PIONEER DEH 20UB, DEH 2150UB, DEH 2150UBG Service 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

PIONEER CORPORATION 2008

CD RECEIVER

ORDER NO.

CRT4228

DEH-20UB/XS/UC

DEH-20UB

DEH-2150UBG
DEH-2150UB
DEH-2150UB

This service manual should be used together with the following manual(s):

Model No. Order No. Mech.Module Remarks

CX-3240 CRT4050 S10.5COMP2-iPod/USB CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly

/XS/ES

/XU/CN5

/XS/ES

/XS/UC

For details, refer to "Important Check Points for Good Servicing".

K-ZZZ. OCT. 2008 Printed in Japan

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SAFETY INFORMATION

CAUTION

WARNING

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:

This product contains 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

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 safety 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 safety, you should not risk trying to do so
and refer the repair to a qualified service technician.

CAUTION:

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

WARNING!

The AEL (accessible emission level )of the laser power output is less than CLASS 1
but the laser component is capable of emitting radiation exceeding the limit for
CLASS 1.
A specially instructed person should do servicing operation of the apparatus.

Laser diode characteristics

Wave length : 785 nm to 814 nm

Maximum output : 1 190 µW(Emitting period : unlimited)

Additional Laser Caution

Transistors Q101 in PCB drive the laser diodes.
When Q101 is shorted between their terminals, the laser diodes will radiate beam.
If the top cover is removed with no disc loaded while such short-circuit is continued,
the naked eyes may be exposed to the laser beam.

- 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
results.

Caution:

1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.

CAUTION
CLASS 1M INVISIBLE LASER RADIATION WHEN OPEN. DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS

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.
Discord used batteries according to the manufacture's instructions.

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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.

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.

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.
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.

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.

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.

3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.

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.

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CONTENTS

SAFETY INFORMATION ..................................................................................................................................... 2

1. SERVICE PRECAUTIONS ............................................................................................................................... 5

1.1 SERVICE PRECAUTIONS......................................................................................................................... 5

1.2 NOTES ON SOLDERING .......................................................................................................................... 5

2. SPECIFICATIONS ............................................................................................................................................ 6

2.1 SPECIFICATIONS...................................................................................................................................... 6

2.2 DISC/CONTENT FORMAT ........................................................................................................................ 9

2.3 PANEL FACILITIES.................................................................................................................................. 10

2.4 CONNECTION DIAGRAM ....................................................................................................................... 13

3. BASIC ITEMS FOR SERVICE........................................................................................................................ 14

3.1 CHECK POINTS AFTER SERVICING..................................................................................................... 14

3.2 PCB LOCATIONS .................................................................................................................................... 15

3.3 JIGS LIST ................................................................................................................................................ 16

3.4 CLEANING............................................................................................................................................... 16

4. BLOCK DIAGRAM.......................................................................................................................................... 18

4.1 BLOCK DIAGRAM................................................................................................................................... 18

5. DIAGNOSIS.................................................................................................................................................... 21

5.1 OPERATIONAL FLOWCHART ................................................................................................................ 21

5.2 ERROR CODE LIST................................................................................................................................ 22

5.3 CONNECTOR FUNCTION DESCRIPTION............................................................................................. 24

6. SERVICE MODE............................................................................................................................................ 25

6.1 DISPLAY TEST MODE ............................................................................................................................ 25

6.2 CD TEST MODE...................................................................................................................................... 26

7. DISASSEMBLY............................................................................................................................................... 27

8. EACH SETTING AND ADJUSTMENT ........................................................................................................... 30

8.1 CD ADJUSTMENT................................................................................................................................... 30

8.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT.................................................... 31

9. EXPLODED VIEWS AND PARTS LIST.......................................................................................................... 34

9.1 PACKING ................................................................................................................................................. 34

9.2 EXTERIOR (1) ......................................................................................................................................... 36

9.3 EXTERIOR (2) ......................................................................................................................................... 38

9.4 CD MECHANISM MODULE..................................................................................................................... 40

10. SCHEMATIC DIAGRAM ............................................................................................................................... 42

10.1 TUNER AMP UNIT(GUIDE PAGE) ........................................................................................................ 42

10.2 KEYBOARD UNIT.................................................................................................................................. 48

10.3 CD MECHANISM MODULE(GUIDE PAGE) .......................................................................................... 50

10.4 WAVEFORMS........................................................................................................................................ 56

11. PCB CONNECTION DIAGRAM ................................................................................................................... 60

11.1 TUNER AMP UNIT................................................................................................................................. 60

11.2 KEYBOARD UNIT.................................................................................................................................. 64

11.3 CD CORE UNIT(S10.5COMP2-USB-C3).............................................................................................. 66

12. ELECTRICAL PARTS LIST .......................................................................................................................... 68

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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
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.

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.

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.
GYP1008 0.3 in dia.

1. SERVICE PRECAUTIONS

1.1 SERVICE PRECAUTIONS

1.2 NOTES ON SOLDERING

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2. SPECIFICATIONS

General

Power source............................14.4 V DC (10.8 V to 15.1 V

allowable)

Grounding system................... Negative type

Max. current consumption

.................................................10.0 A

Dimensions (W × H × D):

DIN

Chassis..................... 178 mm × 50 mm × 165

mm
(7 in. × 2 in. × 6-1/2 in.)

Nose........................... 188 mm × 58 mm × 15 mm

(7-3/8 in.× 2-1/4 in.× 5/8 in.)

D

Chassis..................... 178 mm × 50 mm × 165

mm
(7 in.× 2 in.× 6-1/2 in.)

Nose........................... 170 mm × 48 mm × 15 mm

(6-3/4 in.× 1-7/8 in.× 5/8 in.)

Weight .......................................... 1.3 kg (2.9 lbs)

Audio

Maximum power output ....... 50 W × 4

Continuous power output ... 22 W × 4 (50 Hz to 15000

Hz, 5% THD, 4

load, both

channels driven)

Load impedance ...................... 4

(4 to 8 allowable)

Preout max output level ....... 2.0 V

Tone controls:

Bass

Frequency................ 100 Hz

Gain ............................±13dB

Mid

Frequency................ 1 kHz

Gain ............................ ±12 dB

Treble

Frequency................ 10 kHz

Gain ............................ ±12 dB

CD player

System ..................................... Compact disc audio system

Usable discs .......................... Compact disc

Signal-to-noise ratio............. 94 dB (1 kHz) (IHF-A net-

work)

Number of channels ............. 2 (st ereo)

MP3 decoding format ..........MPEG-1 & 2 Audio Layer 3

WMA decoding format ........ Ver. 7,7.1, 8, 9, 10, 11 (2ch

audio)

(Windows Media Player)

WAV signal format ................ Linear PCM & MS ADPCM

(Non-compressed)

USB

Specification ............................. USB 2.0 full speed

Supply current ......................... 500 mA

Maximum amount of memory

................................................ 250 GB

Minimum amount of memory

................................................ 256 MB

USB Class................................ MSC (Mass Storage Class)

File system............................... FA T16, FAT32

MP3 decoding format ........... MPEG-1 & 2 Audio Layer 3

WMA decoding format ......... Ver. 7, 7.1, 8, 9, 10, 11 (2ch

audio)
(Windows Media Player)

WAV signal format ..................Linear PCM & MS ADPCM

(Non-compressed)

FM tuner

Frequency range................... 87.9 MHz to 107.9 MHz

Usable sensitivity.................. 11 dBf (0.7 μV/75

, mono,

S/N: 30 dB)

Signal-to-noise ratio............. 72 dB (IHF-A network)

AM tuner

Frequency range...................... 530 kHz to 1 710 kHz

Usable sensitivity..................... 25 μV (S/N: 20 dB)

Signal-to-noise ratio............... 62 dB (IHF-A network)

CEA2006 Specifications

Power output ............................. 14 W RMS × 4 Channels

(4 and

1 % THD+N)

S/N ratio ....................................... 91 dBA (reference: 1 W into

4)

Note

Specifications and the design are subject to mod­ifications without notice due to improvements.

Backup current ........................... 2 mA or less

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2.1 SPECIFICATIONS

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DEH-2150UBG/XS/ES, DEH-2150UB/XS/ES

General

Rated power source..............14.4 V DC

(allowable voltage range:

12.0 V to 14.4 V DC)

Grounding system.................. Negative type

Max. current consumption

................................................ 10.0 A

Backup current .......................... 2 mA or less

Dimensions (W × H × D):

DIN

Chassis..................... 178 mm × 50 mm × 165

mm

Nose.......................... 188 mm × 58 mm × 15 mm

D

Chassis..................... 178 mm × 50 mm × 165

mm

Nose........................... 170 mm × 48 mm × 15 mm

Weight ........................................ 1.3 kg

Audio

Maximum power output ....... 50 W × 4

Continuous power output ... 22 W × 4 (50 Hz to 15000

Hz, 5% THD, 4

channels driven)

Load impedance ................... 4

Preout max output level ...... 2.0 V

Tone controls:

Bass

Frequency................ 100 Hz

Gain ........................... ±13dB

Mid

Frequency................ 1 kHz

Gain ........................... ±12 dB

Treble

Frequency................ 10 kHz

Gain ........................... ±12 dB

(4 to 8 allowable)

load, both

Maximum amount of memory

.............................................. 250 GB

Minimum amount of memory

.............................................. 256 MB

USB Class.............................. MSC (Mass Storage Class)

File system............................. FAT16, FAT32

MP3 decoding format ......... MPEG-1 & 2 Audio Layer 3

WMA decoding format ....... Ver. 7, 7.1, 8, 9, 10, 11 (2ch

audio)
(Windows Media Player)

WAV signal format ................ Linear PCM & MS ADPCM

(Non-compressed)

FM tuner

Frequency range................... 87.5 MHz to 108.0 MHz

Usable sensitivity.................. 11 dBf (0.7 μV/75

S/N: 30 dB)

Signal-to-noise ratio............ 72 dB (IEC -A network)

, mono,

AM tuner

Frequency range................... 531 kHz to 1 602 kHz (9 kHz)

530 kHz to 1 640 kHz (10

kHz)

Usable sensitivity.................. 25 μV (S/N: 20 dB)

Signal-to-noise ratio............. 62 dB (IEC-A network)

Infrared remote control

Wavelength............................. 940 nm ±50 nm

Output ..................................... typ; 12 mw/sr per Infrared

LED

Note

Specifications and the design are subject to mod­ifications without notice due to improvements.

CD player

System ..................................... Compact disc audio system

Usable discs .......................... Compact disc

Signal-to-noise ratio............. 94 dB (1 kHz) (IEC-A net-

work)

Number of channels ............ 2 (st ereo)

MP3 decoding format ......... MPEG-1 & 2 Audio Layer 3

WMA decoding format ....... Ver. 7, 7.1, 8, 9, 10, 11 (2ch

audio)

(Windows Media Player)

WAV signal format ................ Linear PCM & MS ADPCM

(Non-compressed)

USB

Specification .......................... USB 2.0 full speed

Supply current ....................... 500 mA

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2.2 DISC/CONTENT FORMAT

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2.3 PANEL FACILITIES

What ’s what

Head unit

d c 98

1 2 5 6 74

3

b a

1 SRC/OFF button

This unit is turned on by selecting a source.
Press to cycle through all the available
sources.

2

/LIST button

Press to display the disc title list, track title
list, folder list or file list.

3 MULTI-CONTROL

Turn to increase or decrease the volume.
Also used for controlling functions.

4 CLOCK button

Press to change to the clock display.

5 Disc loading slot

Insert a disc to play.

6

(eject) button

Press to eject a disc.

7 USB port

Use to connect a USB audio player/USB
memory.

• When connecting, open up the USB con­nector lid.

• Use a USB cable to connect the USB
audio player/USB memory to the USB
port. Since the USB audio player/USB
memory is projected forward from the
unit, it is dangerous to connect directly.
Pioneer CD-U50E USB cable is also avail­able. For details, consult your dealer.

8

(detach) button

Press to remove the front panel from the
head unit.

9 AUX input jack (3.5 mm stereo jack)

Use to connect an auxiliary device.

a 1 to 6 buttons

Press for preset tuning. Also used for con­trolling functions.

• 1/S.Rtrvcan be used to control S.RTRV
(sound retriever).

• 2/PAUSEcan be used to control PAUSE
(pause).

• 5/

can be used to control RANDOM

(random).

• 6/

can be used to control REPEAT (re-

peat).

b

/ / / buttons
Press to perform manual seek tuning, fast
forward, reverse and track search controls.
Also used for controlling functions.

• When operating menus

— Pressing

is the same function as

turning MULTI-CONTROL right.

— Pressing

is the same function as

turning MULTI-CONTROL left.

— Pressing

is the same function as

pressing DISP/BACK/SCRL.

— Pressing and holding

is the same
function as pressing and holding
DISP/BACK/SCRL .

— Pressing d is the same function as

pressing MULTI-CONTROL.

— Pressing and holding d is the same

function as pressing and holding
MULTI-CONTROL .

• When operating lists
— Pressing

is the same function as

turning MULTI-CONTROL left.

— Pressing

is the same function as

turning MULTI-CONTROL right.

— Pressing

is the same function as

pressing DISP/BACK/SCRL .

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4

— Pressing and holding is the same

function as pressing and holding
DISP/BACK/SCRL .

— Pressing d is the same function as

pressing MULTI-CONTROL .

— Pressing and holding

is the same
function as pressing and holding
MULTI-CONTROL .

c DISP/BACK/SCRL button

Press to select different displays.
Press and hold to scroll through the text in­formation.
Press to return to the previous display when
operating the menu.
Press and hold to return to the main menu
when operating the menu.

d BAND/ESC button

Press to select among three FM bands and
one AM band.
Press to return to the ordinary display when
operating the menu.

g AUDIO button

Press to select an audio function.

h

button

Press to turn pause on or off.

i FUNCTION button

Press to select functions.
Press and hold to recall the initial setting
menu when the sources are off.

j LIST/ENTER button

Press to display the disc title list, track
title list, folder list or file list depending
on the source.
While in the operating menu, press to con­trol functions.

Display indication

12

3

Remote control

Operation is the same as when using the but­tons on the head unit.

e

d

j

f
b
gi

1

c

h

e VOLUME buttons

Press to increase or decrease the volume.

f MUTE button

Press to turn off the sound. To turn on the
sound, press again.

5

7

9 abc d

1 (disc) indicator

Appears when the disc (album) name is dis­played on the main display section.

2

(artist) indicator

Appears when the disc (track) artist name is
displayed on the main display section.

3 Main display section

Displays band, frequency, elapsed playback
time and other settings.

• Tuner
Band and frequency are displayed.

• Built-in CD player and USB
Elapsed playback time and literal infor­mation are displayed.

4

(song) indicator

Appears when the track (song) name is dis­played on the main display section.

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Also, appears when a playable audio file is
selected while operating the list.

5

indicator

Appears when an upper tier of folder or
menu exists.

6

(folder) indicator

Appears when operating list function.

7

indicator

Appears when a lower tier of folder or menu
exists.

8 LOC indicator

Appears when local seek tuning is on.

9

LOUD (loudness) indicator

Appears when loudness is on.

a

(stereo) indicator

Appears when the selected frequency is
being broadcast in stereo.

b

(repeat) indicator

Shows when track repeat is turned on.
Also, shows when folder repeat is on.

c

(random) indicator

Shows when random play is on.

d

(Sound Retriever) indicator

Appears when Sound Retriever function is
on.

Fastening the front panel

If you do not plan to detach the front panel,
the front panel can be fastened with supplied
screw.

Screw

Screw Parts No.
DEH-20UB/XS/UC BPZ20P060FTC

DEH-2150UBG/XS/ES
DEH-2150UB/XS/ES XXX7020
DEH-2150UB/XU/CN5 (Service)

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Connect with RCA cables
(sold separately)

Rear output

This product

Antenna jack

Fuse (10 A)

Blue/white
Connect to system control terminal of the
power amp or auto-antenna relay control
terminal (max. 300 mA 12 V DC).

Yellow
Connect to the constant 12 V
supply terminal.

Red
Connect to terminal controlled
by ignition switch (12 V DC).

Black (chassis ground)
Connect to a clean, paint-free
metal location.

Power amp
(sold separately)

System remote control

Left Right

Perform these connections when using
the optional amplifier.

rekaepsraeRrekaepsraeR

White/black

Violet/black

Violet

With a 2 speaker system, do not connect
anything to the speaker leads that are not
connected to speakers.

rekaepstnorFrekaepstnorF

White

Gray/black

Gray

Green/black

Green

rekaepsraeRrekaepsraeR

W

ired remote input
Hard-wired remote control adaptor
can be connected (sold separately).

DEH-2150UBG/XS/ES
DEH-2150UB/XS/ES
DEH-2150UB/XU/CN5

2.4 CONNECTION DIAGRAM

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3. BASIC ITEMS FOR SERVICE

demrifnocebotmetIserudecorP.oN

1 Confirm whether the customer complain has

been solved.
If the customer complain occurs with the
specific media, use it for the operation check.

The customer complain must not be
reappeared.
Display, audio and operations must be
normal.

2 CD Play back a CD.

(Track search)

No malfunction on display, audio and
operation.

3 FM/AM tuner Check FM/AM tuner action.

(Seek, Preset)
Switch band to check both FM and AM.

Display, audio and operations must be
normal.

4 Check whether no disc is inside the product. The media used for the operating check must

be ejected.

retfaecnaraeppastinotridrosehctarcsoNkcehcecnaraeppA5

receiving it for service.

Item to be checked regarding audio

3.1 CHECK POINTS AFTER SERVICING

To keep the product quality after servicing, please confirm following check points.

See the table below for the items to be checked regarding audio:

Distortion
Noise

Volume too low
Volume too high
Volume fluctuating
Sound interrupted

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3.2 PCB LOCATIONS

CD Core Unit (S10.5COMP2-USB-C3)

C

Tuner Amp Unit

A

Keyboard Unit

B

A:DEH-20UB/XS/UC
B:DEH-2150UB/XS/ES
C:DEH-2150UBG/XS/ES
D:DEH-2150UB/XU/CN5
Unit Number : YWM5319(A)
Unit Number : YWM5322(B)
Unit Number : YWM5318(C)
Unit Number : YWM5400(D)
Unit Name : Tuner Amp Unit
Unit Number :
Unit Name : Keyboard Unit
Unit Number : CWX3679
Unit Name : CD Core Unit(S10.5COMP2-USB-C3)

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3.3 JIGS LIST

- Jigs List

Name

Test Disc
L.P.F.

Jig No.

TCD-782

Remarks

Checking the grating
Checking the grating (Two pieces)

Name

Jig

- Grease List

Name

Grease
Grease

Grease No.

GEM1024
GEM1045

Remarks

CD Mechanism Module
CD Mechanism Module

e

Before shipping out the product, be sure to clean the
following portions by using the prescribed cleaning
tools:

Portions to be cleaned Cleaning tools

CD pickup lenses Cleaning liquid : GEM1004

Cleaning paper : GED-008

m

3.4 CLEANING

No.

rease No.

emarks

emarks

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4. BLOCK DIAGRAM

PICKUP UNIT
(P10.5)(SERVICE)

CD CORE UNIT(S10.5COMP2-USB-C3)

C

BRST,BRXEN,BSRQ

CN701

Q101

M

LD

MD

S903

DSCSNS

SPINDLE

MOTOR

M

LOADING/CARRIAGE

MOTOR

LD-

MD

15

5

HOLOGRAM

UNIT

IC301

BA5839FP

IC201

PE5666A

RF AMP, CD DECODER, MP3&WMA DECODER

DIGITAL SERVO/DATA•PROCESSOR

CPU, USB HOST CONTROLLER

ACTUATOR/

MOTOR 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,E,F

SD,MD

S901

HOME

S904
12EJ

S905

8EJ

LD+

14

141

LD

142

PD

12EJ

CONT

CLCONT

HOME

8

9

20

41

VDD

1

VDD2

BDATA,BSCK

VDD

15

5

FOCUS ACT.

TRACKING ACT.

FOP
TOP

2
1

TOP

FOP

11

FOP

14

TOP

2
1

14

8EJ

7

DSCSNS

10

16

/RESET

8

/RESET

88

VREF

REFO

133

REFOUT

33

FOM

FOM

12

FOM

44

TOM

TOM

13

TOM

22

LOEJ

LOEJ

28

52

50

X201

XTAL

/XTAL

16.93MHz

VDSENS

11

VD

16

17

DP

DM

4

5

DM

DP

2

1

X205

48MHz

USBXTAL

/USBXTAL

VDD2

Q102

39

/PUEN

VCC

VDD2

IN2_L

IN1_L

2

IC

PM

ELECTRON

SOURCE

TUNL

1

CN401

1

2

CN651

TUNER AMP UNIT

VCK, VDT, VST

LOUT

A

SYS+B

ANTENNA

IFA

IFB

7

VDD3V

11

SWVDD3V

SW5V

6

5

BSENS

SYSPW

PWROFF

2

1

36

47

15

SWVDD

4

1

BRST,BRXEN,BSRQ,BDATA,BSCK

CDRST

12

4

3

RESET

16

FM/AM TUNER UNIT

ANT

SL-IN

REFA

REFB

LDET

SWVDD3V

DI

CK

CE1

DO

CE2

SLOUT

SL-IN

IFA

IFB

REFA

REFB

LDET

DI

CK

CE1

DO

CE2

SLOUT

CD-Lch

3

REGULATOR IC

IC911

BA49181-V12

B.UP

10

9

VDD3V

SYS+B

SWVDD

VDD

SW5V

SYS+B

BESNS

SW5VCONT

+B

IC501

BD9007F

USB5V

IC251

BD6538G

PVin

Vin

SW

EN

VIN

EN

FLG

+B.UP

VDDCONT

SYSPW

8

7

USB5V

VOUT

5

IC601(

PN502

SYSTEM

COMPU

DREG

85

SYNC

USBCTL

FLG

25

5

2

8

1

28

1

3

27

4

SWVDD3V

Q601

PLL_VDD

DVDD3

M-REGC

55

9

57

DVDD2

94

DVDD4

121

B.UP

5

Q991

18

19

Q992

VDCONT

126

CD VD

VD

B.UP

USBZ

USBF

ATT

ATT

TANK

ATT RF

LFP

LFPVCO

CF

IC1

MIX / IF / PLL

IC2

EEPROM

1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 2011

ANT

VCC

SLIN

IFOUTA

IFOUTB

DGND

REFINA

REFINB

LDET

VDD

DI

CK

CE1

DO

CE2

SLOUT

RFGND1

RFGND2

RFGND3

RFGND4

VDD

4.1 BLOCK DIAGRAM

18

DEH-20UB/XS/UC

5678

56

7

8

C

D

F

A

B

E

IN2_L

IN1_L

2

IC151

PML014A

ELECTRONIC VOLUME/

SOURCE SELECTOR

TUNL

1

7

Rear_L

B.UP

35

44

MUTE

21

23

3

5

FL−

VCC

VCC

FL+

RL−

RL+

FL−

FL+

RL−

RL+

BREM

ACC

GND

22

IC601(1/2)

PN5025B

AMP

IC301

PAL007C

Q931

MUTE

CN831

VCK, VDT, VST

Q201(1/2)

Q201(2/2)

B.UP

Q821

SYSTEM MICRO

COMPUTER

ASENSE

3

9

11

12

10

1

2

CN911

15

4

19

16

18

SOURCE

ROT1

ILM+B

DPDT

KYDT

SRC

33

111

ILMPW

2

DPDT

23

KYDT

24

CN351

RLIn

12

ROT1

17

ROT0

110

ROT0

Q822

20

DSENSE

VBUS

DSENS

34

13

12

D-

D+

ASENS

6

Front_L

FLIn

14

XOUT

XIN

82

X601

74.1MHz

81

BU_X1

BU_X2

52

X602

4.7186MHz

51

Q351

MUTE

20

6

25

B.REM

ASENS

RL

6

BSENS

SYSPW

PWROFF

36

47

15

SWVDD

1

CDRST

16

SL

62

SL-IN

IF_INA

77

IFA

IF_INB

78

IFB

FREFA

96

REFA

FREFB

97

REFB

LOCK

99

LDET

TUNDO

100

DI

TUNCK

101

CK

TUNDI

102

CE1

CE2

CE

103

DO

SL

109

CE2

136

SLOUT

KEYAD

KEYD

CN871

2

2

3

KEYAD

142

130

KEYD

B.UP

WIRED
REMOTE

RCA OUT

POWER
CONNECTOR

L_OUT

59

CD-Lch

B.UP

IC601(2/2)

PN5025B

SYSTEM MICRO

COMPUTER

4

STBY

B.UP

3

SW5V

14

USB5V

USBZ

USBF

AUX-G

6

AUX-L

7

AUX-L

4

AUX-G

5

IN4+_L

IN4-_L

ILMPW

DREG

85

SYNC

USBCTL

FLG

25

5

28

27

PLL_VDD

DVDD3

M-REGC

55

9

57

DVDD2

94

DVDD4

121

:DEH-20UB/XS/UC
:DEH-2150UB/XS/ES
:DEH-2150UBG/XS/ES
:DEH-2150UB/XU/CN5

MUTE

B.UP

VDCONT

126

A
B
C

D

B

C

D

DSEN

SOURCE

DPDT

KYDT

D-

D+

VBUS

D-

D+

VBUS

LCD DRIVER/

KEY CONTROLLER

IC1801

PD6340A

KEY DATA

KDT0-3

KST0-4

LCD1801

CN1801

CN1802

CN1803

FRONT
AUX

USB

KEYBOARD UNIT

18

14

18

20

DPDT

KYDT

B

12

13

SW5V

SW5V

19

X0

X1

22

X1801

5.00MHz

23

KEY MATRIX

S1829
S1830

S1831
S1832

CLOCK

S1827
S1828

S1811

S1833

SOURCE

S1802

6

S1815

S1813

DISP/BACK

S1819

UP

S1825
S1826

RIGH

S1817

S1823

S1803
S1834

S1805

S1807

10
56

VLCD
VDD

4

1

3

2

20

17

16

1

2

4

5

3

3

15

17

1

3

IC1802

GP1UXC14RK

REMOTE CONTROL

SENSOR

REM

S1801

CD EJECT

S1809

1

3

2

4

5

LIST

DOWN

LEFT

AUX L

7

AUX G

AUX L

AUX R

AUX G

ROT1

ROT0

KST1

KDT2

6

BAND/ESC

2

3

1

ILM+B

ILLUMI

D1824-D1832
D1834-D1840

LCDBK

D1823

DEH-20UB/XS/UC

19

1234

1234

C

D

F

A

B

E

SEGMENT

COMMON

LCD (CAW1970)

20

DEH-20UB/XS/UC

5678

56

7

8

C

D

F

A

B

E

VDD = 3.3 V

Pin 8

BSENS

Pin 36

ASENS

Pin 35

BSENS = L

Starts

communication

with Grille

microcomputer.

SWVDD <- H

Pin 1

Source keys

operative

Source ON

SYSPW <- H

Pin 15

300 ms

300 ms

Completes power-on operation.
(After that, proceed to each source operation)

In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300 msec, the oscillator
may be defective.

Power ON

ASENS = L

5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

DEH-20UB/XS/UC

21

1234

1234

C

D

F

A

B

E

5.2 ERROR CODE LIST

- Error Messages

If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of
the error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from
the users and also for facilitating trouble analysis and repair work in servicing.

(1) Basic Indication Method

1) When SERRORM is selected for the CSMOD (CD mode area for the system), error codes are written to DMIN
(minutes display area) and DSEC (seconds display area). The same data is written to DMIN and DSEC. DTNO
remains in blank as before.

2) Head unit display examples

Depending on display capability of LCD used, display will vary as shown below. xx contains the error number.

8-digit display 6-digit display 4-digit display

ERROR-xx ERR-xx E-xx

(2) Error Code List

Code Class Displayed error code Description of the code and potential cause(s)

10 Electricity Carriage Home NG CRG can't be moved to inner diameter.

SERVO LSI Com- CRG can't be moved from inner diameter.

munication Error -> Failure on home switch or CRG move mechanism.

Communication error between microcomputer and SERVO LSI.

11 Electricity Focus Servo NG Focusing not available.

-> Stains on rear side of disc or excessive vibrations on REWRITABLE.

12 Electricity Spindle Lock NG Spindle not locked. Sub-code is strange (not readable).

Subcode NG -> Failure on spindle, stains or damages on disc, or excessive vibrations.

A disc not containing CD-R data is found.

Turned over disc are found, though rarely.

CD signal error.

17 Electricity Setup NG AGC protection doesn't work. Focus can be easily lost.

-> Damages or stains on disc, or excessive vibrations on REWRITABLE.

30 Electricity Search Time Out Failed to reach target address.

-> CRG tracking error or damages on disc.

44 Electricity ALL Skip Skip setting for all track.

(CD-R/RW)

50

Mechanism

CD On Mech Error Mechanical error during CD ON.

-> Defective loading motor, mechanical lock and mechanical sensor.

A0 System Power Supply NG Power (VD) is ground faulted.

-> Failure on SW transistor or power supply (failure on connector).

Remarks: Mechanical errors are not displayed (because a CD is turned off in these errors).

Unreadable TOC does not constitute an error. An intended operation continues in this case.

Upper digits of an error code are subdivided as shown below:

1x: Setup relevant errors, 3x: Search relevant errors, Ax: Other errors.

22

DEH-20UB/XS/UC