Daewoo AKD-80C User manual

Service Manual
Car Audio
COMPACT DISC CHANGER
MODEL:AKD-80C
DAEWOO ELECTRONICS CO., LTD

DAEWOO
CONTENTS
- 1 -
GENERAL SPECIFICATIONS......................................................2
GENERAL....................................................................................3
DISASSEMBLY............................................................................7
DIAGRAMS...................................................................................................10
PARTS LIST.................................................................................................26
1.IDENTIFICATION OF PARTS...........................................................................3
2.INSTALLATION PARTS AND SUPPLIED MOUNTING HARDWARE...........3~4
3.INSTALLATION METHOD (HOW TO INSTALL THE UNIT)...............................5
4.INSTALLATION METHOD (HOW TO INSTALL THE VEHICLE)........................6
5.PREPARATIONS............................................................................................6
1.DISASSEMBLY..............................................................................................7
2.PICK-UP/MECHANISM/MAGAZINE ASSEMBLY...............................................8
3.IDENTIFICATION OF MAGAZINE.....................................................................9
1.SCHEMATIC DIAGRAM.................................................................................10
2.ELECTRICAL SPECIFICATION........................................................................11
3.MICOM PIN CONFIGURATION & DESCRIPTIONS.................................12~14
4.IC BLOCK DIAGRAM & TERMINAL VOLTAGE........................................15~23
5.PRINTED CIRCUIT BOARDS...................................................................24~25
ELECTRICAL PARTS LIST.....................................................................26~27

GENERAL SPECIFICATIONS
DAEWOO
Compact Disc Digital Audio System
Material : GAAIAS
Wavelength : 780nm
Emission Duration : Continuous
Laser Output Power : Less Than 44.6uW
5-20,000Hz + 1dB
Below Measurable Limit
90dB
Line Output (For changer Connector Only)
800mA (CD Play Back)
800mA (During Loading or Ejection a Disc)
-10
o
C to 55
o
C (14
o
F to 131
o
F)
Appro x 245 x 85 x174mm (W x H x D)
Not lncl. Projection Parts and Control
Approx. 2.3kg
12V DC Car Battery
(Negative Ground)
Disc Magazine (1)
Mounting Hardware(1Set)
Connecting Cable (1)
System
Laser Diode Properties
Frequency Response
Wow and Flutter
Signal-To Noise Ratio
Outputs
Current Drain
Operating Temperature
Dimensions
Weight
Power Requirement
Supplied Accessories
- 2 -
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
1. The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the
potential difference generated by the charged electrostatic load, etc. on clothing and the human
body.
2. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed
matter which is included in the repair parts.
3. The flexible board is easily damaged and should be handled with care.
CAUTION :
USE OF CONTROLS, ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED
HEREIN, MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY
QUALIFIED SERVICE PERSONNEL.

GENERAL
DAEWOO
1.IDENTIFICATION OF PARTS
2. INSTALLATION PARTS AND SUPPLIED MOUNTING HARDWARE
- 3 -

DAEWOO
HORIZONTAL POSITION INSTALLATION (WITH BRACKET STUD)
VERTICAL POSITION INSTALLATION
(WITH BRACKET STUD)
HORIZONTAL POSITION INSTALLATION
(WITHOUT BRACKET STUD)
SUSPENDED POSITION INSTALLATION
(WITH BRACKET STUD)
VERTICAL POSITION INSTALLATION
(WITHOUT BRACKET STUD)
- 4 -
Use the wing nut to hold in place the
installation bracket with bolt(M6 x 25) to the
installation bracket, which is attached to the
unit. Then affix the cushion rubber.
Holes with the “H” marks are to be used for
horizontal or suspending and “V” for vertical
installation.
1. Only the provided screws and brackets should be used during installation. Using
screws other than those specified will cause damage.
2. Before installation, check that there is no harness at the back when making a hole
on the dashboard.
Dangerous Installation

DAEWOO
3. INSTALLATION METHOD (HOW TO INSTALL THE UNIT)
- 5 -
REMOVE TRANSIT SCREW 3 EACH BEFORE INSTALLATION
PART BRACKET DASH(L TYPE) ADHERE TO THE UNIT
After Setting the installation selector levers both sides(left, right)
SETTING THE INSTALLATION SELECTOR LEVERS ADJUST FOR UNIT (PRIOR TO INSTALL)
HORIZONTAL VERTICAL DECLINING
After Select Mark Hole(1), (2), (3)
The unit fasten by the screw(M4 x 10)
After Select Mark Hole (4)
The unit fasten by the screw(M4 x10)
After Select Mark Hole (2)
The unit fasten by the screw(M4 x 10)

DAEWOO
4.INSTALLATION METHOD
(HOW TO INSTALL THE VEHICLE)
5.PREPARATIONS
- 6 -
Should be determined before the unit install under
carpet.
Adjust the installation bracket with bolts to suit the place
of installation.
1.Remove the floor carpet and decide on the place to
install.
2.Remove the separator of the cushion rubber that is
attached to the installation bracket with bolt and install
accordingly.
3.Align the unit with the bolts and secure it with the wing
nuts.
1.USAGE OF MAGAZINE (To load the discs)
Load the discs with the labels facing upwards, as
shown in the diagram.
2.TO LOAD THE MAGAZINE
Slide the sliding door to the right until it is completely
latched on.
Load the magazine in the direction as shown in the
diagram. push it in until is locked into the unit.
After the magazine has been loaded, close the sliding
door.
(If not close sliding door, Dirt or dust entering it will
cause damage)
3.TO REMOVE THE MAGAZINE
Open the sliding door and depress the eject button.
Remove the magazine when it has been ejected.
Close the sliding door.
Notes on handling the optical pick-up block or base unit
1.The laser diode in the optical pick-up block may suffer
electrostatic breakdown because of the potential
difference generated by the charged electrostatic
load,etc. on clothing and the human body.
2.During repair, pay attention to electrostatic breakdown
and also use the procedure in the printed matter which
is included in the repair parts.
3.The flexible board is easily damaged and should be
handled with care.
CAUTION:
USE OF CONTROLS, ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN, MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE
EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL.

DISASSEMBLY
DAEWOO
1. DISASSEMBLY
- 7 -
Size:A3

DAEWOO
2. PICK-UP/MECHANISM/MAGAZINE ASSEMBLY
- 8 -
Size:A3

DAEWOO
3. IDENTIFICATION OF MAGAZINE
- 9 -

DIAGRAMS
DAEWOO
1. SCHEMATIC DIAGRAM
- 10 -
Size:A3

DIAGRAMS
DAEWOO
2.ELECTRICAL SPECIFICATION
TEST DISC : SONY YEDS 18 TYPE 4 OR TCD-784
PLAY ABILITY TEST (25oC)
- 11 -
NO ITEM TEST
CONDITION UNIT NOMINAL LIMIT 1 2 REMARK
1
2
3
4
5
6
7
8
20Hz
100Hz dB
dB
dB
dB
dB
dB
V
mA
%
10KHz
20KHz
1KHz
-2.6
0.01
4dB
2dB
2dB
3dB
80dB
75dB
3dB
3dB
70dB
60dB
0.8 0.1
<5mA
0.3%
JIS A
FILTER
JIS A
FILTER
JIS A
FILTER
JIS A
FILTER
JIS A
FILTER
-0.3
-1.3
90
90
0.07
20dB
20dB
86
76
2.7
FREQUENCY RESPONSE
S/N RATIO
DYNAMIC RANGE
T.H.D
DE-EMPHASIS
CHANNEL SEPARATION
OUTPUT LEVEL (V)
BACK UP CURRENT(mA)
5KHz
16KHz
1KHz
10KHz
1KHz
L
R
L
R
ITEM
FINGER PRINTS
ECCENTRICITY DISC
VERTICAL DEVIATION DISC
SCRATCH DISC
INTERRUPTION DISC
TEST CONDITION
BLACK DOT
A-BEX TCD-721R
A-BEX TCD-725A
A-BEX TCD-725A
A-BEX TCD-725A
A-BEX TCD-713
A-BEX TCD-731R
LIMIT
600uM
700uM
600uM
65uM
210uM
1000uM
< +
< +
< +
< +
<
>
>
> +
> +
+
+
+

3. MICOM PIN CONFIGURATION & DESCRIPTIONS
DAEWOO
PIN CONFIGURATIONS (LC865016B-XXXX)
- 12 -

DAEWOO
PIN DESCRIPTION
- 13 -
PIN
No FUNCTION
D-GND
DATA
DATA
EJECT
D-GND
D-GND
TEST
ACC
STBY
D-GND
D-GND
TEST
SL +
OPTION
SLED MOTOR Control Pulse
SLED MOTOR Control Pulse
1
2
3
4
5
6
7
8
9
10
11
12
13
PIN
NAME
P70
P71
P72
P73
P30
P31
P32
P33
P34
P35
P36
P37
P40
I/O
I/O
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
SL -
14 P41 I/O
D-GND15 P42 I/O
PLAY MODE (L)
S-MUTE16 P43 I/O
A-MUTE17 P44 I/O
POWC18 P45 I/O
D-GND19 P46 I/O
D-GND20 P47 I/O
SUBQ DATA SYNC DETECTOR
FSEQ21 P50 I/O
FOCUS OK SIGNAL IN
DRF22 P51 I/O
VSS POWER PIN(-)
23 VSS
VDD/VPP POWER
PIN(+)
24 VDD/
VPP
IN SW
25 P20 I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
PULL UP (22K)
PULL UP (22K)
PULL UP (22K)
PULL UP (22K)
PULL UP (47K)
PULL UP (47K)
PULL UP (47K)
LOAD SW
26 P21
HOME SW
27 P22
M SW
28 P23
P24
29 P24
DOK
30 P25
DISK P
31 P26
LOAD P
32 P27

DAEWOO
- 14 -
PIN DESCRIPTION
PIN
No FUNCTION
SK
COIN
SQOUT
CQCK
RWC
WRQ
TEST
DO
XT1
XT2
VSS POWER PIN (-)
OPTION
41
42
43
44
45
46
47
48
49
50
51
52
PIN
NAME
P11
P12
P13
P14
P15
P16
P17
TEST1
XT1/
P74
XT2
VSS
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
RES REST PINRES I
I
O
CF1
53
CF1 I
CF2
54
CF2 O
CONNECT TO VS1(VDD)
VDD POWER PIN (+)
55
VDD
PULL-UP (10K)
56
P80
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
AD INPUT PORT
57
P81
58
P82
59
P83
60
P84
61
P85
62
P86
63
64 P87
I
I
I
I
I
I
I
I
PULL UP (10K)
I/O DI
P10
I/O LOAD
33 P00
I/O E-UP
34 P01
I/O E-DN
UNLOAD
35 P02
I/O D-GND
36
P04
I/O D-GND
37
P05
I/O XRST
38
P06
I/O CS
39
P07
40

4. IC BLOCK DIAGRAM & TERMINAL VOLTAGE
DAEWOO
IC 101(LA9240M) -RF+ASSP+AUDIO FILTER
- 15 -
1. PIN CONFIGURATION
2. BLOCK DIAGRAM

3. TERMINAL VOLTAGE & DESCRIPTION
DAEWOO
- 16 -
PIN
No
Pickup photodiode connection pin. Added to FIN1 pin to generate the RF signal, subtracted
from FIN1 pin to generate the FE signal.
1FIN2
Pickup photodiode connection pin.2 FIN1
SYMBOL CONTENTS
Pickup photodiode connection pin. Subtracted from F pin to generate the TE signal.3E
Pickup photodiode connection pin.4F
TE signal DC component input pin.5TB
Pin which connects the TE signal gain setting resistor between this pin and TE pin.6 TE
-
TE signal output pin.7TE
TES(Track Error Sense) comparator input pin. The TE signal is input through a band pass filter. 8 TESI
Shock detection input pin.9 SCI
Tracking gain time constant setting pin.10 TH
TA amplifier output pin.11 TA
Pin for configuring the tracking phase compensation constant between the TD and VR pins. 12 TD
-
Tracking phase compensation setting pin.13 TD
Tracking jump signal (kick pulse) amplitude setting pin.14 JP
Tracking control signal output pin.15 TO
Focusing control signal output pin.16 FD
Pin for configuring the focusing phase compensation constant between the FD and FA pin.
Pin for configuring the focusing phase compensation constant between the FD
-
and FA
-
pin.
Pin for configuring the focusing phase compensation constant between the FA and FE pin.
17 FD
-
18 FA
19 FA
-
FE signal output pin.20 FE
Pin which connects the FE signal gain setting resistor between this pin and FE pin.21 FE
-
Analog signal GND.22 AGND
CV+ and CV
-
pins input signal single-end output.23 SP
Spindle amplifier input.24 SPI
12-cm spindle mode gain setting resistor connection pin.25 SPG
Spindle phase compensation constant connection pin, along with the SPD pin.26 SP
Spindle control signal output pin.27 SPD
Sled phase compensation constant connection pin.28 SLEQ
Sled control signal output pin.29 SLD
Input pin for sled movement signal from microprocessor.30 SL
-
Input pin for sled movement signal from microprocessor.SL+ 31
Input pin for tracking jump signal from DSP.32 JP
Input pin for tracking jump signal from DSP.JP+
33
Input pin for tracking gain control signal from DSP. Gain is low when TGL is high.
Input pin for tracking off control signal from DSP. Tracking servo is off when TOFF is high.
34 TGL
35 TOFF
Output pin for TES signal to DSP.36 TES
The High Frequency Level is used to determine whether the main beam is positioned over a
bit or over the mirrored surface.
37 HFL
Sled servo off control input pin.38 SLOF
Input pin for CLV error signal from DSP.
Input pin for CLV error signal from DSP.
39 CV
-
40 CV+

DAEWOO
- 17 -
PIN
No
RF output pin.
41 RFSM
RF gain setting and EFM signal 3T compensation constant setting pin, along with the RFSM pin.
42 RFS
-
Slice Level Control is an output pin that controls the data slice level used by the DSP for the
RF wave form.
43 SLC
SYMBOL CONTENTS
Input pin used by DSP for controlling the data slice level.44 SLI
Digital system GND pin.45 DGND
Focus search smoothing capacitor output pin.46 FSC
Tracking balance control, EF balance adjustment variable range setting pin.47 TBC
No connection 48 NC
Disc defect detection output pin.49 DEF
Reference clock input pin. 4.23 MHz signal from the DSP is input.50 CLK
Microprocessor command clock input pin.51 CL
Microprocessor command data input pin.52 DAT
Microprocessor command chip enable input pin.53 CE
RF level detection output (Detect RF)54 DRF
Focus search select; focus search mode (+search/+search vs. the reference voltage)
switching pin
55 FSS
Servo system and digital system VCC pin.
By-pass capacitor connection pin for reference voltage.
Reference voltage output pin.
56 VCC2
VCC1
57 REFI
58 VR
Disc defect detection time constant setting pin.59 LF2
RF signal peak hold capacitor connection pin.
RF signal bottom hold capacitor connection pin.
60 PH1
61 BH1
APC circuit output pin.
APC circuit input pin.
62 LDD
63 LDS
RF system VCC pin.64

DAEWOO
- 18 -
IC 501 (LB 1836) - 2CH. Bidirectional Motor Driver IC
1. PIN CONFIGURATION
2. BLOCK DIAGRAM

DAEWOO
IC 201(LC 78626) - DSP for CDP
- 19 -
1. PIN CONFIGURATION 2. BLOCK DIAGRAM