AUDI CQ-EA1070, CQ-EA1071, CQ-EA1072, CQ-EA1073, CQ-EA1074 Service Manual

ORDER No. AED0109021

AUTOMOTIVE ELECTRONICS

AUDI CQ-EA1070L CQ-EA1071L CQ-EA1072L CQ-EA1073L CQ-EA1074L

AM/FM MPX ELECTRONIC TUNING RADIO with Stereo Cassette Tape Player and CD Changer

Specification*

General Power Supply DC 12V (11V - 16V),

Test Voltage 14.4V

Negative Ground Current Consumption Less than 2.5A (0.5W×4ch) Power Output 12W×2ch Speaker Impedance 4Ω

LW Radio Frequency Range 153 - 279kHz Usable Sensitivity 18dB/µV (S/N 20dB)

MW Radio Frequency Range 531 - 1,602kHz Usable Sensitivity 14dB/µV (S/N 20dB)

FM Stereo Radio Frequency Range 87.5 - 108.0MHz Usable Sensitivity 12dB/µV (S/N 30dB)

DESTINATION : Europe PRODUCED AFTER (CQ-EA1070L) : Oct., 2000 PRODUCED AFTER (CQ-EA1071L) : Jan., 2001 PRODUCED AFTER (CQ-EA1072L-74L) : Apr., 2001 [Note] See the next page about PART No. and VECLE.

Tape Player Signal to Noise Ratio 55dB (IHF-A) Wow and Fuluter Less than 0.3%

ICD Player Signal to Noise Ratio More than 60dB (IHF-A) Channel Separation More than 50dB (IHF-A)

Dimensions** 179(W)×110(H)×163(D)mm Weight** 3.1kg

* Specifications and the design are subject to possible modification without notice due to improvements.

** Dimensions and Weight shown are approximate. Dolby noise reduction manufactured under license from Dolby

Laboratories Licensing Corporation. “Dolby” and the double-D symbol

Laboratories Licensing Corporation.

are trade marks of Dolby

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

CONTENTS

Page Page

1 PART No. AND VEHICLE 2 2 FEATUERS 3 LASER PRODUCTS 4 FRONT VIEW AND FUNCTIONS 5 REAR VIEW AND CONNECTORS 6 WIRING CONNECTION 7 BLOCK DIAGRAM 8 TERMINALS DESCRIPTION 9 PACKAGE AND IC BLOCK DIAGRAM 10 CD DISC CENTERIN G ALIGNMENT 11 REPLACEM ENT PARTS LIST

12 EXPLODED VIEW (Unit) 24 13 CD CHANGER PARTS LIST

2 2

14 EXPLODE D VIEW (CD Deck-1)

15 EXPLODE D VIEW (CD Deck-2) 16 EXPLODE D VIEW (CD Deck-3)

3 4

17 TAPE PLAYER PARTS

18 EXPLODED VIEW (Tape Deck) 19 WIRING DIAGRAM

20 SCHEMAT IC DIAGRAM -1

21 SCHEMAT IC DIAGRAM -2

25 28 29 30 31 32 33 41 43

1 PART No. AND VEHICLE

[PART No.]

∙

(CQ-EA1070L) : 8E0 035 195

∙

(CQ-EA1071L) : 4D0 035 195H

∙

(CQ-EA1072L) : 4B0 035 195H

∙

(CQ-EA1073L) : 8L0 035 195H

∙

(CQ-EA1074L) : 8Z0 035 095H

[VEHICLE]

∙

(CQ-EA1070L) : AUDI A4

∙

(CQ-EA1071L) : AUDI A8

∙

(CQ-EA1072L) : AUDI A6

∙

(CQ-EA1073L) : AUDI A3

∙

(CQ-EA1074L) : AUDI A2

2 FEATUERS

∙

PLL (Phase Locked Loop) synthesized tuning.

∙

12-FM, 12-AM presets with preset scan

∙

Dolby noise reduction.

∙

NCD-8 CD player.

∙

CD Changer control.

3 LASER PRODUCTS

4 FRONT VIEW AND FUNCTIONS

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

5 REAR VIEW AND CONNECTORS

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

6 WIRING CONNECTION

7 BLOCK DIAGRAM

7.1. Main Block

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

7.2. Tuner / Display Block

7.3. AMP Block

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

7.4. CD Servo Block

8 TERMINALS DESCRIPTION

8.1. Main Block

IC701 : C2CBKA000001

No.

Port Descriptions I/O

1 /RSTOUT Not used - - - - 2 NMI (Connecting to GND) - 0 0 0 0 3 VSS GND - 0 0 0 0 4 VDD +5V power supply - 4.8 4.8 4.8 4.8 5 ILL1 Illumi control O 0 0 0 0 6 ILL2 Iiiumi. control O 2 2 1.2 1.2 7 TUNER1.ON Radio power on/off O 4.8 4.8 4.8 4.8 8 TUNER2.ON Radio power on/off O 4.8 4.8 4.8 4.8

9 LCD.ADR LCD address O 0 0 0 0 10 LCDRST LCD reset O 4.8 4.8 4.8 4.8 11 LCD.CS LCD selection O 0 0 0 0 12 LCD/E2.CLK LCD/SEC. data shift

13 LCD/E2.DT.INLCD/SEC. serial data O 0 0 0 0

14 E2.DT.OUT Security data I 0 0 0 0 15 E2.CS Security IC selection O 0 0 0 0 16 AUDIO.ON Audio power on/off O 4.8 4.8 4.8 4.8 17 VSS GND - 0 0 0 0 18 VDD +5V power supply - 4.8 4.8 4.8 4.8 19 I2C.DATA DSP/AF.SW data O 4.8 4.8 4.8 4.8 20 I2C.CLK Data shift clock O 4.8 4.8 4.8 4.8 21 F/E.DATA Tuner control data O 0 0 0 0 22 F/E.CLK Data shift clock O 0 0 0 0 23 F/E.STP Tuner control O 2.9 3.7 3.8 3.8 24 F/E.ENA Tuner pack enable O 0 0 0 0 25 VSS GND - 0 0 0 0 26 VDD +5V power supply - 4.8 4.8 4.8 4.8 27 FIELD.1 Field strength

28 N.C.1.1 Noise level detection I 0 0 0 0 29 PHOTO Photo sensor data I 1.2 0.8 1.9 1.6 30 MP.1 FM multipath

31 DEV.1 FM deviation I 0 2.3 2.3 2.3 32 ANT.V ANT1 current intensity I 0.5 0.5 0.5 0.5 33 IF.V ANT2 current intensity I 0 0 0 0 34 FIELD.2 Field strength

35 VA.REF +5V power suooly - 4.8 4.8 4.8 4.8 36 VA.GND GND - 0 0 0 0 37 NC.1.2 Noise level detection I 0 0 0 0 38 MP.2 FM multipath

39 6.1V DET +B level detection I 4.8 4.7 4.6 4.8 40 +B MONI. +B level detection I 2.9 2.8 2.7 2.8 41 VSS GND - 0 0 0 0 42 VDD +5V power supply - 4.8 4.8 4.8 4.8 43 BAT.DET +B level detection I 4.8 4.6 4.7 4.8 44 P.SW Power switch I 4.8 4.3 4.5 4.7 45 T.MUTE Tape mute O 4.8 4.6 4.6 4.8 46 T.LOAD Tape loading I 0 0 0 0 47 CD.A.MUT/C

D.SW1 48 STBY Power Amp stand-by O 4.8 4.8 4.8 4.8 49 LCD.MONI LCD I 4.8 4.3 4.4 4.7 50 RDS.CLK RDS data shift clock I 1.5 1.5 1.5 1.5 51 VSS GND - 0 0 0 0 52 VDD +5V power supply - 4.8 4.8 4.8 4.8 53 DAB.RX0 Not used - - - - 54 DAB.TX0 Not used - - - - 55 RDS2.CLK RDS data shift clock I 2.5 2.5 2.5 2.5 56 RDS2.DATA RDS data I 2.4 2.4 2.4 2.4 57 RDS.DATA RDS data I 1.1 1.1 1.1 1.1 58 PLL.DI PLL data O 0 0 0 0 59 PLL.DO PLL data I 2.5 0 0 0 60 PLLCLK PLL clock O 0 0 0 0 61 CDC.REMO CD CH remote data O 4.8 0 0.2 0

clock

detection

interference

detection

interference

CD start/stop O 0 0 0 0

(V)FM(V)AM(V)CD(V)

O 0 0 0 0

I 0.9 0.6 0.6 0.6

I 2.9 0 0 0

I 1.2 1.2 1.2 1.2

I 0 0 0 0

(v)

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

No.

100 AF.MUTE AF mute O 0 0 0 0 101 NC No connection - - - - 102 NC No connection - - - - 103 M2 Tape main motor control O 0 0 0 4.8 104 M2F Tape main motor control O 0 0 0 4.8 105 T.IN Tape detection I 0 0 0 4.8 106 F.IN Tape control O 0 0 0 0 107 EN.A Tape end detection I 0 0 0 0 108 KI.1 Key data I 0 0.6 0 0.7 109 KI.2 Key data I 1 0.7 0 0.7 110 KI.3 Key data I 1 0.7 0.7 0.7 111 VDD +5V power supply - 4.8 4.8 4.8 4.8 112 VSS GND - 0 0 0 0 113 KI.4 Key data I 1 0.7 0.7 0.7 114 R.IN Tape control O 0 0 0 0 115 CD.SIMO CD serial data O 0 0 0 0 116 CD STP/STA CD start/stop O 0 0 4.8 0 117 CD.SOMI CD serial data I 0 4.8 4.3 0 118 CD.SCKM CD data shift clock O 4.8 4.8 4.8 4.8 119 CD.ON CD power control O 4.8 4.8 4.8 4.8 120 CC.ON Tape power control O 4.8 0 0 4.8 121 VDD +5V power supply - 4.8 4.8 4.8 4.8 122 VSS GND - 0 0 0 0 123 XTAL2 Crystal oscillator - 2.2 2.2 2.2 2.2 124 XTAL1 Crystal osillator - 2.1 2.1 2.1 2.1 125 VSS GND - 0 0 0 0 126 XTAL3 Crystal oscillator - 1.2 1.2 1.2 1.2 127 XTAL4 Crystal oscillator - 2 2 2 2 128 /RSTIN Reset input I 4.7 4.7 4.7 4.7

Port Descriptions I/O

(V)FM(V)AM(V)CD(V) 62 CDC.DATA CD CH data I 4.8 4.8 4.8 4.8 63 KLIN.OUT K-LINE data O 4.8 0 4.8 4.8 64 KLIN.IN K-LINE data I 4.8 4.8 4.8 4.8 65 PLL.CE PLL chip enable O 0 0 0 0 66 CDC.CLK CD CH clock I 4.8 4.8 4.8 4.8 67 BOSE BOSE Amp connection I 4.8 4.6 4.8 4.6 68 VDD +5V power supply - 48 4.8 4.8 4.8 69 VSS GND - 0 0 0 0 70 N.CNTR NAVI. control I 4.8 4.6 4.7 4.6 71 EXT.AMP.ON Ext Amp power control O 0 4.8 4.8 4.8 72 CAN.N.ERR CAN-BUS error I 4.8 0 4.8 4.8 73 CAN.EN CAN-BUS driver enable O 0 4.8 0 0 74 CAN.STB BUS data strobe O 0 1.9 0 0 75 CAN.RX CAN-BUS data I 4.8 2.2 2.2 4.8 76 CAN.TX CAN-BUS data O 4.8 0 2.4 4.8 77 CD.RST CD reset O 4.8 4.8 4.8 4.5 78 VDD +5V power supply - 4.8 4.8 4.8 4.8 79 VSS GND - 0 0 0 0 80 /RD Not used - - - - 81 /WR/WRL Not used - - - - 82 /READY Not used - - - - 83 ALE Not used - - - - 84 /EA (+5V pull-up) - 4.8 4.8 4.8 4.8 85 MUTE Mute O 4.8 4.8 4.8 4.8 86 KO.0 Key scan O 0 0.8 0.8 0.8 87 KO.1 Key scan O 0 0.8 0.7 0.8 88 KO.2 Key scan O 0 0.8 0.7 0.8 89 KO.3 Key scan O 0 0.8 0.7 0.8 90 KO.4 Key scan O 0 0.8 0.7 0.8 91 BIT.1 Tape mode SW I 0 0 0 4.8 92 BIT.2 Tape mode SW I 0 0 0 4.8 93 VDD +5V power supply - 4.8 4.8 4.8 4.8 94 VSS GND - 0 0 0 0 95 BIT.3 Tape mode SW I 0 0 0 0 96 KI.0 Key data I 0 0 0 0 97 KO.5 Key scan O 0.7 0.8 0.7 0.8 98 EN.B Tape end detection I 0 0 0 0 99 A/B.IN Tape A/B side detection I 0 0 0 0

(v)

Note : Voltage measuerments are with respect to ground, with a voltmeter (internal resistance : 10M ohms).

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

8.2. CD Servo Block

IC201 : MN662783RPW

Pin No.

1 VDD +5V power supply - 5.0 2 D0 D-RAM data I/O 2.3 3 D1 D-RAM data I/O 1.8 4 /WE D-RAM data write O 4.9 5 /RAS D-RAM row address strobe O 3.4 6 D2 D-RAM data I/O 0.8 7 D3 D-RAM data I/O 0 8 /CAS0 D-RAM columun address strobe O 3.9

9 /CAS1 D-RAM columun address strobe O 0 10 A8 D-RAM address O 0.6 11 A7 D-RAM address O 1.1 12 A6 D-RAM address O 0.7 13 A5 D-RAM address O 0 14 A4 D-RAM address O 1.1 15 A9 D-RAM address O 0.4

16-18 A0 D-RAM address O 1.0

19 A3 D-RAM address O 0 20 VSS2 Ground - 0 21 VDD2 +5V power supply - 5.0

22,23 - Not used - -

24 TVD Traverse motor control O 2.5 25 PC Not used - 26 ECS Spindle motor control O 2.4 27 TRD Tracking coil drive O 2.5 28 FOD Focus coil drive O 2.4 29 FBAL Focus balance O 1.9 30 TBAL Tracking balance O 3.0 31 VREF Refence voltage I 2.5 32 FE Focus error I 2.5 33 TE Tracking error I 2.5 34 RFENV RF envelope I 2.5 35 OFT Off track signal I 0 36 /RFDET RF detecting signal I 0 37 BDO Drop-out signal I 0 38 LDON Laser on signal O 4.5 39 ARF RF signal I 2.5 40 IREF Reference current input I 1.2 41 DRF Bias for DSL I 2.4 42 DSLF Loop filter for DSL I/O 2.5 43 DSLF2 Loop filter for DSL I/O 2.2 44 PLLF Loop filter for PLL I/O 1.4 45 VCOF Not used - 46 AVDD2 +5V power supply - 5.0 47 AVSS2 Ground - 0 48 OUTL L channel output O 2.3 49 AVSS1 Ground - 0 50 OUTR R channel output O 2.3 51 AVDD1 +5V power supply - 4.7

52-54 - (Connecting to ground) - 0

55 FLAG Flag output O 0 56 FCLK Frame clock O 0

57-59 - Not used - -

60 TX Not used - 61 MCLK Clock for I/F command I 1.0 62 MDATA Date for I/F command I 3.1 63 MLD I/F command load I 5.0 64 BLKCK Subcode block clock O 0 65 SQCK Ext.clock for sub code-Q I 5.0 66 SUBQ Code for sub. code-Q O 3.8 67 DMUTE Mute input I 0 68 STAT Status signal O 5.0 69 /RST Reset input I 5.0 70 CSEL (Connecting to ground) - 0 71 PMCK Clock output O 2.5 72 SMCK Clock output O 2.5 73 SUBC Serial data of sub code O 0 74 SBCK Shift clock for SUBC I 0.6 75 /CLDCK Not used - 76 /TEST (Connecting to VDD) - 5.0

Port Descriptions I/O Vol.

(V)

Pin No.

77 X1 Crystal oscillator - 0.4 78 X2 Crystal oscillator - 3.2 79 VDD1 +5V power supply - 5.0 80 VSS1 Ground - 0

Port Descriptions I/O Vol.

IC301 : MN1873260AB4

Pin No.

1 VDD +5V power supply - 5.0 2 OSC2 Crystal oscillator - 2.2 3 OSC1 Crystal oscillator - 2.1 4 VSS Ground - 0 5 XI (Connecting to ground) - 0 6 XO Not used - 7 CM (Connecting to ground) - 0 8 VREFH Reference voltage I 5.0

9 SW13 Shuter SW I 4.9 10 SW12 Horizontal origin I 4.9 11 SW11 Clump SW I 0 12 SW10 Play SW I 0 13 SW4 Shuter SW I 4.9 14 SW3 Tray origin SW I 0 15 SW2 Inner SW I 4.8 16 SW1 Outer SW I 4.9 17 VREFL (Connecting to Ground) - 0 18 /RESET Reset input I 4.9 19 - (Ground pull-down) - 0 20 SCKM Clock for serial data I 5.0 21 SIM CD changer serial data I 1.3 22 SOM CD changer serial data O 4.3 23 SQCK Ext. clock for sub. code-Q O 5.0 24 SUBQ Code for sub. code-Q I 1.6 25 - Not used - 26 - (Ground pull-down) - 0 27 CD.ON CD changer start/stop I 5.0 28 - Not used - 29 BLKCK Sub. code block clock I 0 30 P.ON In operation CPU O 5.0 31 MUTE Mute output O 5.0 32 - (Ground pull-down) - 0 33 SENS Servo status O 0 34 CLVS Servo status O 5.0 35 FLOCK Focus servo lock O 0.2 36 TLOCK Tracking servo lock O 0 37 VMI Horizontal motor control O 2.5 38 HMI Vertical motor control O 0 39 HVMUTE H/V motor mute O 0

40-42 - (Ground pull-down) - 0

43 SW9 Disc-in (B) SW I 0 44 SW8 Disc-in (L) SW I 0 45 SW7 Disc-in (F) SW I 0 46 SW6 Disc push SW I 0 47 SW5 Tray hight SW I 4.5 48 BDO Drop-out signal I 0 49 DQSY Not used - 50 /RST Reset output O 5.0 51 STAT Status signal I 2.1 52 DMUTE Mute output O 0 53 XE Not used - 54 P.DOWN Power down signal O 0 55 - No connection - 56 MLD I/F command load O 5.0 57 MDATA Data for I/F command O 3.1 58 MCLK Clock for I/F command O 4.1 59 SPMT Spindle mute O 5.0 60 MUTE12 Focus/Tracking mute O 0 61 MUTE4 Loading motor mute O 4.8 62 LDOI Loading motor control I/O 2.5 63 TRV Forced traverse control I/O 2.4 64 SYNC Not used - -

Port Descriptions I/O Vol.

(V)

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

9 PACKAGE AND IC BLOCK DIAGRAM

9.1. Main Block

IC105 : YEAMLC72146T

PA101 : J3CCAB000001

PA102 : YEAU03SMX01

IC205, 382 : YEAMPC4570T1

ICIC281 : C1BA00000311

IC101, 103 : AN6564NST1

IC102, 104, 204 : C0ABCB000005

IC705 : YEAMS2922ADF

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

IC704 : MN1382QTX

IC715 : MN1382JP

IC710 : YEAMLB1930MT

IC706 : YEAM2951MT

IC707 : C1EB00000039

9.2. CD Servo Block

IC713 : C0EBM0000005

IC881 : C1EB00000042

IC601 : YEAMBA5971FP

IC101 : YEAMBA6354BF

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

IC202 : C3ABMB000010

IC501 : YEAMPC358G2T

IC401 : YEAMBA6792FY

IC603 : YEAMT4W53FUL

AUDI / CQ-EA1070L / CQ-EA1071L / CQ-EA1072L / CQ-EA1073L / CQ-EA1074L

10 CD DISC CENTERING ALIGNMENT

∙

This adjustment is for assuring that compact discs will be placed in the center of the turntable.

∙

Power Supply Voltage : 13.2V

∙

Test Disc : TCD-784M

1. Attach the adjusting screw to the upper chassis (See Figure 1.).

2. Insert the test CD (TCD-784M) into the disc No.1 position and play it.

3. After checking whether the disc is centered on the turntable, turn the adjusting screw unit it is in the center.

∙

Check that the disc is correctly centered.

∙

Check that the disc is securely clamped.

∙

Check that no abnormal noise is produced when clamping the disc.

[Directions of Turning the Adjusting Screw]

∙

CD stops before its proper position : Turn the screw counterclockwise.

∙

CD overruns : Turn the screw clockwise.

4. After the adjustment, lock the screw.

+ 32 hidden pages