Pioneer DEH-240F User manual

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
C PIONEER CORPORATION 2001 K-ZZD. NOV. 2001 Printed in Japan
ORDER NO.
CRT2757
HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-240F XN/UC
Service
Manual
DEH-240F/XN/UC
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST.......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...10
4. PCB CONNECTION DIAGRAM ................................24
5. ELECTRICAL PARTS LIST ........................................32
6. ADJUSTMENT..........................................................37
7. GENERAL INFORMATION .......................................41
7.1 DIAGNOSIS ........................................................41
7.1.1 DISASSEMBLY .........................................41
7.1.2 CONNECTOR FUNCTION DESCRIPTION.......44
7.2 PARTS .................................................................45
7.2.1 IC................................................................45
7.2.2 DISPLAY....................................................53
7.3 OPERATIONAL FLOW CHART...........................54
7.4 CLEANING ..........................................................55
8. OPERATIONS AND SPECIFICATIONS.....................56
-This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-977 CRT2624 S9 CD Mech. Module:Circuit Description, Mech.Description, Disassembly
DEH-2400F XN/UC
DEH-24F XN/UC
For details, refer to "Important symbols for good services" on the next page.

2
DEH-240F,2400F,24F
-CD Player Service Precautions
1. For pickup unit(CXX1480) handling, please refer
to"Disassembly"(see page 41).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a jumper-solder).
2. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
3. Please checking the grating after changing the pickup
unit(see page 38).
4. In this product, because the memory capacity of the
microcomputer is insufficient, the test mode is not
installed. However grating of the pickup unit can be
confirmed.
[ 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.

3
DEH-240F,2400F,24F
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.
WARNING
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
1. SAFETY INFORMATION

4
DEH-240F,2400F,24F
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
18 21
22
16
15
12
14
13
2
17
1
4
10
3
11
7
85
9
6

5
DEH-240F,2400F,24F
Part No.
Mark No. Symbol and Description DEH-240F/XN/UC DEH-2400F/XN/UC DEH-24F/XN/UC
1-1 Owner's Manual CRD3497 CRD3498 CRD3498
1-2 Installation Manual CRD3501 CRD3502 CRD3502
* 1-3 Card Not used ARY1048 ARY1048
* 1-4 Warranty Card CRY1070 Not used Not used
13 Carton CHG4645 CHG4643 CHG4644
14 Contain Box CHL4645 CHL4643 CHL4644
17 Case Assy CXB3520 Not used Not used
(2) CONTRAST TABLE
DEH-240F/XN/UC, DEH-2400F/XN/UC and DEH-24F/XN/UC are constructed the same except for the fol-
lowing:
-Owner's Manual, Installation Manual
Model Part No. Language
DEH-240F/XN/UC CRD3497 English, French, Spanish
CRD3501
DEH-2400F/XN/UC CRD3498 English, French, Spanish
DEH-24F/XN/UC CRD3502
1-1 Owner’s Manual See Contrast table(2)
1-2 Installation Manual See Contrast table(2)
* 1-3 Card See Contrast table(2)
* 1-4 Warranty Card See Contrast table(2)
1-5 Polyethylene Bag CEG1116
2 Cord Assy CDE6468
3 Spring CBH1650
4 Screw Assy CEA2796
5 Screw CBA1002
* 6 Polyethylene Bag CEG-127
7 Screw CRZ50P090FMC
8 Screw TRZ50P080FMC
* 9 Polyethylene Bag CEG-158
10 Handle CNC5395
11 Bush CNV3930
12 Polyethylene Bag CEG1173
13 Carton See Contrast table(2)
14 Contain Box See Contrast table(2)
15 Protector CHP2251
16 Protector CHP2252
17 Case Assy See Contrast table(2)
18 Screw BPZ20P060FZK
19 •••••
20 •••••
21 Accessory Assy CEA2773
22 Earth Plate CNC9450
Mark No. Description Part No. Mark No. Description Part No.
(1) PACKING SECTION PARTS LIST
NOTE:
-Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.
-Screws 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.)

6
DEH-240F,2400F,24F
A
B
C
2.2 EXTERIOR

7
DEH-240F,2400F,24F
1 Screw BMZ30P040FZK
2 Screw BMZ30P100FMC
3 Screw BSZ26P060FMC
4 Screw BSZ30P060FMC
5 Cord Assy CDE6468
6 •••••
7 Cable CDE6610
8 Fuse(10A) CEK1136
9 Case CNB2686
10 Holder CNC5704
11 Holder CNC8659
12 Cushion CNM4870
13 Insulator CNM6948
14 Tuner Amp Unit CWM8319
15 Screw ASZ26P060FMC
16 Screw BPZ26P080FMC
17 Screw BSZ26P160FMC
18 Pin Jack(CN351) CKB1028
19 Terminal(CN404) CKF1059
20 Plug(CN901) CKM1330
21 Plug(CN750) CKS3537
22 Connector(CN501) CKS3835
23 Antenna Jack(CN402) CKX1056
24 Holder CNC8615
25 Holder CNC9619
26 Insulator CNM6949
27 Heat Sink CNR1614
28 FM/AM Tuner Unit CWE1563
29 Holder CNC8815
30 Chassis Unit CXB6100
31 Button(EJECT) CAC6839
32 Screw(M2x2) CBA1176
33 Washer CBF1038
34 Washer CBF1039
35 Spring CBH2428
36 Spring CBH2429
37 Spring CBL1512
38 Holder CNC9096
39 Cover CNM6854
40 Panel CNS6278
41 Pin CNV6486
42 Lighting Conductor CNV6487
43 Gear CNV6507
44 Arm CNV6508
45 Panel Unit CWM7375
46 Socket(CN1950) CKS3550
47 Connector(CN1951) CKS4206
48 Damper Unit CXB5070
49 Holder Unit CXB6356
50 Holder Unit CXB6357
51 Clutch Unit CXB6358
52 Screw IMS20P045FZK
53 Detach Grille Assy See Contrast table(2)
54 Screw BPZ20P100FZK
55 Button(1-6) CAC7225
56 Button(OPEN) CAC7227
57 Button(LOUD) CAC7229
58 Button(EQ) CAC7231
59 Button(CLOCK) CAC7233
60 Button(AUDIO) CAC7234
61 Button(LOCAL) CAC7235
62 Button(BSM) CAC7236
63 Knob CAC7527
64 Spring CBH2430
65 Spring CBH2431
66 Spring CBH2630
67 Cover CNS6740
68 Holder CNV6505
69 Holder CNV6506
70 Keyboard Unit See Contrast table(2)
71 LCD See Contrast table(2)
72 Connector(CN1901) CKS4524
73 Holder CNC9757
74 Sheet CNM7647
75 Connector CNV6440
76 Lighting Conductor CNV7244
77 Sub Grille Assy See Contrast table(2)
78 CD Mechanism Module(S9ANA)CXK5501
79 Screw ISS26P055FUC
80 Transistor(Q510,910) 2SD2396
81 IC(IC361) TDA7386
82 Panel CNS6332
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
Part No.
Mark No. Symbol and Description DEH-240F/XN/UC DEH-2400F/XN/UC DEH-24F/XN/UC
53 Detach Grille Assy CXB8786 CXB8784 CXB8785
70 Keyboard Unit CWM8370 CWM8370 CWM8322
71 LCD CAW1724 CAW1724 CAW1719
77 Sub Grille Assy CXB8792 CXB8790 CXB8791
(2) CONTRAST TABLE
DEH-240F/XN/UC, DEH-2400F/XN/UC and DEH-24F/XN/UC are constructed the same except for the fol-
lowing:

8
DEH-240F,2400F,24F
D
(GEM1035)
(UD321BR)
2.3 CD MECHANISM MODULE

9
DEH-240F,2400F,24F
Mark No. Description Part No. Mark No. Description Part No.
1 Control Unit CWX2481
2 Connector(CN701) CKS1959
3 Connector(CN101) CKS3486
4 Screw BMZ20P025FMC
5 Screw BSZ20P040FMC
6 Screw(M2x4) CBA1362
7 Screw(M2x3) CBA1527
8 Screw CBA1545
9 Washer CBF1037
10 Washer CBF1038
11 Washer CBF1039
12 Washer CBF1060
13 Spring CBH2378
14 Spring CBH2379
15 Spring CBH2514
16 Spring CBH2533
17 Spring CBH2382
18 Spring CBH2383
19 Spring CBH2384
20 Spring CBH2527
21 Spring CBH2386
22 Spring CBH2537
23 Spring CBH2390
24 Spring CBH2391
25 Spring CBH2523
26 Spring CBH2426
27 Spring CBH2444
28 Spring CBL1561
29 Spring CBL1553
30 Shaft CLA3845
31 Roller CLA3910
32 Frame CNC9654
33 Lever CNC9664
34 Lever CNC8949
35 Arm CNC9661
36 Arm CNC9016
37 Arm CNC9017
38 Bracket CNC9123
39 Frame CNC9656
40 Belt CNT1086
41 Gear CNV6886
42 Gear CNV6316
43 Gear CNV6317
44 Gear CNV6318
45 Gear CNV6319
46 Gear CNV6320
47 Arm CNV6322
48 Arm CNV6323
49 Arm CNV6324
50 Arm CNV6888
51 Arm CNV6889
52 Guide CNV6327
53 Arm CNV6924
54 Guide CNV6921
55 Rack CNV6923
56 Clamper CNV6331
57 Arm CNV6332
58 Guide CNV6333
59 Cover CNV6334
60 Arm CNV6335
61 Guide CNV6336
62 Roller CNV6338
63 Damper CNV6339
64 Damper CNV6340
65 Guide CNV6925
66 Chassis Unit CXB7980
* 67 Arm Unit CXB7983
68 Arm Unit CXB7984
69 Arm Unit CXB7985
70 Motor Unit(M2) CXB5903
71 Screw Unit CXB5904
72 Gear Unit CXB8076
73 Bracket Unit CXB7982
74 Motor Unit(M1) CXB6007
75 Arm Unit CXB8504
76 Screw(M2x5) EBA1028
77 Screw JFZ20P020FMC
78 Screw JGZ17P020FZK
79 Washer YE15FUC
80 Washer YE20FUC
81 Pickup Unit(Service)(P9) CXX1480
82 Screw IMS26P030FMC
83 Guide CNV6922
84 Roller CNV6887
85 Spring CBH2509
86 Spring CBH2512
87 Spring CBH2536
88 Collar CNV6906
-CD MECHANISM MODULE SECTION PARTS LIST

10
DEH-240F,2400F,24F
A
1234
B
C
D
1234
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
VDCONT
Q510
Q511
B.U
ANTENNA CN402
LOCL
Q410
VCC VDD
PCE2
PCK
PCE1
SL
SD
PDIO
S
S
T
T
T
T
L
I
I
6
76
14
13
48
12
57
2
3
CN501
CDL
SYSTEM
CONTROLL
IC 610(2/
PE5262B
CD5VON
34
23
79
32
21
35
VDCONT
HOME
DSCSNS
LOEJ
CONT
LOEJ
CONT
T
11
PDIO
TUNER AMP UNIT
VD
CD5VON
IC 3
EEPROM
FM/AM TUNER UNIT
28
27
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
IC1
MIXER, IF AMP, DET.
6
21
18
LDET
COMP
22
25 10 14 12 15 16 8 13 2 3 4
CF202
VDD
VCC
DI/DO CE2 CK CE1 SDBW SL FMSD NL1 NL2
IC 2 FM MPX
AMANT
FMANT
ATT
ATT
AMRF
FMRF
IMG ADJ
RF ADJ
X901
10.25MHz
ANT ADJ
LOCL
23 LOCH
AMDET
MPXREF 41kHz
AM 2ND IF
450kHz
19
CREQ
11
DGND
1
STIND
L ch
5
R ch
924
NC
FMLOCL
20177
NC NC WC
26 RFGND
CN701
Q101
M
LASER
DIODE
MONITOR
DIODE
CLAMP
SENSE
DISC
SENSE
FOCUS ACT.
SPINDLE
MOTOR
M
CARRIAGE
MOTOR
LOAD/
TRACKING ACT.
LD-
MD
FO+
TO+
15
5
1
4
PICKUP UNIT
(SERVICE)(P9)
HOLOGRAM
UNIT
IC 401
BA5996FM
IC 201
TC9495F2
IC 701
BA05SFP
+5V REGULATOR
SERVO
CONTROL,
DSP,
LPF, DAC
CD
DRIVER
17
DSCSNS
2
VD
VD
VDD
11
CONT
10
LOEJ
14
L-OUT
1
CD5VON
CN101
TOP
FOP
16 SOP
15 SOM
17 LCOP
18 LCOM 22
1
2
LOEJ
78
85
L_OUT
79
9
MUTE
12 FOP TD/FD
AC,BD
F,E
SD/MD
38 RFI
43 FEI
4
14 TOP
S901
HOME
12EJ
SENSE 8EJ
SENSE
HOME 16
LD+ 14 VDD
9LDO
8MDI
IC 101
TA2153FN
RFRPIN
FEO
TEO
24
16
14 46 TEI
RF-AMP
CONTROL UNIT
17
2
11
10
14
1
16
A
D
PCE1
PCK
PCE2

DEH-240F,2400F,24F
5678
A
B
C
D
567811
KYDT
DPDT
IC 1900
PD6340A
5
3
8
14
11
10 KEY MATRIX
SD
SL
TUNPCE
TUNPCK
TUNPCE2
TUNPDO
LOCL
IN2_L
IN3_L
6
76
14
13
48
12
57
2
3
SYSTEM
CONTROLLER
IC 610 (1/2)
PE5262B
VST
VCK
VDT
B.U
VDD Q913
B.U BACKUP
FL-
FL+
RL-
RL+
ACC
2
1
10
12
9
11
3
ELECTRONIC VOLUME
IC 301
PML003AM
SYSTEM
CONTROLLER
IC 610(2/2)
PE5262B
ASENS 64
BSENS 63
TELIN 38
SYSPW 42
MUTE 44
KYDT 8
DPDT 9
RESET 60
SWVDD 41
Frontout_L 10
Rearout_L 11
POWER AMP
IC 361
TDA7386
14
12
22 4
5
3
21
23
FL
MUTE STBY
RL
B.U
bsens
asens Q920
Q361 MUTE
Q921
KEYBOARD UNIT
CN1901CN750
LCD
20
18
Q750
RESET
IC 603
S-80834ANY VDD
12
SYSPW
6
B.REM
FUSE
10A
N
NT
NS
TUNPDI
11
PDIO
VST/ VCK/ VDT
VDD
VDD
VLCD
56
10
CN901
Q 351
CN351
REAR L CH
Q359
BACK UP
FL-
FL+
RL-
RL+
B.REM
ACC
GND
C
PCE1
PCK
PCE2
ANTIN 52
KYDT
DPDT
SW5V
KEY CONTROL
LCD DRIVER
2
1
10
12
9
11
3
6
SYSPW
Q910 Q911
B.U
VCC
Q912
RESET
IC 603
S-80834ANY
12
VCC REGULATOR
VDD REGULATOR
14
11
10
CN1950
8
10
5
CN1951
13 13
88 S1950
EJECT
EJECTS 53
12 12
94
76
S1922 VOLUME
ROT0
ROT1
ROT0
ROT1
ROT0
ROT1
37
36
PANEL UNIT
B
S750
DSENS
Q751
B.U
Q753
B.U
Q752
99
66
55
77
44 310
CSENS
ILB+
FILM+
FILM-
EJECT
µGND
CSENS
KYDT
DPDT
IL+B
SW+5V
94
ILLUMINATION
ILLUMINATION
ILMPW 40
FLPILM 20
DSENS 64
CSENS 80
B.REMOTE
IC 901
TPD1018F
61

12
DEH-240F,2400F,24F
A
1234
B
C
D
1234
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A-a A-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page
A
FM(100%):-19.5dBs
AM(30%):-30dBs
DCONTROL UNIT FM/AM TUNER UNIT
A
A
CKEYBOARD UNIT
BPANEL UNIT
183 183
162 162
272
272
104 393 CSS1023 4.194MHz
0R0
R791
DSENS
EJECT
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
ANTENNA
JACK
SYST
ELECTRONIC
A-a
B

13
DEH-240F,2400F,24F
5678
A
B
C
D
5678
A
FM(100%):+3.6dBs
AM(30%):-6.9dBs
CD:+10.2dBs
CD:+9.4dBs
FM(100%):+29.6dBs
AM(30%):+19.1dBs
CD:+36.2dBs
ATUNER AMP UNIT
RR+
RR-
FR+
FR-
FL+
FL-
RL+
RL-
ACC
GND
B.REM
BACK UP
CEK1136
>
10A
RR
RL
PRE OUT
600µH
EM CONTROLLER
MUTE
POWER AMP
VOLUME
VDD REGULATOR
SYS+B REGULATOR
BACK UP SENSE
ACC SENSE
B.REMOTE
VCC REGULATOR
A-b

14
DEH-240F,2400F,24F
A
1234
B
C
D
1234
A-a
A-a A-b
FM(100%):-19.5dBs
AM(30%):-30dBs
FM/AM TUNER UNIT
183
183
162
162
272
272
3CSS1023 4.194MHz
0R0
R791
ANTENNA
JACK
SYSTEM CO
ELECTRONIC VOLU
1

15
DEH-240F,2400F,24F
5678
A
B
C
D
5678
A-a A-b
DCONTROL UNIT
A
A-
CKEYBOARD UNIT
BPANEL UNIT
104 393
DSENS
EJECT
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
6
5
2 3 4
7
A-a
B

16
DEH-240F,2400F,24F
A
1234
B
C
D
1234
A-a A-b
A-b
FM(100%):+3.6dBs
AM(30%):-6.9dBs
CD:+10.2dBs
CD:+9.4dBs
FM(100%):+29.6dBs
AM(30%):+19.1dBs
CD:+36.2dBs
ATUNER AMP UNIT
RR
RL
PRE OUT
600µH
TEM CONTROLLER
MUTE
POWER AMP
C VOLUME
1

17
DEH-240F,2400F,24F
5678
A
B
C
D
5678
A-b
A-a A-b
FM(100%):+29.6dBs
AM(30%):+19.1dBs
CD:+36.2dBs
RR+
RR-
FR+
FR-
FL+
FL-
RL+
RL-
ACC
GND
B.REM
BACK UP
CEK1136
>
10A
VDD REGULATOR
SYS+B REGULATOR
BACK UP SENSE
ACC SENSE
B.REMOTE
VCC REGULATOR
6
5
2 3 4
7

18
DEH-240F,2400F,24F
A
1234
B
C
D
1234
3.3 KEYBOARD UNIT
CLOC
←
←
LCD
5
DEH-340/XN/UC
DEH-3400/XN/UC
SML-310PT
CSG1107
CSG1107
CSG1107
CAW1724
D1919,1920
S1900
S1901-1906
S1908-1916
LCD
DEH-34/XN/UC
SML-310DT
CSG1133
CSG1117
CSG1117
CAW1719
KEY CONTROL AND
DISPLAY DRIVER
C

DEH-240F,2400F,24F
5678
A
B
C
D
567819
B
CN1951
CKEYBOARD UNIT
CLOCK
←
←
←
←
LOUD
BSM
NSSW440-9159 NSSW440-9159
VOLUME
5
EQ
32
SOURCE
1
46
BAND
AUDIO
LOCAL
CSG1111
CSG1111
CSD1077
C

20
DEH-240F,2400F,24F
A
1234
B
C
D
1234
3.4 CD MECHANISM MODULE
D
M1 CXB6007
M2 CXB5903
LOADING/CARRIAGE
SPINDLE
RF AMP
S
ACT/MOTOR DRIVER
5V REGULATOR
CN101
DCONTROL UNIT
PICKUP UNIT(SERVICE)(P9)