE.......................................................................................................................... 9
3.1 CHECK POINTS AFTER SERVICING....................................................................................................... 9
3.2 PCB LOCATIONS .................................................................................................................................... 10
3.3 JIGS LIST .................................................................................................................................................11
4. BLOCK DIAGRAM.......................................................................................................................................... 12
B 4.1 BLOCK DIAGRAM ................................................................................................................................... 12
5. DIAGNOSIS.................................................................................................................................................... 16
5.1 OPERATIONAL FLOW CHART ............................................................................................................... 16
5.2 ERROR CODE LIST ................................................................................................................................ 17
5.3 CONNECTOR FUNCTION DESCRIPTION ............................................................................................. 18
6. SERVICE MODE ............................................................................................................................................ 19
6.1 CD TEST MODE ...................................................................................................................................... 19
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT.................................................... 21
7. DISASSEMBLY .............................................................................................................................................. 23
8. EACH SETTING AND ADJUSTMENT ........................................................................................................... 26
8.1 PCL OUTPUT CONFIRMATION.............................................................................................................. 26
9. EXPLODED VIEWS AND PARTS LIST.......................................................................................................... 26
C 9.1 PACKING ................................................................................................................................................. 26
9.2 EXTERIOR............................................................................................................................................... 28
9.3 CD MECHANISM MODULE..................................................................................................................... 30
10. SCHEMATIC DIAGRAM............................................................................................................................... 32
10.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................... 32
10.2 KEYBOARD UNIT.................................................................................................................................. 38
10.3 CD MECHANISM MODULE(GUIDE PAGE) .......................................................................................... 40
10.4 WAVEFORMS ........................................................................................................................................ 46
11. PCB CONNECTION DIAGRAM.................................................................................................................... 48
11.1 TUNER AMP UNIT................................................................................................................................. 48
11.2 KEYBOARD UNIT .................................................................................................................................. 52
11.3 CD CORE UNIT(S10.5COMP2)............................................................................................................. 54
D
12. ELECTRICAL PARTS LIST .......................................................................................................................... 56
E
F
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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. Before disassembling the unit, be sure to turn off
the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside
the unit.
3. To protect the pickup unit from electrostatic discharge B
during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY".
4. After replacing the pickup unit, be sure to check the
grating.
5. Be careful in handling ICs. Some ICs such as MOS
type are so fragile that they can be damaged by
electrostatic induction.
C
1.2 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.
D
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.
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. E
GYP1008 0.3 in dia.
F
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2. SPECIFICATIONS
2.1 SPECIFICATIONS
A
Backup current
...................................... 2 mA or less
B
C
D
E
2.2 DISC/CONTENT FORMAT
F
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2.3 PANEL FACILITIES
A
B
C
D
E
F
DEH-2050MPA/XN/EC
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1 2 3 4
2.4 PANEL FACILITIES
- Connection Diagram
A
B
C
D
E
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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 been The customer complain must not be reappeared.
solved. Display, audio and operations must be normal.
If the customer complain occurs with the specific
media, use it for the operation check.
2 CD Play back a CD. No malfunction on display, audio and operation.
(Track search) Display, audio and operations must be normal.
3 FM/AM tuner Check FM/AM tuner action. Display, audio and operations must be normal.
(Seek, Preset) B
Switch band to check both FM and AM.
4 Check whether no disc is inside the product. The media used for the operating check must be
ejected.
5 Appearance check No scratches or dirt on its appearance after
receiving it for service.
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 C
Volume too high
Volume fluctuating
Sound interrupted
D
E
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3.2 PCB LOCATIONS
A
C
CD Core Unit(S10.5)
B
A
Tuner Amp Unit
C
B
Keyboard Unit
Unit Number : YWM5238(EC)
Unit Number : YWM5234(ID)
Unit Name : Tuner Amp Unit
D
Unit Number :
Unit Name : Keyboard Unit
Unit Number : CWX3514
Unit Name : CD Core Unit(S10.5COMP2)
E
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3.3 JIGS LIST
- Jigs List A
Name Jig No. Remarks
Test Disc TCD-782 Checking the grating
L.P.F. Checking the grating (Two pieces)
- Grease List
Name Grease No. Remarks B
Grease GEM1024 CD Mechanism Module
Grease GEM1045 CD Mechanism Module
Before shipping out the product, be sure to clean the
C
following portions by using the prescribed cleaning
tools:
Portions to be cleaned Cleaning tools
CD pickup lenses Cleaning liquid : GEM1004
Cleaning paper : GED-008
D
E
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4. BLOCK DIAGRAM
4.1 BLOCK DIAGRAM
A A TUNER AMP UNIT
SYS+B SWVDD
ANTENNA CN401
LDET
REFB
REFA
CE1
1
IFB
IFA
CE2
DO
CK
DI
SL-IN
SLOUT
AM_ANT
2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
IFOUTA
SLOUT
CE1
RFGND1
RFGND2
RFGND3
RFGND4
VDD
DO
IFOUTB
CE2
LDET
VCC
DI
DGND
REFINA
REFINB
ANT
CK
SLIN
IC2
EEPROM SL-IN
IFA
IFB
REFA
REFB
LDET
DI
B
CK
CE1
DO
VCO LFP CE2
SLOUT
ATT
ATT TANK
IC1
MIX / IF / PLL
ATT RF LFP
ELEC
CF SOU
FM/AM TUNER UNIT
TUNL
C 1
IN1_L
CDL
2
IN2_L
SYSPW
SYSTEM M
COMPUT
IC 601(2
REGULATOR IC PN5012
D C CD CORE UNIT(S10.5COMP2) SWD5V
5
1
2
47
36
POWEROFF
BSENS
6 3 15
PICKUP UNIT RF-AMP, CD DECODER, SWVDD IC 911 TOP41
(P10.5)(SERVICE) D MP3/WMA DECODER,
DIGITAL SERVO /
SYS+B
VDD
7
8
BA4918-V12 4
10
1
SWVDD
B.UP
VDD DATA PROCESSOR 9
LASER CN101 CN701 CN651
DIODE LD- 141
15 15 Q101 LD
MD 142 LOUT
5 5 PD 55 LOUT
REFO LOUT 13 3
VREF 8 133
8 REFOUT
SWVDD
AC,BD,F,E
HOLOGRAM
UNIT XTAL 50
85 DREG
Q601
FOM FOM X201
3 3 CD 16.93MHz
FOP FOP /XTAL 52
MONITOR
FOCUS ACT. 2 2 DRIVER 9
TOP
DIODE TRACKING ACT. 1 1 TOP REGC(M)
VDD 55
TOM
4 4
TOM IC301 PLL_VDD
LD+ BA5839FP IC201 Q102 57
14 14 TD,FD DVDD3
12
FOM
PE5547A VDD
9 7 VDD 94
VCC DVDD2
11 SD,MD
FOP 121
14 DVDD4
TOP 39
13 /PUEN
TOM
SPINDLE
E MOTOR M
16 16 /RESET 8 RESET 16
SOP 22 5 /RESET 8 CDRESET
LOEJ LOEJ
15
SOM 21 43
18
LOAD/ CARRIAGE LCOP CLCONT CLCONT
MOTOR M 17
CONT
9 41 BRST,BRXEN,BSRQ BRST,BRXEN,BSRQ,BDATA,BSCK
LCOM CONT VD
BDATA,BSCK
Q991 CD VD
VD VD
VD 2 14 B.UP
8 Q992
12EJ 1 15
7
8EJ 5
6
DSCSNS
9 126
HOME PDL3
S904 S905 S901
12EJ 8EJ HOME
VD
S903
DSCSNS 11
VDSENS
F
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