Service Manual for PIONEER AVX-MG2027ZFUC

ORDER NO.

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2002

AVX-MG2027ZF/XN/UC

CRT2871

RECEIVER ASSY WITH NAVIGATION DISPLAY

AVX-MG2027ZF

XN/UC

RECEIVER ASSY WITH NAVIGATION DISPLAY

AVX-MG2127ZF

XN/UC

RECEIVER ASSY WITH NAVIGATION DISPLAY

AVX-MG2227ZF

XN/UC

RECEIVER ASSY WITH NAVIGATION DISPLAY

AVX-MG2327ZF

XN/UC

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

Model No.

Order No.

Mech.Module

Remarks

CX-951

CRT2872

G2

CD Mech. module:Circuit Description, Mech.Description, Disassembly

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

K-ZZD.SEPT. 2002.printed in Japan

FORD

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- CD Player Service Precautions

1. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the con-

nectors during power-on mode may damage the ICs inside the unit.

2. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate

treatment shorting-solder by referring to "the DISASSEMBLY" on page 116.

3. After replacing the pickup unit, be sure to check the grating. (See p.105.)

VEHICLE

PRODUCED

AFTER

OEM PARTS No.

ID No.

PIONEER MODEL No.

LINCOLN LS

November 2002

3W4T-18K931-A1

·····

AVX-MG2027ZF/XN/UC

LINCOLN TOWNCAR

December 2002

3W1T-18C985-AF

·····

AVX-MG2127ZF/XN/UC

LINCOLN NAVIGATOR

February 2003

3L7T-18C985-AD

·····

AVX-MG2227ZF/XN/UC

LINCOLN AVIATOR

October 2002

3C5T-18C985

·····

AVX-MG2327ZF/XN/UC

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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.

[ Important symbols for good services ]

In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.

When you find the procedures bearing any of the symbols, be sure to fulfill them:

2. Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.

In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,

proper cleaning should be performed to restore their performances.

5. Lubricants, glues, and replacement parts

Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying

glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the

prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed

ones should be used.

4. Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or

the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

1. Product safety

You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and

should keep the safety during servicing by following the safety instructions described in this manual.

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CONTENTS

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

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

2.1 EXTERIOR(1)(AVX-MG2027ZF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 EXTERIOR(1)(AVX-MG2127ZF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 EXTERIOR(1)(AVX-MG2227ZF,AVX-MG2327ZF). . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 EXTERIOR(2)(AVX-MG2027ZF,AVX-MG2127ZF). . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.5 EXTERIOR(2)(AVX-MG2227ZF,AVX-MG2327ZF). . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.6 CD MECHANISM UNIT(G2)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.7 CD MECHANISM UNIT(G2)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.1 BLOCK DIAGRAM(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2 BLOCK DIAGRAM(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3 OVERALL CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.4 TUNER AUDIO UNIT(GUIDE PAGE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.5 DSP UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.6 MODULE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.7 TUNER PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.8 CONNECTOR PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.9 PANEL PCB UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.10 KEYBOARD UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.11 CD MECHANISM MODULE(G2F)(GUIDE PAGE) . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4. PCB CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.1 TUNER AUDIO UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.2 MODULE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4.3 DSP UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4.4 TUNER PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.5 CONNECTOR PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

4.6 PANEL PCB UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

4.7 KEYBOARD UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

4.8 CONTROL UNIT(G2F). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.9 PCB UNIT(LED),PCB UNIT(SIDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

4.10 PCB UNIT(SIDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

4.11 PCB UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.12 PCB UNIT(M2 UNIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5. ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

6. ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

6.2 CD ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

6.3 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT . . . . . . . . . . . . . . . . 105

6.4 TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

6.5 ERROR CODE LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

6.6 MODULE UNIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

7.1 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

7.1.1 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

7.1.2 PCB LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

7.1.3 CONNECTOR FUNCTION DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

7.2 IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

7.3 EXPLANATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

7.3.1 OPERATIONAL FLOW CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

7.3.2 SYSTEM BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

7.4 NOTES ON SERVICING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

7.4.1 CLEANING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

7.4.2 FACTORY SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

8. OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

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1. SPECIFICATIONS

General

Power source . . . . . . 14.4V(10.5V-16.0V allowable) DC

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

Backup current. . . . . . . . . . . . . . . . . 3mA or less

Dimensions(AVX-MG2027ZF) .246(W) x112(H) x188(D)mm

(AVX-MG2127ZF) 191(W) x109(H) x185(D)mm

(AVX-MG2227ZF) 201(W) x109(H) x183(D)mm

(AVX-MG2327ZF) 201(W) x109(H) x183(D)mm

Weight . . . . . . . . . . . . . . . . . . . . . . . . . 2.7kg

CD player

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

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

Signal format. . . . . . . . . Sampling frequency : 44.1kHz

. . . . . . . . . . . . . . Number of quantization : 16;linear

S/N. . . . . . . . . . . . . . . . . . . . . . 75dB or more

Distortion . . . . . . . . . . . . . . . . . . . 0.1% or less

FM tuner

Frequency . . . . . . . . . . . . . 87.75, 87.9107.9 MHz

S/N. . . . . . . . . . . . . . . . . . . . . . 58dB or more

Distortion . . . . . . . . . . . . . . . . . . . 1.5% or less

IF interference . . . . . . . . . . . . . . . . 95dB or more

Image interference . . . . . . . . . . . . . . 45dB or more

Stereo Separation . . . . . . . . . . 25dB or more(400Hz)

AM tuner

Frequency . . . . . . . . . . . . . . . . . . 5301710 kHz

S/N 20dB usable sensibility . . . . . . . . . . 33dBµ ± 6dB

S/N. . . . . . . . . . . . . . . . . . . . 50dB +10dB, -6dB

Distortion . . . . . . . . . . . . . . . . . . . 1.0% or less

IF interference . . . . . . . . . . . . . . . . 75dB or more

Image interference . . . . . . . . . . . . . . 60dB or more

Display

Screen size/Aspect ratio . . . . . . . . . 6.5 inch wide/16:9

(effective display area) . . . . . . . . . . . 143.4 x 79.3 mm

Pixels . . . . . . . . . . . . . . . . . . 93,600(400 x 234)

Sub pixels . . . . . . . . . . . . . . .280,800(1200 x 234)

Type . . . . . . . . . . . . . . . . . . . TFT active matrix

Color system. . . . . . . . . . . . . . . NTSC compatible

PIONEER AVX-MG2027ZFUC Service Manual

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