ORDER NO.
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 2002
DEH-P940MP/UC
CRT2847
MULTI-CD/DAB CONTROL DSP HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER
DEH-P940MP
UC
DEH-P9400MP
UC
DEH-P9450MP
ES
This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech.Module
Remarks
CX-3007
CRT2820
S9MP3
CD Mech. Module:Circuit Description,Mech. Description,Disassembly
For details, refer to "Important symbols for good services".
K-ZZS.FEB.2002.printed in Japan
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SAFETY INFORMATION
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 repai
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 o
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
[ 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:
2. Adjustments
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.
3. Cleaning
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.
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CONTENTS
SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. EXPLODED VIEWS AND PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1 PACKING(DEH-P940MP,P9400MP) . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2 PACKING(DEH-P9450MP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3 EXTERIOR(1)(DEH-P940MP,P9400MP) . . . . . . . . . . . . . . . . . . . . . 10
2.4 EXTERIOR(2)(DEH-P940MP,P9400MP) . . . . . . . . . . . . . . . . . . . . . 12
2.5 EXTERIOR(1)(DEH-P9450MP) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6 EXTERIOR(2)(DEH-P9450MP) . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7 CD MECHANISM MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 20
3.1 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 OVERALL CONNECTION DIAGRAM(DEH-P940MP,P9400MP)(GUIDE PAGE) . 22
3.3 OVERALL CONNECTION DIAGRAM(DEH-P9450MP)(GUIDE PAGE) . . . . . . 28
3.4 DSP UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5 KEYBOARD UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.6 CD MECHANISM MODULE(GUIDE PAGE) . . . . . . . . . . . . . . . . . . . . 38
4. PCB CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.1 TUNER AMP UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.2 DSP UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.3 KEYBOARD UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4.4 CD CORE UNIT(S9MP3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
4.5 EQ PCB, SWITCH PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5. ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6. ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.1 CD ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT . . . . . . 77
6.3 TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.4 DISPLAY TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.1 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.1.1 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.1.2 CONNECTOR FUNCTION DESCRIPTION . . . . . . . . . . . . . . . . . . . 86
7.2 IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
7.3 OPERATIONAL FLOW CHART . . . . . . . . . . . . . . . . . . . . . . . . . 107
7.4 CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8. OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
- CD Player Service Precautions
2.
1.
For pickup unit(CXX1550) handling, please refer
to"Disassembly"(see page 82)
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a jumper-solder).
3. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
4. Please checking the grating after changing the ser-
vice pickup unit(see page 77).
Before shipping out the repaired product, confirm the
position of the DSP MODE switch; the switch should
be set to the side that the customer previously select-
ed.
If the switch is set to the STD side on the product
where the NW side was selected, the speakers con-
nected may be damaged.
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1. SPECIFICATIONS
S
pecifications(DEH-P940MP/UC)
General
Power
source
..............
14.4
V
DC
(10.8
15.1
V
allowable)
Grounding
system
..........................................
Negative
type
Max.
current
consumption
........................................
10.0
A
Backup
current
..........................................
Less
than
6
mA
Dimensions
(DIN)
(chassis)
......
178
(W)
×
50
(H)
×
157
(D)
mm
[7
(W)
×
2(H)
×
6-1/8
(D)
in.]
(nose)
............
188
(W)
×
58
(H)
×
24
(D)
mm
[7-3/8
(W)
×
2-1/4
(H)
×
1(D)
in.]
(D)
(chassis)
......
178
(W)
×
50
(H)
×
162
(D)
mm
[7
(W)
×
2(H)
×
6-3/8
(D)
in.]
(nose)
............
170
(W)
×
45
(H)
×
19
(D)
mm
[6-3/4
(W)
×
1-3/4
(H)
×
3/4
(D)
in.]
Weight
........................................................
1.7
kg
(3.7
lbs.)
Audio/DSP
Continuous
power
output
is
22
W
per
channel
min.
into
4
ohms,
both
channels
driven
50
to
15,000
Hz
with
no
more
than
5%
THD.
Maximum
power
output
......................................
50
W
×
4
Load
impedance
............................
4
(4
8
allowable)
Preout
maximum
output
level/
output
impedance
....................................
6.5
V/100
Loudness
contour
........
+10
dB
(100
Hz),
+6.5
dB
(10
kHz)
(volume:
30
dB)
Equalizer
(13-Band
Graphic
Equalizer)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
range
................................
±12
dB
(2
dB)
Auto
Equalizer
(Just
for
standard
mode)
(Front
&
Rear
&
Subwoofer
13-Band
Graphic)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
range
......................
+6
--
12
dB
(2
dB)
Network
(Standard
mode)
HPF
(Front/Rear)
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
12
dB/oct.
Subwoofer
output
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
18
dB/oct.
Gain
..............................
24
dB
--
+6
dB
(1
dB)
Phase
........................................
Normal/Reverse
Network
(3-way
network
mode)
HIGH
HPF
Frequency
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Slope
............................................
6/
12
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
MID
HPF/LPF
Frequency
(LPF)
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Frequency
(HPF)
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
(LPF)
....................
0(Pass)/
6/
12
dB/oct.
Slope
(HPF)
............
0(Pass)/
6/
12/
18
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
LOW
LPF
Frequency
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
....................................
6/
12/
18
dB/oct.
Gain
......................
24
dB
--
+6
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
CD
player
System
....................................
Compact
disc
audio
system
Usable
discs
..................................................
Compact
disc
Signal
format
......................
Sampling
frequency:
44.1
kHz
Number
of
quantization
bits:
16;
linea
r
Frequency
characteristics
................
5
20,000
Hz
(±
1dB)
Signal-to-noise
ratio
............
94
dB
(1
kHz)
(IHF-A
network)
Dynamic
range
..............................................
92
dB
(1
kHz)
Number
of
channels
............................................
2(stereo)
MP3
decoding
format
........
MPEG-1
and
2
AUDIO
LAYER-3
WMA
decoding
format
....................................
Ver.
7
and
8
FM
tuner
Frequency
range
......................................
87.9
107.9
MHz
Usable
sensitivity
........................................................
9dBf
(0.8
µV/75
,mono,
S/N:
30
dB)
50
dB
quieting
sensitivity
......
15
dBf
(1.5
µV/75
,mono)
Signal-to-noise
ratio
........................
70
dB
(IHF-A
network)
Distortion
............................
0.3%
(at
65
dBf,
1
kHz,
stereo)
Frequency
response
......................
30
15,000
Hz
(±
3dB)
Stereo
separation
..........................
40
dB
(at
65
dBf,
1
kHz)
Selectivity
......................................................
70
dB
(2ACA)
Three-signal
intermodulation
(desired
signal
level)
........................................
30
dBf
(two
undesired
signal
level:
100
dBf)
AM
tuner
Frequency
range
.........................
530
1,710
kHz
(10
kHz)
Usable
sensitivity
..................................
18
µV
(S/N:
20
dB)
Selectivity
..................................................
50
dB
(±
10
kHz
)
Note:
·
Specifications
and
design
are
subject
to
modifica-
tion
without
notice
for
the
sake
of
improvements.
S
pecifications(DEH-P9400MP/UC)
General
Power
source
..............
14.4
V
DC
(10.8
15.1
V
allowable)
Grounding
system
..........................................
Negative
type
Max.
current
consumption
........................................
10.0
A
Backup
current
............................................
Less
than
6
mA
Dimensions
(DIN)
(chassis)
......
178
(W)
×
50
(H)
×
157
(D)
mm
[7
(W)
×
2(H)
×
6-1/8
(D)
in.]
(nose)
............
188
(W)
×
58
(H)
×
24
(D)
mm
[7-3/8
(W)
×
2-1/4
(H)
×
1(D)
in.]
(D)
(chassis)
......
178
(W)
×
50
(H)
×
162
(D)
mm
[7
(W)
×
2(H)
×
6-3/8
(D)
in.]
(nose)
............
170
(W)
×
45
(H)
×
19
(D)
mm
[6-3/4
(W)
×
1-3/4
(H)
×
3/4
(D)
in.]
Weight
........................................................
1.7
kg
(3.7
lbs.)
Audio/DSP
Continuous
power
output
is
22
W
per
channel
min.
into
4
ohms,
both
channels
driven
50
to
15,000
Hz
with
no
more
than
5%
THD.
Maximum
power
output
......................................
50
W
×
4
Load
impedance
............................
4
(4
8
allowable)
Preout
maximum
output
level/
output
impedance
....................................
4.0
V/100
Loudness
contour
........
+10
dB
(100
Hz),
+6.5
dB
(10
kHz)
(volume:
30
dB)
Equalizer
(13-Band
Graphic
Equalizer)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
range
................................
±12
dB
(2
dB)
Auto
Equalizer
(Just
for
standard
mode)
(Front
&
Rear
&
Subwoofer
13-Band
Graphic)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
range
......................
+6
--
12
dB
(2
dB)
Network
(Standard
mode)
HPF
(Front/Rear)
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
12
dB/oct.
Subwoofer
output
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
18
dB/oct.
Gain
..............................
24
dB
--
+6
dB
(1
dB)
Phase
........................................
Normal/Reverse
Network
(3-way
network
mode)
HIGH
HPF
Frequency
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Slope
............................................
6/
12
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
MID
HPF/LPF
Frequency
(LPF)
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Frequency
(HPF)
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
(LPF)
....................
0(Pass)/
6/
12
dB/oct.
Slope
(HPF)
............
0(Pass)/
6/
12/
18
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
LOW
LPF
Frequency
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
....................................
6/
12/
18
dB/oct.
Gain
......................
24
dB
--
+6
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
CD
player
System
....................................
Compact
disc
audio
system
Usable
discs
..................................................
Compact
disc
Signal
format
......................
Sampling
frequency:
44.1
kHz
Number
of
quantization
bits:
16;
linea
r
Frequency
characteristics
................
5
20,000
Hz
(±
1dB)
Signal-to-noise
ratio
............
94
dB
(1
kHz)
(IHF-A
network)
Dynamic
range
..............................................
92
dB
(1
kHz)
Number
of
channels
............................................
2(stereo)
MP3
decoding
format
........
MPEG-1
and
2
AUDIO
LAYER-3
WMA
decoding
format
....................................
Ver.
7
and
8
FM
tuner
Frequency
range
......................................
87.9
107.9
MHz
Usable
sensitivity
........................................................
9dBf
(0.8
µV/75
,mono,
S/N:
30
dB)
50
dB
quieting
sensitivity
......
15
dBf
(1.5
µV/75
,mono)
Signal-to-noise
ratio
........................
70
dB
(IHF-A
network)
Distortion
............................
0.3%
(at
65
dBf,
1
kHz,
stereo)
Frequency
response
......................
30
15,000
Hz
(±
3dB)
Stereo
separation
..........................
40
dB
(at
65
dBf,
1
kHz)
Selectivity
......................................................
70
dB
(2ACA)
Three-signal
intermodulation
(desired
signal
level)
........................................
30
dBf
(two
undesired
signal
level:
100
dBf)
AM
tuner
Frequency
range
.........................
530
1,710
kHz
(10
kHz)
Usable
sensitivity
..................................
18
µV
(S/N:
20
dB)
Selectivity
..................................................
50
dB
(±
10
kHz
)
Note:
·
Specifications
and
design
are
subject
to
modifica-
tion
without
notice
for
the
sake
of
improvements.
DEH-P940MP/UC
A
B
C
D
56
7
8
56
7
8
5
S
pecifications(DEH-P9450MP/ES)
General
Power
source
..............
14.4
V
DC
(10.8
15.1
V
allowable)
Grounding
system
..........................................
Negative
type
Max.
current
consumption
........................................
10.0
A
Backup
current
..........................................
Less
than
6
mA
Dimensions
(DIN)
(chassis)
......
178
(W)
×
50
(H)
×
157
(D)
mm
(nose)
............
188
(W)
×
58
(H)
×
24
(D)
mm
(D)
(chassis)
......
178
(W)
×
50
(H)
×
162
(D)
mm
(nose)
............
170
(W)
×
45
(H)
×
19
(D)
mm
Weight
......................................................................
1.7
kg
Audio/DSP
Continuous
power
output
is
22
W
per
channel
min.
into
4
ohms,
both
channels
driven
50
to
15,000
Hz
with
no
more
than
5%
THD.
Maximum
power
output
......................................
50
W
×
4
Load
impedance
............................
4
(4
8
allowable)
Preout
maximum
output
level/
output
impedance
....................................
6.5
V/100
Loudness
contour
........
+10
dB
(100
Hz),
+6.5
dB
(10
kHz)
(volume:
30
dB)
Equalizer
(13-Band
Graphic
Equalizer)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
Range
................................
±12
dB
(2
dB)
Auto
Equalizer
(Just
for
standard
mode)
(Front
&
Rear
&
Subwoofer
13-Band
Graphic)
Frequency
..................
50/80/125/200/315/500/800
Hz
1.25/2/3.15/5/8/12.5
kHz
Equalization
Range
......................
+6
--
12
dB
(2
dB)
Network
(Standard
mode)
HPF
(Front/Rear)
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
12
dB/oct.
Subwoofer
output
Frequency
..........................
50/63/80/100/125
Hz
Slope
................................................
18
dB/oct.
Gain
..............................
24
dB
--
+6
dB
(1
dB)
Phase
..........................................
Normal/Reverse
Network
(3-way
network
mode)
HIGH
HPF
Frequency
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Slope
............................................
6/
12
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
MID
HPF/LPF
Frequency
(LPF)
..............1.6/2/2.5/3.15/4/5/6.3/8/10/12.5/16
kHz
Frequency
(HPF)
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
(LPF)
....................
0(Pass)/
6/
12
dB/oct.
Slope
(HPF)
............
0(Pass)/
6/
12/
18
dB/oct.
Gain
........................
24
dB
--
0
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
LOW
LPF
Frequency
................31.5/40/50/63/80/100/125/160/200
Hz
Slope
....................................
6/
12/
18
dB/oct.
Gain
......................
24
dB
--
+6
dB/Mute
(1
dB)
Phase
..........................................
Normal/Reverse
CD
player
System
....................................
Compact
disc
audio
system
Usable
discs
..................................................
Compact
disc
Signal
format
......................
Sampling
frequency:
44.1
kHz
Number
of
quantization
bits:
16;
linea
r
Frequency
characteristics
................
5
20,000
Hz
(±
1dB)
Signal-to-noise
ratio
............
94
dB
(1
kHz)
(IEC-A
network)
Dynamic
range
..............................................
92
dB
(1
kHz)
Number
of
channels
............................................
2(stereo)
MP3
decoding
format
........
MPEG-1
and
2
AUDIO
LAYER-3
WMA
decoding
format
....................................
Ver.
7
and
8
FM
tuner
Frequency
range
........................................
87.5
108
MHz
Usable
sensitivity
........................................................
9dBf
(0.8
µV/75
,mono,
S/N:
30
dB)
50
dB
quieting
sensitivity
..........................................
15
dBf
(1.5
µV/75
,mono)
Signal-to-noise
ratio
........................
70
dB
(IEC-A
network)
Distortion
............................
0.3%
(at
65
dBf,
1
kHz,
stereo)
Frequency
response
......................
30
15,000
Hz
(±
3dB)
Stereo
separation
..........................
40
dB
(at
65
dBf,
1
kHz)
AM
tuner
Frequency
range
..........................
531
1,602
kHz
(9
kHz)
530
1,640
kHz
(10
kHz)
Usable
sensitivity
..................................
18
µV
(S/N:
20
dB)
Selectivity
....................................................
50
dB
(±
9kHz)
50
dB
(±
10
kHz
)
Infrared
remote
control
Wave
length
..............................................
940
nm
±50
nm
Output
........
typ;
12
mw/sr
per
Infrared
LED
(2
LEDs
used)
Note:
·
Specifications
and
design
are
subject
to
modifica-
tion
without
notice
for
the
sake
of
improvements.