Pioneer DEH-P490IB - Premier Radio / CD User manual

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 2006
DEH-P490IB/XN/UC
CRT3846
CD RECEIVER
DEH-P490IB
/XN/UC
DEH-P4900IB
/XN/UC
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".
K-ZZU. DEC. 2006 Printed in Japan

DEH-P490IB/XN/UC
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CONTENTS
SAFETY INFORMATION..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8
2.1 PACKING ................................................................................................................................................... 8
2.2 EXTERIOR............................................................................................................................................... 10
2.3 CD MECHANISM MODULE..................................................................................................................... 14
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..........................................................................................16
3.1 BLOCK DIAGRAM ................................................................................................................................... 16
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE).............................................................................. 18
3.3 KEYBOARD UNIT.................................................................................................................................... 24
3.4 CD MECHANISM MODULE(GUIDE PAGE) ............................................................................................ 26
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 34
4.1 TUNER AMP UNIT................................................................................................................................... 34
4.2 KEYBOARD UNIT.................................................................................................................................... 38
4.3 PANEL UNIT ............................................................................................................................................ 39
4.4 CD CORE UNIT(S10.5COMP2)............................................................................................................... 40
5. ELECTRICAL PARTS LIST ............................................................................................................................ 42
6. ADJUSTMENT ............................................................................................................................................... 50
6.1 CD ADJUSTMENT................................................................................................................................... 50
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT .................................................... 52
6.3 ERROR MODE ........................................................................................................................................ 54
6.4 IPOD TEST MODE .................................................................................................................................. 55
6.5 SYSTEM MICROCOMPUTER TEST PROGRAM ................................................................................... 56
7. GENERAL INFORMATION............................................................................................................................. 57
7.1 DIAGNOSIS ............................................................................................................................................. 57
7.1.1 DISASSEMBLY ..................................................................................................................................... 57
7.1.2 CONNECTOR FUNCTION DESCRIPTION.......................................................................................... 60
7.2 IC ............................................................................................................................................................. 61
7.3 OPERATIONAL FLOW CHART ............................................................................................................... 70
8. OPERATIONS ................................................................................................................................................ 71

DEH-P490IB/XN/UC 5
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1. SPECIFICATIONS
-DEH-P490IB/XN/UC
Backup current .................... 5 mA or less

DEH-P490IB/XN/UC
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-DEH-P4900IB/XN/UC
Backup current .................... 5 mA or less

DEH-P490IB/XN/UC
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2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
N
OTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.
• The >mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
• Screw adjacent to mark on the product are used for disassembly.
• For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions,apply as you think it appropriate.)
"
1
3
4
21
20
23
22 6
814 17
16
18
19
13 11 10
12
9
15
27

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(1) PACKING SECTION PARTS LIST
(2) CONTRAST TABLE
DEH-P490IB/XN/UC and DEH-P4900IB/XN/UC are constructed the same except for the following:
Owner's Manual,Installation Manual
Mark No. Description Part No.
1 Polyethylene Bag CEG1173
* 2 Battery CEX1065
3-1 Caution Card CRP1310
* 3-2 Caution Card See Contrast table(2)
* 3-3 Warranty Card See Contrast table(2)
3-4 Owner's Manual See Contrast table(2)
3-5 Installation Manual See Contrast table(2)
* 3-6 Caution Card XRP7008
4 Remote Control Assy CXC5719
5 •••••
6 Cord Assy XDP7001
7 Cord Assy See Contrast table(2)
8 Accessory Assy XEA7011
9 Polyethylene Bag CEG1160
10 Holder CND1249
11 Holder CND1250
12 Handle CND3707
13 Bush CNV3930
14 Screw Assy CEA5317
* 15 Polyethylene Bag CEG-127
16 Screw BPZ20P060FTB
17 Screw CBA1650
18 Screw CRZ50P090FTC
19 Screw TRZ50P080FTC
20 Unit Box See Contrast table(2)
21 Contain Box See Contrast table(2)
22 Protector XHP7016
23 Protector XHP7017
Mark No. Description Part No.
Mark No. Description DEH-P490IB/XN/UC DEH-P4900IB/XN/UC
* 3-2 Caution Card Not used CRP1294
* 3-3 Warranty Card CRY1070 CRY1246
3-4 Owner's Manual XRD7129 XRD7127
3-5 Installation Manual XRD7130 XRD7128
7 Cord Assy XDP7005 Not used
20 Unit Box XHG7126 XHG7125
21 Contain Box XHL7126 XHL7125
Part No. Language
XRD7127,
XRD7128,
XRD7129,
XRD7130
English, French, Spanish

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2.2 EXTERIOR
A
B
C
D
B
A
C
D
81
6
57
75
66
73
60
65
59
77
79
80
58
58
58
58
78
76
71
72
70
56 62 63
69
67
74
68
4
4
4
1
1
82
64 36
86
29
28
27
22
23
34
26
85
33
84
83
8332
19
319
17
87
35 20
18
25
24
11
10
12
2
215
2
2
61
8
9
7
5
37
38
38
38
38
42
44
49
47
48
46
45
40
43
55
50 53 54
41
39
52
88
30
31
18
13
90
89
A
A
B
D
91
16

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EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
1 Screw BMZ30P040FTB
2 Screw BSZ26P060FTC
3 Screw BSZ30P060FTC
4 Screw BSZ30P200FTC
5 Earth Plate CNC8915
6 Holder CND3598
7 Cushion CNM8890
8 Remote Control Assy CXC5719
9 Cover CZN7068
10 CD Mechanism Module(S10.5) CXK5763
11 Cable XDE7022
12 Cord Assy XDE7026
13 Cord Assy XDP7001
14 •••••
15 Insulator XNM7106
16 Panel See Contrast table(2)
17 Tuner Amp Unit See Contrast table(2)
18 Screw BPZ26P070FTC
19 Screw BSZ26P060FTC
20 Screw BSZ26P200FTC
21 •••••
> 22 Fuse(10 A) CEK1208
23 Plug(CN901) CKM1376
24 Plug(CN801) CKS3537
25 Connector(CN651) CKS3829
26 Connector(CN101) CKS5271
27 Connector(CN701) CKS5691
28 Antenna Jack(CN401) CKX1056
29 Holder CND1054
30 Pin Jack(CN352) XKB7001
31 Holder XNC7026
32 Holder XNC7030
33 Insulator XNM7031
34 Jack(CN171) XKS7005
35 Heat Sink YNR5031
36 Chassis Unit XXA7474
37 Detachable Assy See Contrast table(2)
38 Screw BPZ20P080FTB
39 Button XAC7149
40 Button(BAND,DISP) XAC7146
41 Spring XBH7001
42 Cover XNS7180
43 Lighting Conductor XNV7033
44 Connector(CN1901) CKS5207
45 Button(UP,DOWN,L,R) See Contrast table(2)
46 Double side Tape CNM8673
47 OLED Unit MXS8233
48 Holder XNC7028
49 Holder XNV7034
50 Knob Assy XXA7472
51 •••••
52 Sub Grille Assy See Contrast table(2)
53 Plate XNS7184
54 Grille Unit See Contrast table(2)
55 Button Unit(AUDIO,FUNC) XXA7491
56 Button CAC7752
57 Screw(M2 x 4) CBA1649
58 Screw(M2 x 4.5) CBA1925
59 Washer CBF1038
60 Spring CBH2650
61 Spring CBH2651
62 Spring CBH2652
63 Spring CBH2653
64 Holder CND1254
65 Gear CNV5997
66 Arm CNV7400
67 Arm CNV7401
68 Arm CNV7402
69 Arm CNV7403
70 Panel Unit CWM8758
71 Connector(CN1951) CKS4806
72 Connector(CN1950) CKS5192
73 Holder Unit CXB9501
74 Holder Unit CXB9502
75 Damper Unit CXB9503
76 Sub Panel Assy XXA7511
77 Cover CNM6854
78 Lighting Conductor CNV6487
79 Spring CBL1512
80 Pin CNV6486
81 Case YNB5014
82 Insulator YNM5062
83 Transistor(Q650,911) 2SD2396
84 IC(IC901) NJM2388F84
85 Choke Coil(L901) CTH1280
86 FM/AM Tuner Unit CWE1952
87 IC(IC301) PAL007C
88 Button(1-6,SW,EQ) See Contrast table(2)
89 Holder See Contrast table(2)
90 Screw See Contrast table(2)
91 Sub Spring Assy XXA7363
Mark No. Description Part No.

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(2) CONTRAST TABLE
DEH-P490IB/XN/UC and DEH-P4900IB/XN/UC are constructed the same except for the following:
Mark No. Description DEH-P490IB/XN/UC DEH-P4900IB/XN/UC
16 Panel XNS7182 XNS7181
17 Tuner Amp Unit XWM7175 XWM7176
37 Detachable Assy XXA7476 XXA7475
45 Button(UP,DOWN.L,R) XAC7150 XAC7147
52 Sub Grille Assy XXA7483 XXA7482
54 Grille Unit XXA7464 XXA7463
88 Button(1-6,SW,EQ) XAC7151 XAC7148
89 Holder Not used CNV7619
90 Screw Not used BMZ40P140FTC

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2.3 CD MECHANISM MODULE

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CD MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No.
1 CD Core Unit(S10.5COMP2) CWX3514
2 Connector(CN101) CKS4182
3 Connector(CN701) CKS4808
4 Screw BMZ20P025FTC
5 Screw BSZ20P040FTC
6 Screw(M2 x 3) CBA1511
7 Screw(M2 x 4) CBA1835
8 Washer CBF1038
9 •••••
10 Spring CBH2609
11 Spring CBH2612
12 Spring CBH2614
13 Spring CBH2616
14 Spring CBH2617
15 Spring CBH2620
16 Spring CBH2855
17 Spring CBH2937
18 Spring CBH2735
19 Spring CBH2854
20 Spring CBH2642
21 Spring CBH2856
22 Spring CBH2857
23 Spring CBH2860
24 Spring CBH2861
25 Spring CBL1686
26 Arm CND1909
27 Frame CND2582
28 Bracket CND2583
29 Arm CND2584
30 Lever CND2585
31 Arm CND2586
32 Bracket CND2587
33 Arm CND2588
34 Lever CND2589
35 Holder CNV7201
36 Gear CNV7207
37 Gear CNV7208
38 Gear CNV7209
39 Gear CNV7210
40 Gear CNV7211
41 Gear CNV7212
42 Rack CNV7214
43 Arm CNV7216
44 Roller CNV7218
45 Gear CNV7219
46 Guide CNV7361
47 Gear CNV7595
48 Guide CNV7799
49 Arm CNV7805
50 Rack CNV8342
51 Roller CNV8343
52 Holder CNV8344
53 Arm CNV8345
54 Guide CNV8347
55 Arm CNV8348
56 Arm CNV8349
57 Arm CNV8350
58 Clamper CNV8365
59 Arm CNV8386
60 Guide CNV8396
61 Arm CNV8413
62 Collar CNV8938
63 Motor Unit(M2) CXC4026
64 Arm Unit CXC4027
65 Chassis Unit CXC4028
66 Gear Unit CXC4029
67 Frame Unit CXC4031
68 Motor Unit(M1) CXC7134
69 Screw Unit CXC6359
70 Screw JFZ20P020FTC
71 Screw JGZ17P022FTC
72 Washer YE20FTC
73 Pickup Unit(P10.5)(Service) CXX1942
74 Screw IMS26P030FTC
Mark No. Description Part No.

DEH-P490IB/XN/UC
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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
ASENBO
85
MUTE
I
N
PEE 24
38
I
N
4
I
N
5
I
N
1
80
28
27
79
SYSTEM
CONTROLLER
IC 601(2/2)
PEG270A
CN401
1
2
BUS-
BUS+ TX
RX
IPPW
E
SWVDD
Q
Q832
TUNER AMP UNIT
VST,VCK,VDT
TUNL
BUSL+
BUSL-
CDL
29
DPDT
30
KYDT
1
SYSPW
42
37
ILMPW
A
5
8
1
7
CN101
11
IC 101
HA12241FP
IP-BUS DRIVER
1
2
8
6
5
B.UP
Q101
VDD
ANTENNA
Q822
Q821
20
OELPW
B
B
35
ROT1
36
ROT0
VDD
B.UP
Q801
FLPILM 40
CN651
VDD
IC420
NJM2885DL1-33 13 AUDIO8V
3.3V REGULATOR
91
CSENS
B.UP
BUSL+
BUSL-
CDL
Q102
XIN
XOUT
13
X601
11
20.00MHz
CD 7.5V REGULATOR
VD
VDCONT
B.UP
Q650
Q651
BRST,BRXEN,BSRQ,BDATA,BSCK
7
3
14
IP BUS
8
TUNPDI
TUNPCK
TUNPDO
PSENSG
RESET
15
34
3I
2
SEL-L
IC171
NJM2794V 4
1
7
13 12 65
IC704
NJM2794V 7
IC703
TC4066BFT
3
2
8
8
2
89
51
52
10
5
4
3
2
AUXINL
AUXGND
KEYD
KEYAD
10
AUDGND
KEYD
KEYAD
AUXON
IPODON
AUDL
9
10
3
5
6
7
4
1
CN171
CN701
ACC ID
ACC PW
DOCK TX
DOCK RX
iPOD GND
F/W PWR
IC 702
TC7SH08FUS1
RX
3.3V 5.5V
TX
5.5V 3.3V
IC 701
TC7SET08FUS1
Q707
Q706
4
1
1
4
63
66
33
64
87
PID
IPTX
IPRX
PVSENS
2
IC641
NJM2885DL1-33
VDD 3.3V REGULATOR
31
CDRST
4
18
SWVDD CONT
R
Q
8
Q
8
O
ILB CONTR
O
PSENS
S802
DETACH SENSE SW
39
DSENS
EJTIN
←
←
SL
CE1
CE2
B.UP
65 PPW
Q701 Q703
Q705
Q702
VDD
FMRF
ANT adj RF adj
FM ANT
T51 CF52
RFGND OSCGND DGND AUDIOGND NC VCC VDD_3.3
3.3V 2.5V
IC4
3.3V 2.5V
IC2
2.5V
CE2
ROM_VDD
SL
DI
CK
CE1
NC
DO
NC NC NC NC
7 6 13 5 10 9 8 11 14 18 19 20 21
1
3
212 1522 16 4 17
IC1
3.3V
AM ANT FMRF
ATT
LPF
OSC
IC3 EEPROM
5.0V
IC5
5V 3.3V
ATT
MIXER, IF AMP DET, FM MPX,
23
Lch
←
←
NC
FM/AM TUNER UNIT
PICKUP UNIT
(P10.5)(SERVICE)
CD CORE UNIT(S10.5COMP2)
C
BRST,BRXEN,BSRQ
CN701
Q101
M
LASER
DIODE
MONITOR
DIODE
S903
DSCSNS
SPINDLE
MOTOR
M
CARRIAGE
MOTOR
LOAD/
LD-
MD
15
5
HOLOGRAM
UNIT
IC301
BA5839FP IC201
PE5547A
RF-AMP, CD DECODER,
MP3/WMA DECODER,
DIGITAL SERVO /
DATA PROCESSOR
CD
DRIVER
2
VD
VD
13
LOUT
9
CN101
16 SOP
15 SOM
18 LCOP
17 LCOM
21
CLCONT
55
LOUT
9
CONT
TD,FD
AC,BD,F,E
SD,MD
S901
HOME
S904
12EJ S905
8EJ
LD+ 14
141 LD
142 PD
12EJ
CONT
CLCONT
HOME
8
9
43
41
VDD
1
VDD
BDATA,BSCK
Q102
39
/PUEN
VDD
15
5
FOCUS ACT.
TRACKING ACT.
FOP
TOP 2
1TOP
FOP
11 FOP
14 TOP
2
1
14
8EJ
7
DSCSNS
6
VCC
16
/RESET 8
/RESET
88
VREF REFO 133 REFOUT
33
FOM FOM
12 FOM
44
TOM TOM
13 TOM
22
LOEJ LOEJ
5
52
50
X201
XTAL
/XTAL 16.93MHz
VDSENS 11
VD

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10
1
BSENS
ASENS
VDD
B.UP
72
73
6
Front_L 7
Rear_L
85
MUTE
IL+B
SW+5V
23
21
3
5
FL-
FL+
RL-
RL+
ACC
IN2_L
PEE 24
38
IN4+_L
4
IN4-_L
5
IN1_L
1FLin
14
RLin
12
22 4
RESET
POWER AMP
IC 601(1/2)
PEG270A
M
L
LER
2
/2)
0
A
IC201
PML015B
IC602
S-80835CNMC-B8U
IC 301
PAL007C
RESET
VDD
Q911
Q931
SYSPW
ELECTRONIC VOLUME/
SOURCE SELECTOR
SWVDD
STBYMUTE
Q831
Q832
2
VST,VCK,VDT
TUNL
BUSL+
BUSL-
CDL
DPDT
29
DPDT
30
KYDT KYDT
B.UP
1
SYSPW
Q301
MUTE
SWL
FL
Q352
Pre/SW_L
42
7
2
11
14
7
2
11
14
CN1950
CN1951
4
2
10
8
PANEL UNIT
37
ILMPW
MUTE
SYSTEM
CONTROLLER
25
B.REM
VDD REGULATOR
BACKUP SENSE
ACC SENSE
D
CN901
Q982
B.UP
SL
TUNPCE2
TUNPCE1
TUNPDI
TUNPDO
95
69
70
43
44
TUNPCK
45
CE2
CE1
TUNPDI
TUNPDO
TUNPCK
Q912
DALMON 67
B.UP
6,20
Q981
10 10 5
Q353
SWL
FL
Q941
ISENS 81
SML ILM SENSE
Q822
Q821
20
OELPW
Q852
Q851
IC851
NJM2360M
6,7 1
BZ621
BUZZER
13 13 9
12 12 7
ROT1
ROT0
35
ROT1
36
ROT0
VDD
CN801
88
S1970
EJECT
99
DGND
B.UP
5
6
5
6
Q801
FLPILM 40
RL
Q351
2
CN352
RL
OEL+B
FL-
FL+
RL-
RL+
B.UP
GND
ACC
B.REM
ILM
SL
44 3
91
CSENS
AUDIO8V B.UP
SYS +B REGULATOR
1
2IC 901
NJM2388F84
4
6
DC/DC CONVERTER
B.UP FILM+
FILM-
ILM
B.UP
MUTE
VCC FL-
FL+
RL-
RL+
E-MUTE
B.REM
EJECT
3
9
11
12
10
1
6
2
5
3IN3_L
2
SEL-L
12V REGULATOR
CSENS
SWVDD CONTROL
12
4
Q820
Q819
Q201
Q202
OEL+B
VP
13
OEL+B CONTROL
ILB CONTROL
S802
DETACH SENSE SW
39
DSENS
EJTIN
CSENS
2
IL+B
SW+5V
OEL+B
IC 1921
PEG268A
KEY/OEL CONTROLLER
9
11
8
VCC
7
CN1901
KEYBOARD UNIT
3
5
DPDT
KYDT
IC 1902
GP1UX51RK
REMOTE CONTROL
SENSOR
OPT IN
3
110 REM
12
13
DPDT
KYDT 7
B
S1988
3
2
1
4
6ROT1
ROT0
KEY MATRIX
ILLUMINATION
Q2011
Q2012
ADKEY0 ADKEY1
14V
8.5V
ADKEY2
18
5.1V
5.1V
XIN
XOUT
6
X1921
10.000MHz
4
10
17 15
13,16 6
4
5
S1971-S1975
S1976-S1981
S1982-S1987
SOURCE (ENCODER)
8.5V
REGULATOR
VREF
16
OLED UNIT
REGS VDD
VAH VKH
OEL DATA

DEH-P490IB/XN/UC
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3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
A-a
A D
A-a
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or
"ELECTRICAL PARTS LIST".
105
BCN1901
C
CN701
DPANEL UNIT
FM/AM TUNER UNIT
For resistors and capacitors in the circuit diagrams, their resistance values or
capacitance values are expressed in codes:
Ex. *Resistors
Code Practical value
123 12k ohms
103 10k ohms
*Capacitors
Code Practical value
103 0.01uF
101/10 100uF/10V
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
P
IPBUS:2.2 dBs
FM,AM(400 Hz,30 %) : -24 dBs
AUX/IPOD : 2.2 dBs
CD:0 dBs

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A-b
A
A-a A-b
A-a A-b
A-b
A-a
10A
600uH
3A
100/25
100/25
100/25
100/25
100/25
100/25
NC
NC
NC
NC NC NC
NC
NC
PPOWER
SUB
WOOFER
R CH
SUB
WOOFER
L CH
FRONT
L CH
FRONT
R CH
REAR
L CH
REAR
R CH
ATUNER AMP UNIT
The >mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
>
>
P4900IB
P490IB
DETACH
SYSTEM CONTROLLER
FM,AM:21.1 dBs
IPBUS:36.3 dBs
CD:36.1 dBs
AUX/IPOD:35.3 dBs
FM,AM:-4.9 dBs
IPBUS:10.3 dBs
CD:10.1 dBs
AUX/IPOD:9.3 dBs

DEH-P490IB/XN/UC
20
1234 1234
C D F A B E
A-a A-b
A-b
12
600uH
3A
100/25
100/25
100/25
100/25
100/25
100/25
NC
NC
NC
NC NC NC
NC
NC
PPOWER
SUB
WOOFER
R CH
SUB
WOOFER
L CH
FRONT
L CH
FRONT
R CH
REAR
L CH
REAR
R CH
A
TUNER AMP UNIT
>
>
P4900IB
P490IB
SYSTEM CONTROLLER
FM,AM:-4.9 dBs
IPBUS:10.3 dBs
CD:10.1 dBs
AUX/IPOD:9.3 dBs

DEH-P490IB/XN/UC 21
5678
5678
C D
F
A
B
E
A-a A-b
A-b
345
10A
NC NC NC
The >mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
>
DETACH
FM,AM:21.1 dBs
IPBUS:36.3 dBs
CD:36.1 dBs
AUX/IPOD:35.3 dBs

DEH-P490IB/XN/UC
22
1234 1234
C D F A B E
A-bA-a
A-a
A-b
12
NC
NC
FM/AM TUNER UNIT
P4900IB
P490IB
IPBUS:2.2 dBs
FM,AM(400 Hz,30 %) : -24 dBs
AUX/IPOD : 2.2 dBs

DEH-P490IB/XN/UC 23
5678
5678
C D
F
A
B
E
A-a
A-b
A-bA-a
D
345
105
B
CN1901
C
CN701
D
PANEL UNIT
For resistors and capacitors in the circuit diagrams, their resistance values or
capacitance values are expressed in codes:
Ex. *Resistors
Code Practical value
123 12k ohms
103 10k ohms
*Capacitors
Code Practical value
103 0.01uF
101/10 100uF/10V
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
CD:0 dBs

DEH-P490IB/XN/UC
24
1234
1234
C
D
F
A
B
E
3.3 KEYBOARD UNIT
B
DEH-P490IB/XN/UC DEH-P4900IB/XN/UC
FUNC
TION
DISP
LAY
CLOCK
D
CN1951