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ORDER NO.
CRT5777
MVH-08UBG/XEUW5
DIGITAL MEDIA RECEIVER
MVH-08UBG /XEUW5
MVH-08UB/XEUW5
MVH-85UB/XEES
MVH-88UB/XFBR
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, 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 2015
K-ZZZ DEC. 2015 Printed in Japan
1 2 3 4
SAFETY INFORMATION
A CAUTION
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.
Where in a manufacturer's service documentation, for example in circuit diagrams or lists
of components, a symbol is used to indicate that a specific component shall be replaced only
by the component specified in that documentation for safety reasons, the following symbol shall
be used:
B
C
D
E
F
MVH-08UBG/XEUW5
2
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5 6 7 8
CONTENTS
SAFETY INFORMATION .....................................................................................................................................2
1. SERVICE PRECAUTIONS................................................................................................................................4
1.1 SERVICE PRECAUTIONS .........................................................................................................................4 A
1.2 NOTES ON DISASSEMBLY / ASSEMBLY .................................................................................................4
1.3 NOTES ON REPLACING PARTS ...............................................................................................................4
1.4 NOTES ON ADJUSTMENT ........................................................................................................................4
1.5 OTHERS.....................................................................................................................................................4
2. SPECIFICATIONS.............................................................................................................................................5
2.1 SPECIFICATIONS ......................................................................................................................................5
2.2 DISC/CONTENT FORMAT .........................................................................................................................5
3. BASIC ITEMS FOR SERVICE ..........................................................................................................................5
3.1 CHECK POINTS AFTER SERVICING .......................................................................................................5
4. BLOCK DIAGRAM ............................................................................................................................................6
4.1 BLOCK DIAGRAM......................................................................................................................................6
4.2 POWER SUPPLY SYSTEM FIGURE .........................................................................................................7 B
5. DIAGNOSIS ......................................................................................................................................................8
5.1 TROUBLESHOOTING................................................................................................................................8
5.2 ERROR CODE LIST...................................................................................................................................9
5.3 CONNECTOR FUNCTION DESCRIPTION .............................................................................................10
6. SERVICE MODE.............................................................................................................................................10
7. DISASSEMBLY ...............................................................................................................................................11
8. EACH SETTING AND ADJUSTMENT ............................................................................................................13
9. EXPLODED VIEWS AND PARTS LIST ..........................................................................................................14
9.1 PACKING ..................................................................................................................................................14
9.2 EXTERIOR ...............................................................................................................................................16
10. SCHEMATIC DIAGRAM................................................................................................................................18
C
10.1 MAIN BOARD PCB(MPEG/DECT).........................................................................................................18
10.2 MAIN BOARD PCB (TUN/ASP/AMP).....................................................................................................19
10.3 MAIN BOARD PCB (POWER/INTERFACE)...........................................................................................20
10.4 KEY PCB ................................................................................................................................................21
11. PCB CONNECTION DIAGRAM ....................................................................................................................22
11.1 MAIN BOARD PCB.................................................................................................................................22
11.2 KEY PCB ................................................................................................................................................24
12. ELECTRICAL PARTS LIST ...........................................................................................................................25
D
E
F
MVH-08UBG/XEUW5
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3
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1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
A
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.
1.2 NOTES ON DISASSEMBLY / ASSEMBLY
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.
B Please be sure to conduct line process to original status if you make assembling after repair.
1.3 NOTES ON REPLACING PARTS
Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
Please be careful of not to apply static charge onto integrated circuits, etc, when you conduct repair work.
Especially, please use soldering iron with its tip grounded.
Also, please use a pair of tweezers with static charge protection capability if there is the possibility of contacting to
C
device terminals, and avoid the use of metal-made tweezers.
1.4 NOTES ON ADJUSTMENT
There is not information to be shown in this chapter.
1.5 OTHERS
D
Notes on soldring
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.
E
F
MVH-08UBG/XEUW5
4
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2. SPECIFICATIONS
2.1 SPECIFICATIONS
For all items except the backup current, refer to the Owner's Manual. A
Backup current......................... 2.5 mA or less
2.2 DISC/CONTENT FORMAT
B
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
C
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.
If the customer complain occurs with the Display, audio and operations must be
specific media, use it for the operation check. normal.
2 FM/AM tuner Check FM/AM tuner action. Display, audio and operations must be
(Seek, Preset) normal.
Switch band to check both FM and AM.
D
3 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 audio:
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted E
F
MVH-08UBG/XEUW5
5 6 7 8
5
F
E
D
C
B
A
6
4.1 BLOCK DIAGRAM
4. BLOCK DIAGRAM
1
1
B KEY PCB FLASH A MAIN BOARD PCB
1MB
U1
I2C
TN LCD
LCD101 Radio Tuner
U3
L/R
L/ R LINE OUT
2
2
LCD Driver I2C
MVH-08UBG/XEUW5
IC401 MPEG L/R ASP LINE OUT
U10 U2
KEY AD
AD L/R
L/ R
EN100
AUX IN L/R AMPLIFIER
CON102 U4
3
3
USB USB
CON103 NOW
U403
4
4
4.2 POWER SUPPLY SYSTEM FIGURE
BATT
CONT/A.ANT
5
5
AMP
U4
4558
U6
5.78V
ASP
6
6
U11
U2
MVH-08UBG/XEUW5
3.3V
EMP89653.3V MPEG 100mA
U5 60mA U10
TUNER
U3
130mA
7
7
EUP3482A( U101)
EUP3482A(U101)
5V
USB 500mA
3300uF
LAMP 200mA
LCD DRIVER
IC401
8
8
7
E
D
C
A
F
B
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5. DIAGNOSIS
5.1 TROUBLESHOOTING
Unable to turn on the power
A
t a the volta
(Normal voltage)
he voltage not norma repl M NB DP B( mpl
u on n an error repl the
na D P B ( omplete t w thou nt panel)
ou annot hear
n FL
n
B
3 n
n
n gna w
ou anno n the gna repla M NB DP B
IN2 IN4
IN1 IN5
C
PRE-GND
the ta oe not w norm repla the M
the ta gr wor normall repla the ta gr
D
mplete t w thout Front panel
o not t error r the t
)
mplete t w thout Front panel
n
A5V
E
K5V
K5V
A5V
F
LAMP(5V) LAMP
MVH-08UBG/XEUW5
8
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5.2 ERROR CODE LIST
Common N/A USB
The connected USB device is not A
AMP ERROR
supported by this unit.
This unit fails to operate or the