PIONEER LX470, GM-9027ZT Service Manual

ORDER NO.

CRT2883

PUB. NO. CRT2883

AUDIO SYSTEM

POWER AMPLIFIER

Manufactured for TOYOTA
by PIONEER CORPORATION

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS LX470 U.S.A., CANADA August 2002 86280-60360 GM-9027ZT/UC

GM-9027ZT-91/UC

LEXUS LX470 Middle and Near East August 2002 86280-60330 GM-9027ZT/Q1

GM-9027ZT-91/Q1

LX470

2

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

- GM-9027ZT/UC

- GM-9027ZT/Q1

For details, refer to "Important symbols for good services".

- Supplementally model is identical to the original except for the addition of following items.

Part No.
Description GM-9027ZT-91/UC GM-9027ZT-91/Q1
Cover Not used CEG1045
Polyethylene Bag CEG1181 CEG1088
Protector CHP2329 Not used
Protector CHP2330 Not used
Carton CHG4144 CHG4865

Contain Box CHL4862 CHL4865

3

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

[ 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.

SAFETY INFORMATION

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.

NOTE:

- When diagnosing a product, take care of its heated portion.
Power IC (IC801,802,803)
Power Supply IC (IC901,902)
DSP IC (IC201,251)
Heat Sink
IC Holder

4

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

CONTENTS

SAFETY INFORMATION............................................3

1. SPECIFICATIONS .......................................................4

2. EXPLODED VIEWS AND PARTS LIST ......................6

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....8

4. PCB CONNECTION DIAGRAM................................16

5. ELECTRICAL PARTS LIST........................................24

6. ADJUSTMENT.........................................................29

7. GENERAL INFORMATION.......................................33

7.1 DIAGNOSIS .......................................................33

7.1.1 DISASSEMBLY .........................................33

7.1.2 CONNECTOR FUNCTION DESCRIPTION ......36

7.2 IC ........................................................................37

7.3 EXPLANATION...................................................38

7.3.1 OPERATIONAL FLOW CHART .................38

7.3.2 SYSTEM BLOCK DIAGRAM.....................40

8. OPERATIONS ...........................................................41

1. SPECIFICATIONS

Power source . . . . . . . . . . . . .13.2±0.1V(10.5-16.0V)

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

Backup current . . . . . . . . . . . .1.0mA or less

Dimensions(No Bracket) . . . .210mm(W)x60mm(H)x150mm(D)

Weight(GM-9027ZT/UC) . . . . .1.985kg

(GM-9027ZT/Q1) . . . . .2.086kg

Maximum output power . . . .24W or more(Front)

24W or more(Rear)
24W or more(Woofer)

5

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

6

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

2. EXPLODED VIEWS AND PARTS LIST

2.1 EXTERIOR

7

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

1 Screw BMZ30P200FMC
2 Screw(GM-9027ZT/UC) BMZ50P060FMC
3 Screw BSZ26P060FMC
4 Screw BSZ30P060FMC
5 Screw BSZ30P100FMC

6 Chassis CNA2142
7 Case CNB2563
8 Shield Case CNC8185
9 Shield Case CNC8186

10 Bracket(GM-9027ZT/UC) CNC8919

11 Bracket(GM-9027ZT/UC) CNC8920
12 Insulator CNM6145
13 Seal CNM6686
14 Cushion(GM-9027ZT/UC) CNM7009
15 Seal CNM7170

16 Seal CNM7305
17 Heat Sink CNR1566
18 DSP Unit CWM8480
19 Socket(CN102) CKS3632
20 Socket(CN101) CKS4241

21 Amp Unit CWM8481
22 Screw BPZ30P060FSN
23 Screw BSZ26P080FMC
24 Connector(CN902) CKM1308
25 Connector(CN901) CKM1310

26 Plug(CN906) CKS4240
27 Plug(CN905) CKS4242
28 Holder CNC8187
29 Bracket CNC8681
30 Sheet CNM7015

31 Bracket(GM-9027ZT/Q1) CND1093
32 Holder(GM-9027ZT/Q1) CND1355
33 IC(IC902) BA178M05T
34 IC(IC801) PAL006A
35 IC(IC802) PAL006A

36 IC(IC803) PAL006A
37 Screw(GM-9027ZT/Q1) BMZ50P060FMC
38 Cushion CNM7756

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.)

- EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

Mark No. Description Part No.

8

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

13

11

9

6

13

11

9

6

3

6

9

8

13

7

16

13

10

11

12

6

7

12

IC251

PD2061A

IC181

AK5351VF

IC261

AK4321VF

IC351

PM0017AM

IC101

IC131

S-80730ANDT

IC902

BA178M05T

IC901

NJM2930F08K

Q904

Q906

Q912

Q909

Q903

5V REGULATOR

8V REGULATOR

SYSTEM

POWER SWITCH

5V REGULATOR

AUDIO INPUT

BUFFER

INPUT

CONNECTOR

OUTPUT

CONNECTOR

IC501

NJM2068MD

IC903

M51957BFP

IC703

NJM2068MD

IC803

PAL006A

SUB WOOFER

POWER AMP

SUB WOOFER

OPE AMP

REAR

POWER AMP

FRONT

POWER AMP

FRONT-L

OPE AMP

REAR-L

OPE AMP

IC701

NJM2068MD

IC702

NJM2068MD

P

PEE

3

1

11

9

7

7
9

4

11

1

3

2

1

11

7
9

2

7

6

1
7

2

6

1

3

1

3

SYS4

BU

STBY1

BU1

BU1

BU

L901

B.U

WFL-

WFL+

IC802

PAL006A

IC801

PAL006A

RL-

RL+

FL+

FL-

CN901

L-

L+

TMUT

MUTE

(H/U MUT)

ACC

Q915

6

7

18

A/D

ACC1

ACC1

BU1

ASENS

BSENS

Q155

Q151

17

16

N-MU

NMUT

Q171

NAVIMUTE

79

RESET

1

RESET

9

2

SYSTEM CONTROLLER

SYSPW1

SYSPW1

SYS5SYSD5

1

18

17

2

SYSA5

AVDD

DVDD

16

3

SYS8

SYS8

Q161

SYSPW1

66

Q910

Q911

2

4

STBY1

4

25

25

25

Q801

Q802

Q803

PMUT

MUTEO

MUTO

1

MUTE

MUTIN

MUTI

Q175

31

SMUTEIN

Q913

PWSENS

65

MUTE
/STBY

MUTE

VDD5VDD5

VDD

P

PEE

11

8

PEE

21

NMUT1

NAVI/MUTE

ACC SENSE

BACK UP SENSE

SYSTEM MUTE

PEE

SYSP1

CN906

CN101

CN905

CN102

FS

FS

5

14

A

A

B

B

CN902

ELECTRONIC

VOLUME

IC401

NJM2068MD

Q401

MIC

MIC401

VR401

3

ASLIN2

76

1

ASLIN1

74

IC402

NJM2068MD

5

7

ASL

8

8

IC141

HA12187FP

BUS DRIVER

AVCIN

AVCOUT

AVCPW

22

23

20

2

1

8

7

15 4

DSP

DSP

10

12

XOUT

XIN

21

IC281

AK4321VF

IC291

AK4321VF

IC311

NJM2068MD

IC331

NJM2068MD

IC341

NJM2068MD

FRONT DAC

IC231

TC7WU04F

IC241

TC7W74FU

1

7

CRYSTAL

OSCILLATOR

REAR DAC

WOOFER DAC

FRONT LPF

REAR LPF

WOOFER LPF

16

8

3

18

1

5

17 15

19 18

16

15

8

8

3

18

3

18

3

1

1

7

20

RLO

RLIN

22

FLO

FLIN

18

WFO

WFIN

(ML-)

(ML+)

17
19

(TWLP)

(TWLP)

(TWLM)

(TWLM)

(RLM)

(RLP)

(FLM)

(FLP)

AINL+

AINL-

SDATA

SDI1

SDO1

SDO0

SDO2

SDI0

SDI1

SDO1

SDO2

(FDATA)

(WDATA )

(RDATA )

VCC

8

VCC

8

3

1

2

2

3

5

5

5

(256FS)

CK

D

q

XTI

SDATA

AOUTL

XTI

SDATA

AOUTL

XTI

SDATA

AOUTL

IN1
IN3
IN5

OUT3

OUT1

OUT5

(FSW)

(FSW)

Q833

Q832

Q831

10

10

10

Q950

B

A

DSP UNIT

AMP UNIT

5

5

19

SDI0

Q291

68

DSPERR

17

AOUTR

6

SYS4

6

SYS4

6

SYS4

22

PMUT

STBY1

STBY1

22

PMUT

22

PMUT

Q101

(ASL1)

(ASL2)

SPD

(SPD)

C

(SPD)

C

Q907

10

9

SPD1SPD1

SPEED SENSOR PULSE

15

SPEED

BU

IC201

PD2061A

6 TXH TXP1

TX+

OFFSET SENSE

PD5791B

9

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A-aA-a A-b A-b

A-aA-a

A-b A-b

A-b A-b

A-a 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".

A-a

A

B

A

DSP UNIT

B

AMP UNIT

P

POWER AMP

-20.2dBs

-14.3dBs

10

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

3.2 SCHEMATIC DIAGRAM (GUIDE PAGE)

11

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A-b

A B

Decimal points for resistor
and capacitor fixed values
are expressed as :

2.2 2R2

0.022 R022

←

←

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.

PD5791B

-11.8dBs

-27.9dBs

-20.7dBs

-15.7dBs

+11.7dBs

CD 1kHz -20dB PLAY
(VOL:MAX, TONE:FLAT)

12

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

A-a

A-b
A-a

A-a

A-b

1

2 3

A

DSP UNIT

PD579

13

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A-a

A-b
A-a

A-a

A-b

4

5 6

7

B

AMP UNIT

POWER AMP

-20.2dBs

-14.3dBs

14

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

A-a

A-b

A-b

1

2 3

-27.9dBs

-20.7dBs

-15.7dBs

15

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A-a

A-b

A-b

4

5 6

7

Decimal points for resistor

and capacitor fixed values

are expressed as :

2.2 2R2

0.022 R022

←

←

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.

-11.8dBs

+11.7dBs

CD 1kHz -20dB PLAY

(VOL:MAX, TONE:FLAT)

16

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

4. PCB CONNECTION DIAGRAM

4.1 DSP UNIT

Capacitor

Connector

P.C.Board

Chip Part

A

A

DSP UNIT

SIDE B

SIDE A

NOTE FOR PCB DIAGRAMS

1.The parts mounted on this PCB
include all necessary parts for
several destination.
For further information for
respective destinations, be sure
to check with the schematic dia­ gram.

2.Viewpoint of PCB diagrams

B

CN906

17

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A

SIDE A

FRONT

B

CN905

18

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

A

A

DSP UNIT

19

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

A

SIDE B

20

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

4.2 AMP UNIT

B

B

AMP UNIT

A

CN101

21

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

B

SIDE A

A

CN102

22

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

B

B

AMP UNIT

23

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

B

SIDE B

24

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

Unit Number : CWM8480
Unit Name : DSP Unit

MISCELLANEOUS

IC 101 IC PD5791B
IC 131 IC S-80730ANDT
IC 141 IC HA12187FP
IC 181 IC AK5351VF
IC 201 IC PD2061A

IC 231 IC TC7WU04F
IC 241 IC TC7W74FU
IC 251 IC PD2061A
IC 261 IC AK4321VF
IC 281 IC AK4321VF

IC 291 IC AK4321VF
IC 311 IC NJM2068MD
IC 331 IC NJM2068MD
IC 341 IC NJM2068MD
IC 351 IC PM0017AM

IC 401 IC NJM2068MD
IC 402 IC NJM2068MD
Q 101 Transistor DTA144EK
Q 151 Chip Transistor 2SC2712
Q 155 Chip Transistor 2SC2712

Q 161 Chip Transistor 2SC2712
Q 171 Transistor 2SA1162
Q 175 Transistor 2SA1162
Q 291 Transistor DTA124XK
Q 401 Chip Transistor 2SC2712

D 101 Diode DAN202K
D 151 Diode HZU8R2(B1)
D 155 Diode HZU8R2(B1)
D 301 Diode HZU4R3(B3)
D 401 Diode HZU4R3(B3)

D 402 Diode 1SS355
D 403 Diode 1SS355
D 404 Diode 1SS355
D 405 Diode 1SS355
D 406 Diode 1SS355

D 451 Diode RD2R7M(B2)
L 101 Inductor LCTB1R0K2125
L 141 Inductor CTF1305
L 142 Inductor CTF1305
L 181 Inductor LCTB1R0K2125

L 182 Inductor LCTB1R0K2125
L 183 Inductor LCTB1R0K2125
L 184 Inductor LCTB1R0K2125
L 185 Inductor LCTB4R7K2125
L 186 Inductor LCTB120K2125

L 201 Inductor LCTBR82K2125
L 231 Inductor LCTB1R0K2125
L 241 Inductor LCTB1R0K2125
L 251 Inductor LCTBR82K2125
L 261 Inductor LCTB1R0K2125

L 262 Inductor LCTB120K2125
L 281 Inductor LCTB1R0K2125
L 282 Inductor LCTB120K2125
L 291 Inductor LCTB1R0K2125
L 292 Inductor LCTB120K2125

L 293 Inductor LCTB1R0K2125
L 295 Inductor LCTB1R0K3216
L 296 Chip-Inductor LCTA2R2J3225
L 297 Chip-Inductor LCTA2R2J3225
L 301 Inductor LCTB1R0K2125

L 451 Inductor LCTB4R7K2125
X 101 Radiator 10.00MHz CSS1428
X 231 Ceramic Resonator 22.5792MHz CSS1512
VR 401 Semi-fixed 1kΩ(OB) CCP1393
MIC 401 Microphone CPM1011

RESISTORS

R 101 1kΩ CCN1120
R 103 RS1/10S473J
R 104 RS1/10S473J
R 105 RS1/10S103J
R 107 RS1/10S473J

R 108 RS1/10S102J
R 109 RS1/10S473J
R 111 RS1/10S102J
R 112 RS1/10S473J
R 113 RS1/10S473J

R 114 RS1/10S473J
R 115 RS1/10S472J
R 116 RS1/10S472J
R 117 RS1/10S103J
R 118 RS1/10S681J

R 119 47kΩ CCN1131
R 120 RS1/10S473J
R 122 RS1/4S271J
R 125 RS1/16S102J
R 126 RS1/16S102J

R 127 RS1/16S102J
R 128 RS1/16S102J
R 129 RS1/16S102J
R 130 RS1/16S102J
R 131 RS1/10S104J

R 132 RS1/16S102J
R 133 RS1/16S102J
R 134 RS1/16S102J
R 135 RS1/16S102J
R 141 RS1/10S102J

R 142 RS1/10S102J
R 144 RS1/10S473J
R 151 RS1/10S104J
R 152 RS1/10S473J
R 153 RS1/10S102J

5. ELECTRICAL PARTS LIST

NOTE:

- Parts whose parts numbers are omitted are subject to being not supplied.

- The part numbers shown below indicate chip components.

Chip Resistor

RS1/_S___J,RS1/__S___J

Chip Capacitor (except for CQS.....)

CKS....., CCS....., CSZS.....

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

A

25

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

R 155 RS1/10S104J
R 156 RS1/10S473J
R 157 RS1/10S102J
R 161 RS1/10S362J
R 162 RS1/10S473J

R 171 RS1/10S912J
R 172 RS1/10S472J
R 173 RS1/10S102J
R 175 RS1/10S912J
R 176 RS1/10S472J

R 177 RS1/10S102J
R 181 RS1/10S331J
R 182 RS1/10S331J
R 183 RS1/10S331J
R 184 RS1/10S331J

R 185 RS1/10S221J
R 186 RS1/10S221J
R 187 RS1/10S221J
R 188 RS1/10S221J
R 201 RS1/10S221J

R 202 RS1/10S221J
R 203 RS1/10S221J
R 206 RS1/16S102J
R 207 RS1/16S102J
R 208 RS1/16S102J

R 231 RS1/10S680J
R 232 RS1/10S105J
R 233 RS1/10S471J
R 241 RS1/10S681J
R 252 RS1/10S221J

R 253 RS1/10S221J
R 261 RS1/10S102J
R 262 RS1/10S102J
R 281 RS1/10S102J
R 282 RS1/10S102J

R 291 RS1/10S102J
R 292 RS1/10S102J
R 293 RS1/10S473J
R 295 RS1/10S2R2J
R 296 RS1/10S150J

R 301 RS1/10S391J
R 311 RS1/10S123J
R 312 RS1/10S123J
R 313 RS1/10S103J
R 314 RS1/10S103J

R 315 RS1/10S303J
R 316 RS1/10S303J
R 317 RS1/10S101J
R 318 RS1/10S101J
R 331 RS1/10S123J

R 332 RS1/10S123J
R 333 RS1/10S103J
R 334 RS1/10S103J
R 335 RS1/10S243J
R 336 RS1/10S243J

R 337 RS1/10S101J
R 338 RS1/10S101J
R 341 RS1/10S562J
R 343 RS1/10S682J
R 345 RS1/10S153J

R 347 RS1/10S101J
R 401 RS1/10S222J
R 402 RS1/10S683J
R 403 RS1/10S103J
R 404 RS1/10S472J

R 405 RS1/10S471J
R 406 RS1/10S391J
R 407 RS1/10S684J
R 408 RS1/10S682J
R 409 RS1/10S472J

R 410 RS1/10S472J
R 411 RS1/10S473J
R 412 RS1/10S153J
R 413 RS1/10S153J
R 414 RS1/10S102J

R 415 RN1/10SE1003D
R 416 RN1/10SE1003D
R 417 RS1/10S1800D
R 418 RS1/10S562J
R 419 RN1/10SE1002D

R 420 RN1/10SE2002D
R 421 RS1/10S102J
R 422 RN1/10SE1003D
R 423 RN1/10SE1003D
R 425 RS1/10S472J

R 451 RS1/10S473J
R 452 RS1/10S473J
R 453 RS1/10S473J
R 454 RS1/10S473J
R 455 RS1/10S102J

CAPACITORS

C 101 CEJA100M16
C 102 CEJA100M16
C 103 CKSQYB103K50
C 104 CKSQYB102K50
C 105 CKSQYB102K50

C 106 CKSQYB102K50
C 107 CKSQYB102K50
C 121 CKSQYB103K50
C 122 CKSQYB103K50
C 131 CKSQYB103K50

C 141 CKSQYB103K50
C 181 CKSQYB152K50
C 182 CKSQYB152K50
C 183 CEJA101M10
C 184 CKSQYB104K25

C 185 CEJA100M16
C 186 CKSQYB104K25
C 187 CEJA101M10
C 188 CKSQYB104K25
C 189 CKSQYB104K25

C 191 CCSQCH101J50
C 192 CCSQCH101J50
C 193 CCSQCH101J50
C 194 CCSQCH101J50
C 195 CEJANP100M10

C 196 CEJANP100M10
C 197 CEJANP100M10
C 198 CEJANP100M10
C 201 CEJA100M16
C 202 CEJA100M16

C 203 CKSQYB103K50
C 204 CKSQYB102K50
C 231 CEJA100M16
C 232 CEJA100M16
C 233 CKSQYB103K50

C 241 CKSQYB103K50
C 242 CKSQYB103K50
C 243 CKSQYB102K50
C 251 CEJA100M16
C 252 CEJA100M16

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

26

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

C 253 CKSQYB103K50
C 261 CKSQYB104K25
C 262 CEJA101M10
C 263 CEJA221M6R3
C 264 CKSQYB104K25

C 265 CKSQYB392K50
C 266 CKSQYB392K50
C 267 CEJA221M6R3
C 268 CKSQYB104K25
C 269 CKSQYB104K25

C 281 CKSQYB104K25
C 282 CEJA101M10
C 283 CEJA221M6R3
C 284 CKSQYB104K25
C 285 CKSQYB472K50

C 286 CKSQYB472K50
C 287 CEJA221M6R3
C 288 CKSQYB104K25
C 289 CKSQYB104K25
C 291 CKSQYB104K25

C 292 CEJA101M10
C 293 CEJA221M6R3
C 294 CKSQYB104K25
C 295 CKSQYB332K50
C 297 CEJA221M6R3

C 298 CKSQYB104K25
C 299 CKSQYB104K25
C 301 CEJA101M10
C 302 CKSQYB102K50
C 303 CKSQYB103K50

C 306 CKSQYB103K50
C 307 CKSQYB103K50
C 308 CKSQYB103K50
C 309 CKSQYB103K50
C 311 CEJANP100M10

C 312 CEJANP100M10
C 313 CKSQYB102K50
C 314 CKSQYB102K50
C 315 CCSQCH101J50
C 316 CCSQCH101J50

C 317 CKSQYB103K50
C 331 CEJANP100M10
C 332 CEJANP100M10
C 333 CKSQYB102K50
C 334 CKSQYB102K50

C 335 CCSQCH101J50
C 336 CCSQCH101J50
C 337 CKSQYB103K50
C 341 CEJANP100M10
C 343 CKSQYB823K25

C 345 CKSQYB183K50
C 347 CKSQYB103K50
C 351 CKSYB105K16
C 352 CKSYB105K16
C 353 CKSYB105K16

C 354 CKSYB105K16
C 355 CKSYB105K16
C 357 CEJA100M16
C 358 CKSQYB104K25
C 359 CEJA100M16

C 360 CKSQYB104K25
C 361 CEJANP1R0M50
C 362 CEJANP1R0M50
C 363 CEJANP1R0M50
C 364 CEJANP1R0M50

C 365 CEJANP1R0M50
C 391 CKSQYB102K50
C 392 CKSQYB102K50
C 393 CKSQYB102K50
C 394 CKSQYB102K50

C 395 CKSQYB102K50
C 401 CEAT470M10
C 402 CEAT470M10
C 403 0.68µF/50V CCH1386
C 404 CEAT100M50

C 405 CEAT470M10
C 406 CCSQCH101J50
C 407 CEAT470M10
C 408 CEAT100M50
C 409 CKSQYB683K25

C 410 CEANP220M10
C 411 CKSQYB823K25
C 412 CEANP100M16
C 413 CEANP100M16
C 414 CKSQYB103K50

C 415 CEANP100M16
C 451 CEJA221M6R3
C 452 CEJA221M6R3
C 453 CKSQYB104K25

Unit Number : CWM8481
Unit Name : Amp Unit

MISCELLANEOUS

IC 501 IC NJM2068MD
IC 502 IC NJM2068MD
IC 701 IC NJM2068MD
IC 702 IC NJM2068MD
IC 703 IC NJM2068MD

IC 801 IC PAL006A
IC 802 IC PAL006A
IC 803 IC PAL006A
IC 901 IC NJM2930F08K
IC 902 IC BA178M05T

IC 903 IC M51957BFP
Q 801 Transistor DTA124EK
Q 802 Transistor DTA124EK
Q 803 Transistor DTA124EK
Q 831 Chip Transistor 2SC2712

Q 832 Chip Transistor 2SC2712
Q 833 Chip Transistor 2SC2712
Q 903 Transistor 2SC3651
Q 904 Transistor 2SB1260
Q 906 Transistor 2SB1260

Q 907 Transistor 2SA1587
Q 909 Transistor DTC114EK
Q 910 Transistor DTA114EK
Q 911 Transistor 2SD1757K
Q 912 Transistor DTC114EK

Q 913 Transistor DTC144EK
Q 915 Transistor DTA114TK
Q 916 Transistor 2SA1162
Q 950 Chip Transistor 2SC2712
D 901 Diode RM4LFJ10

D 902 Diode 1SS355
D 904 Diode 1SS355
D 905 Diode ERA15-02VH
D 906 Diode UDZS5R6(B)
D 907 Diode HZU4R3(B3)

D 909 Diode MA152WK
D 910 Diode 1SS355
D 911 Diode MA152WK
D 916 Diode UDZS18(B)
D 917 Diode UDZS18(B)

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

B

27

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

D 950 Diode UDZS7R5(B)
L 901 Choke Coil 260mH CTH1240

RESISTORS

R 501 RS1/10S103J
R 502 RS1/10S103J
R 503 RS1/10S103J
R 504 RS1/10S103J
R 505 RS1/10S472J

R 506 RS1/10S472J
R 507 RS1/10S472J
R 508 RS1/10S472J
R 509 RS1/10S822J
R 510 RS1/10S822J

R 511 RS1/10S822J
R 512 RS1/10S822J
R 517 RS1/10S153J
R 518 RS1/10S153J
R 519 RS1/10S153J

R 520 RS1/10S153J
R 521 RS1/10S101J
R 522 RS1/10S101J
R 523 RS1/10S101J
R 524 RS1/10S101J

R 701 RS1/10S223J
R 702 RS1/10S223J
R 703 RS1/10S223J
R 704 RS1/10S223J
R 705 RS1/10S303J

R 706 RS1/10S303J
R 707 RS1/10S223J
R 708 RS1/10S223J
R 709 RS1/10S123J
R 710 RS1/10S123J

R 711 RS1/10S222J
R 712 RS1/10S222J
R 713 RS1/10S273J
R 714 RS1/10S223J
R 717 RS1/10S0R0J

R 718 RS1/10S0R0J
R 719 RS1/10S221J
R 721 RS1/10S474J
R 722 RS1/10S474J
R 723 RS1/10S101J

R 724 RS1/10S101J
R 725 RS1/10S101J
R 726 RS1/10S101J
R 727 RS1/10S101J
R 731 RS1/10S562J

R 732 RS1/10S562J
R 733 RS1/10S272J
R 734 RS1/10S272J
R 735 RS1/10S222J
R 736 RS1/10S473J

R 801 RS1/10S184J
R 802 RS1/10S184J
R 803 RS1/10S184J
R 831 RS1/10S271J
R 832 RS1/10S271J

R 833 RS1/10S271J
R 834 RS1/10S472J
R 835 RS1/10S472J
R 836 RS1/10S472J
R 901 RS1/10S472J

R 902 RS1/8S222J
R 907 RS1/10S153J
R 908 RS1/10S6R8J
R 909 RS1/10S103J
R 910 RS1/10S181J

R 911 RS1/10S103J
R 912 RS1/10S391J
R 914 RS1/10S221J
R 916 RS1/8S121J
R 917 RS1/8S151J

R 918 RS1/8S222J
R 919 RS1/8S222J
R 921 RS1/10S474J
R 924 RS1/10S471J
R 928 RN1/10SE1102D

R 929 RN1/10SE1801D
R 930 RS1/10S222J
R 931 RS1/10S103J
R 932 RS1/10S333J
R 933 RS1/10S333J

R 934 RS1/10S272J
R 935 RS1/10S183J
R 936 RS1/10S103J
R 937 RS1/4S101J
R 938 RS1/4S101J

R 939 RS1/10S432J
R 940 RS1/10S512J
R 950 RS1/8S272J
R 951 RS1/10S182J
R 952 RS1/10S183J

CAPACITORS

C 501 CEAS4R7M50
C 502 CEAS4R7M50
C 503 CEAS4R7M50
C 504 CEAS4R7M50
C 505 CCSQCH101J50

C 506 CCSQCH101J50
C 507 CCSQCH101J50
C 508 CCSQCH101J50
C 509 CKSQYB473K25
C 510 CKSQYB473K25

C 701 CCSQCH101J50
C 702 CCSQCH101J50
C 703 CKSQYB471K50
C 704 CKSQYB471K50
C 705 CKSQYB222K50

C 706 CKSQYB473K25
C 707 CKSQYB224K16
C 708 CKSQYB473K25
C 709 CKSQYB473K25
C 710 CKSQYB473K25

C 801 CFTNA224J50
C 802 CFTNA224J50
C 803 CFTNA224J50
C 804 CFTNA224J50
C 805 CFTNA224J50

C 806 CFTNA224J50
C 807 CFTNA224J50
C 808 CFTNA224J50
C 809 CFTNA224J50
C 810 CFTNA224J50

C 811 CFTNA224J50
C 812 CFTNA224J50
C 813 CFTNA105J50
C 814 CFTNA105J50
C 815 CFTNA105J50

C 816 CEAS100M50
C 817 CEAS100M50
C 818 CEAS100M50
C 822 CEHAQ221M16
C 823 CKSQYB104K25

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

28

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

C 824 CEHAQ221M16
C 825 CKSQYB104K25
C 826 CEHAQ221M16
C 827 CKSQYB104K25
C 901 6800µF/16V CCH1390

C 902 CEAT1R0M50
C 903 CEAT471M25
C 904 CKSQYB473K25
C 905 CEAT221M10
C 906 CEAS1R0M50

C 907 100µF/10V CCH1282
C 908 100µF/10V CCH1282
C 909 CKSQYB473K25
C 910 CEAT221M10
C 911 CKSQYB473K25

C 912 CEHAQ1R0M50
C 913 100µF/10V CCH1282
C 914 CKSQYB473K25
C 915 CKSQYB103K50
C 916 CKSQYB103K50

C 917 CKSQYB473K25
C 918 CKSQYB224K25
C 919 CKSQYB473K25
C 920 CKSQYB103K50
C 921 CEAT1R0M50

C 922 CKSQYB473K25
C 923 CEAT4R7M50
C 924 CKSQYB471K50
C 925 CKSQYB104K25
C 928 CSZSR3R3M35

C 930 CKSQYB392K50
C 931 CKSQYB392K50
C 932 CKSQYB392K50
C 933 CKSQYB392K50
C 934 CKSQYB392K50

C 935 CKSQYB392K50
C 936 CKSQYB392K50
C 937 CKSQYB392K50
C 938 CKSQYB392K50
C 939 CKSQYB392K50

C 940 CKSQYB392K50
C 941 CKSQYB392K50
C 942 CKSQYB392K50
C 943 CKSQYB392K50
C 944 CKSQYB392K50

C 945 CKSQYB392K50
C 952 CKSQYB221K50
C 953 CKSQYB221K50
C 954 CKSQYB221K50
C 955 CKSQYB221K50

C 960 CKSQYB221K50
C 961 CKSQYB221K50

29

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

6. ADJUSTMENT

- Jigs

GGD1153
(14P)

GGD1245
(18P)

30

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

RSA Controller

24P

GGD1239

GGD1169

GGD1302

Bullet connector
(To DC Regulated Power Supply)

Bullet connector
SP Line

Bullet connector
(To DC Regulated Power Supply)

Bullet connector

(To DC Regulated Power Supply)

KEX-M9527ZT/UC

XDV-M8127ZT/UC

GM-9027ZT/UC

H/U

EMV(DENSO)

20P

12P20P

6P 10P 14P 8P

10P18P

20P 32P

18P 10P

6P 10P 14P12P20P

20P

25P

8P

16P

16P

20P

25P

GGD1240

AUI+AUI-

FR+ FR-

24P

AMP

MDVD

NAVI ECU(DENSO)

*MCD

*Please don't connect MCD and MVD at the same time.
*MCD or MDVD does not operate if RSA controller is not connected.

- Connection Diagram

31

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

Bullet connector
(To DC Regulated PowerSupply)

Bullet connector
SP Line

H/U

12P 20P20P

25P 16P

16P

GGD1169

20P

25P

GGD1240

FX-MG9527ZT/Q1

GM-9027ZT/Q1

AMP

- Connection Diagram

DSP UNIT

CN906

CN902

CN901

DC Regulated

Power Supply

13.2V

13.2V

AMP UNIT

0V

CN905

+B

WFL+ WFR+

GND

E

RL+ RR+

FL+

FR+

+B2

WFL-

WFR-

RL-

RR-

FL-

FR-

SPD

L+ R+

N-MU

TMUT

ASGD

ACC

L- R-

MUTE

CN902

CN901

13.2V

(MR+)

(MR-)

(ML+)

(ML-)

TXD+

TXD-

TX+

TX-

(SPD)

DSP UNIT

(TX+)

(TX-)

Side A

(MUTE)

Side A

Side B

13.2V

+

-

VR401

MIC401

ASL1

MIC

Audio analyzer

32

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

6.1 ASL SECTION ADJUSTMENT

Preset conditions

1. Set VR401 around the center of the adjustable range.

Input Output Adjustment
(MIC) (Pin 74 : test point "ASL1") Adj.point Spec.
By using the jig(CAN-906,CAN-912), Observe the output at VR401 100dBSPL
apply a sine wave of 100dBSPL ALS1 on a audio analyzer 314±28mV
voltage directly to the MIC terminal. (Corresponding to analog
(Close up as much as possible.) meter 7Hz).

To connect the Amp unit and the DSP unit, use Jig GGD1153 and GGD1245.

Caution:

1) Before starting measurement, be sure to perform the initial check for the ASL adjustment jig. (The sound pressure
level should be 100dBSPL at the sound emission section.)

2) Note that it may take 20 seconds or more to obtain waveforms, in some cases. Do not switch off the jig soon after
starting measurement.

Conditions:

1) This adjustment is sensitive to external shocks or wind. During adjustment, keep away the product and jig from
them.

33

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 DISASSEMBLY

- Removing the Shield Case (Fig.1)

1

Remove the two screws and then remove
the Shield Case.

1

1

- Removing the DSP Uint (Fig.2)

1

Remove the five screws and then remove
the DSP Unit.

Shield Case

Fig.1

1

1

1 1

DSP Unit

1

Fig.2

34

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

- Removing the Amp Uint (Fig.3)

1

Remove the six screws.

2

Remove the two screws and then
remove the Heat Sink.

3

Remove the five screws and then remove
the Amp Unit.

Amp Unit

3

3

3

3 3

1

1

1 1

Heat Sink

1

1

22

Fig.3

35

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

- “Pawl bending and soldering” points of the pawls for securing the base plate of a shielded case (bot­tom case).

• The portion marked by is a point in which pawl bending and soldering are not performed. (Faulty pawl bending

point)

• The portion marked by is a point in which pawl bending and soldering are necessary.

DSP UNIT

36

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

7.1.2 CONNECTOR FUNCTION DESCRIPTION

A

B

+B

WFL+ WFR+

GND

E

RL+ RR+

FL+

FR+

+B2

WFL-

WFR-

RL-

RR-

FL-

FR-

SPD

L+ R+

N-MU

TMUT

ASGD

ACC

L- R-

MUTE

B

(MR+)

(MR-)

(ML+)

(ML-)

TXD+

TXD-

TX+

TX-

(SPD)

(TX+)

(TX-)

(MUTE)

A

A

B

- GM-9027ZT/UC

- GM-9027ZT/Q1

37

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

- Pin Functions (PD5791B)

Pin No. Pin Name I/O Format Function and Operation

1 MUTE O C Mute output
2 VCS2 O C SN761029 strobe output
3 VCS1 O C PM0017AM strobe output
4 VDT O C Data output for electronic volume
5 VCK O C Clock output for electronic volume
6 CVNSS Connect to VSS
7 MODEL0 I R handle /L handle select input
8 NC Not used

9 RESET I Reset input
10 XOUT O Crystal oscillating element connection pin
11 VSS GND
12 XIN I Crystal oscillating element connection pin
13 VCC 5V
14 NMI Connect to VCC
15 SPEED I Speed sensor pulse input
16 BSENS I Back up power sense input
17 ASENS I ACC power sense input
18 AVCINT I AVC-LAN data input
19 NC Not used
20 AVCPW O C AVC-LAN driver power supply output
21 PEE O C Beep tone output
22 AVCIN I AVC-LAN data input
23 AVCOUT O C AVC-LAN data output
24 DSPOUT O C DSPI/F serial data output
25 DSPIN I DSPI/F serial data input
26 DSPCK O C DSPI/F serial clock output
27 TESTIN I Test program start input
28 TSOUT O C Test serial data output
29 TSIN I Test serial data input
30 TSCK I Test serial clock input
31 SMUTEIN I System mute input

32-62 NC Not used

63 POS I POS disable terminal
64 CALIB O C Power IC control output
65 PWSENS I Power IC heat sense input
66 SYSPW1 O C System power output
67 DSPRST O C DSP hard reset output
68 DSPERR I DSP error detect input
69 DSPCS2 O C TC9332F chip select 2
70 DSPCS1 O C TC9332F chip select 1
71 DSPACK I DSP-IC ACK input
72 DSPCD O DSP command/data output
73 DPD O C AD/DAC calibration output
74 ASLIN1 I Difference of noise and signal input 1
75 AVSS VSS
76 ASLIN2 I Difference of noise and signal input 2
77 VREF I A/D converter reference voltage input
78 AVCC VCC
79 NAVMUTE I Navigation mute input
80 DSPMUTE O C DSP mute output

20

21

40

41

60

61

80

1

Format Meaning
C C MOS

*PD5791B

IC's marked by * are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.

7.2 IC

38

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

7.3 EXPLANATION

7.3.1 OPERATIONAL FLOW CHART

Reset Start---OFF ---Power ON

<<JUDGMENT>>
Test program check(Unit checker)

- Pin 27 HI/LOW input

Unit checker program

Pin 27 HI input

Pin 27 LOW input

<<JUDGMENT>>
Back up, ACC confirmation

- Pin 17 ACC/Pin 16 Back up

Micon oscillation stop
(Electronic power save)

Pin 17 HI input and Pin 16 HI input

• ACC/Back up ON

Main loop

<<JUDGMENT>>
Bus communication Normal/Error

<<JUDGMENT>>
System ON/OFF

- OFF status
=System ON waiting

• Power ON(Pin 66 H)

• Mute ON(Pin 1 H)

• BEEP output available

- ON status
=System OFF waiting

• Power ON(Pin 66 H)

• Mute OFF(Pin 1 L)

• BEEP output available

<<JUDGMENT>>
DSP error confirmation

• communication error:Serial IF

• processing error:Pin 68

<<JUDGMENT>>
ACC/Back up ON/OFF

START

| Hard ware reset cancel

Main loop

Error return

• DSP reset(Pin 9)
| About 1 second

Error(Communication error)
| Forcibly OFF

Pin 17 HI input

or

Pin 16 HI input

Normal(Main unit communication normal)

OFF

ON

Normal operation

DSP error

ACC ON/Back up ON

Pin 17 LOW input

or

Pin 16 LOW input

Pin 17 LOW input

and

Pin 16 LOW input

39

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

- DSP error check (Normal)

DSPCS1(Pin70)

DSPCS2(Pin69)

DSPCK(Pin26)

4mS interval
(Periodical communication)

DSPCS1

DSPCS2

DSPCK

- DSP error check ---Error continuation

DSPRST(Pin67)

About 1S interval

40

1

234

12

34

F

E

D

C

B

A

GM-9027ZT/UC

7.3.2 SYSTEM BLOCK DIAGRAM

REAR SEAT

AUDIO

OTHER MAKERS

AMPLIFIER

PIONEER or

OTHER MAKERS

SPEAKER

HEAD

PHONE

2DIN

HEAD UNIT

L/R

L/R L/R

AVC-LAN

AVC-LAN

+B, ACC

+B, ACC
AVC-LAN

(OPTION)

AMPLIFIER

PIONEER or

OTHER MAKERS

SPEAKER

RGB

L/R

L/R

AVC-LAN

+B, ACC

EMV

DVD-CH

OTHER

MAKERS

CD-CH

or

1DIN

HEAD UNIT

L/R

NTSC

+B, ACC
AVC-LAN

NAVI

ECU

OTHER

MAKERS

TV TUNER

OTHER

MAKERS

NTSC

COMP

41

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-9027ZT/UC

NAVI

ECU

AMPLIFIER

PIONEER or

OTHER MAKERS

SPEAKER

RGB

L/R

L/R

AVC-LAN(MAIN)

+B, ACC

+B, ACC
AVC-LAN(MAIN)
AVC-LAN(LOCAL)

EMV

DVD-CH

OTHER

MAKERS

REAR SEAT

AUDIO

CD-CH

or

OTHER

MAKERS

1DIN

HEAD UNIT

AVC-LAN(LOCAL)

L/R

L/R

HEAD

PHONE

OTHER

MAKERS

NTSC

AVC-LAN(LOCAL)

AMPLIFIER

PIONEER or

OTHER MAKERS

SPEAKER

RGB

L/R

L/R

AVC-LAN

+B, ACC

EMV

DVD-CH

OTHER

MAKERS

CD-CH

or

1DIN

HEAD UNIT

L/R

NTSC

+B, ACC
AVC-LAN

(OPTION)

(OPTION)

NAVI

ECU

OTHER

MAKERS

(OPTION)

8. OPERATIONS

There is no information to be shown in this chapter.

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 2002

K-ZZB. JULY 2002 Printed in Japan