Daewoo AMI-326LW/RW User manual

AMI-326LW/RW
AMI-726LW/RW
AMI-826LW/RW
for SEMP TSB

SAFETY PRECAUTIONS...............................................................................................2
ADJUSTMENTS..............................................................................................................4
EXPLODED VIEW AND PARTS LIST .........................................................................5
WIRING DIAGRAM ................................................................................................... 7/8
AMI-326LW/RW...............................................................................................................................................7
AMI-726LW/RW, 826LW/RW..........................................................................................................................8
BLOCK DIAGRAM .....................................................................................................9/10
AMI-326LW/RW...............................................................................................................................................9
AMI-726LW/RW, 826LW/RW.........................................................................................................................10
SCHEMATIC DIAGRAM ...............................................................................................11
MAIN............... ...................................................................................................................................11/12
AMI-326LW/RW...............................................................................................................................................11
AMI-726LW/RW, 826LW/RW.........................................................................................................................12
TUNER.................................................................................................................................................13
AMI-326LW/RW...............................................................................................................................................13
TAPE.....................................................................................................................................................14
AMI-326LW/RW...............................................................................................................................................14
CD .......................................................................................................................................................15/16
AMI-326LW/RW...............................................................................................................................................15
AMI-726LW/RW, 826LW/RW.........................................................................................................................16
CONTROL ...........................................................................................................................................17
PCB PATTERN LAYOUT ..............................................................................................18
ELECTRICAL PART LIST .............................................................................................22
AMI-326LW/RW...............................................................................................................................................22
AMI-726LW/RW, 826LW/RW..........................................................................................................................28
TableofContents
1
MINICOMPONENTSYSTEM
AMI-326LW/RW
AMI-726LW/RW
AMI-826LW/RW
for SEMP TSB

1.SafetyPrecautions
2
WARNING : TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION : TO REDUCE THE RISK IF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS
INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF UNINSULTED "DANGEROUS VOLTAGE"
WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE
SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK TO PERSONS.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE
(SERVICING) INSTRUCTIONS IN THE LITERATURE
ACCOMPANYING THE APPLIANCE.
CAUTION
TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC
PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET
UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE
EXPOSURE.
LASER SAFETY
THIS UNIT EMPLOYS A LASER. ONLY QUALIFIED SERVICE PERSONNEL
SHOULD REMOVE THE COVER OR ATTEMPT TO SERVICE THIS DEVICE
DUE TO POSSIBLE EYE INJURY.
CAUTION: USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES
OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE.
CAUTION : TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION : POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON-
DANTE DE LA PRISE ET POUSSER JUSQU'AU FOND.
Important Safety Instructions
- All the safety and operating instructions should be read before
the appliance is operated.
- The safety and operating instructions should be retained for
future reference.
- All warnings on the appliance and in the operating instructions
should be adhered to.
- All operating and use instructions should be followed.
1. Water and Moisture - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or near a swimming pool,
and the like.
2. Carts and Stands - The appliance
should be used only with a cart or
stand that is recommended by th
manufacturer.
3. An appliance and cart combination
should be moved with care. Quick
stops, excessive force, and uneven
surfaces may cause the appliance
and cart combination to overturn.
4. Wall or Ceiling Mounting - The appli-
ance should be mounted to a wall or
ceiling only as recommended by the manufacturer.
5. Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper
ventilation. For example, the appliance should not be situated
on a bed, sofa, rug, or similar surface that may block the
ventilation openings; or, placed in a built-in installation, such
as a bookcase or cabinet that may impede the flow of air
through the ventilation openings.
6. Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
7. Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.
8. Grounding or Polarization - The precautions that should be
taken so that the grounding or polarization means of an
appliance is not defeated.
9. Power - Cord Protection - Power-supply cords should be
routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular
attention to cords at plugs, convenience receptacles, and the
point where they exit from the appliance.
10.Protective Attachment Plug - If the appliance is equipped with
an attachment plug having overload protection. This is a
safety feature. See Instruction Manual for replacement or
resetting of protective device. If replacement of the plug is
required, be sure the service technician has used a
replacement plug specified by the manufacturer that has the
same overload protection as the original plug.
11.Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.
12.Power Lines - An outdoor antenna should be located away
from power lines.
CAUTION
RISK OF ELECTRIC SHOCKS
DO NOT OPEN
PORTABLE CART
Figure 2

1.SafetyPrecautions
3
13.Outdoor Antenna Grounding - If an outside antenna is
connected to the receiver be sure the antenna system is
grounded so as to provide some protection against voltage
surges and built-up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides information with
regard to proper grounding of the mast and supporting
structure, grounding of the lead-in wire to an antenna-dis
charge unit, size of grounding conductors,location of antenna-
discharge unit, connection to grounding electrodes and
requirements for the grounding electrode. See Figure 1.
14.Non-use Periods - The power cord of the appliance should be
unplugged from the outlet when left unused for a long period
of time.
15.Object and Liquid Entry - Care should be taken so that objects
do not fall and liquids are not spilled into the enclosure through
openings.
16.Damage Requiring Service - The appliance should be
serviced by qualified service personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure
damaged.
17.Servicing - The user should not attempt to service the
appliance beyond that described in the operating instructions.
All other servicing should be referred to qualified service
personnel.
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD
IN WIRE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA
GROUNDING
NEC - NATIONAL ELECTRICAL CODE

2.Adjustments
4
1. TAPE SECTION
Test Tape be used
HEAD ADJUSTMENT (AZIMUTH)
1. 10KHz test tape(example: MTT-114N) must be used for this adjustment.
2. Connect to VTVM or oscilloscope to the headphone jack or speaker terminal.
3. Press the play button.
4. Adjust the azimuth by using a screw driver to maintain the max. L&R output voltage.
5. Adjust tape A(1), tape B(2) respectively, Please secure the azimuth position by using locking paint.
RECORDING BIAS OSCILLATOR FREQUENCY ADJUSTMENT
1. Connect the frequency counter to TP603, GND.
2. Press the REC button.
3. Adjust L603 to obtain 80 KHz
± 500Hz
Tape Contents Use
MTT-111N 3 KHz Tape Speed Adjustment
MTT-114N 10 KHz Head Azimuth Adjustment
MTT-5511 Blank Record Frequency Property
VTVM
Scope
R-CH
L-CH
47 kohm
47 kohm
Input Level
Measurement
Point
Input Point
Output Level
Measurement
Point
TAPE ALIGNMENT CHART
Step Item Reference Value Test Tape Adjust Point Test Point Note FIG.
1Tape Speed
Adjustment
Normal
3,015~3,025Hz MTT-111N RV601 Line Out L/R
Channel
Line Out L/R
Channel
Confirm Wow & Flut-
ter is within 0.35% FIG.1
3,000~3,010Hz MTT-111N RV601 Line Out L/R
Channel
Confirm Tape Speed
of end position after
adjustment at tape
start position
FIG.1
High 5,820~6,180Hz MTT-111N - - - - - -
Confirm High speed
after normal speed
adjustment FIG.1
2Azimuth Adjustment Maximum Level
Phase:Within90∞MTT-114N Head Screw Line Out L/R
Channel FIG.2,3,4
3
Recording Bias Oscilla-
tor Frequency Adjust-
ment 80 KHz
±0.5 MTT-5511 L603 TP603,GND Adjust with frequency
counter connected. FIG.1
FIG. 1 : Tape Speed & Record Bias Oscillator
Frequency Adjust Circuit
Test Tape MTT-111N(3kHz)
MTT-5511(Blank) Frequency Counter
Output Level
Measurement Point
Set
FIG. 2 : Tape Azimuth Adjust Location
(Record/Playback Head)
FIG. 3 : Tape Azimuth Adjust Head Screw & Waveform FIG. 4 : Tape Azimuth Adjust Circuit & Waveform
Forward
Side
Reverse
Side
Adjust with Frequency
Counter Connected
L-CH
Peak
R-CH
Peak
Screw
Angle
Output Level
within
1 dB
within
1 dB
L-CH
Peak
R-CH
Peak Screw Angle
VH
Oscilloscope
L-CH
Output Level
Measurement Point
Set
Test Tape
MTT-114N
(10kHz)
Screen Pattern
In Phase 45 90 135 180
Good Wrong

ExplodedViewandMechanicalPartsList
Model : AMI-326/726/826LW/RW
5

NO PARTS NAME PART CODE Q’ty REMARK
1 PANEL FRONT 9CD0307700 MIPS 1
2 BADGE DAEWOO 9CD1500900 ABS 1
3 DOOR COVER A/B 9CD18109A0/B0 MIPS Each 1
Each 1
Each 1
Each 1
WINDOW DOOR A/B 9CD16161A1/B1 ACRYL
5 DOOR FRAME A/B 9CD18113A0/B0 ABS
6 SPRING DOOR EJECT L/R 9CD3008L0/R0 STS
7 DOOR CD 9CD1811000 MIPS 1
8 WINDOW FLT 9CD1616201 ACRYL 1
9 KNOB FUNCTION 9CD1338900 ACRYL 1
10 KNOB OPEN 9CD1339200 ACRYL 1
11 KNOB RING 9CD1339 00 ABS 1
12 KNOB CONTROL 9CD1338800 ABS 1
13 KNOB UBS 9CD1339000 ACRYL 1
1 KNOB VOL 9CD1339100 ABS 1
15-1 GUIDE FLT 9CD2505600 ABS 1 326LW/726LW/826LW
15-2 GUIDE FLT 9CD2506600 ABS 1 H926LW
16 FILTER LED 9CD 700800 PC T0.15 1
17 BRKT SIDE 9CD2 12900 ABS 2
18 DAMPER GEAR ASS’Y 2
19 LOCKER ASS’Y 2
20 PLATE FLT 9CD0911100 PVC SHEET T1.0 2 326LW/726LW/826LW
21 HOLDER AC CODE 9CD2303300 ABS 1 726LW/826LW/H926LW
22 CD DECK MECHA 9CD6009300 DCC-01BC+D73S 1
23-1 CASSETTE DECK LOGIC 9CD6010000 PIGEON CWL- FF-32 1 AUTO STOP (326LW)
23-2 CASSETTE DECK LOGIC 9CD6010100 PIGEON CWL- FF-33 1 AUTO REVERSE
2 CUSHION FOOT 9CD 207700 URETHAN 2
25 COVER BACK 9CD0 11100 MIPS 1
26 COVER TOP 9CD0 11 00 MIPS 1
27-1 CHASSIS BOTTOM 9CD0607100 SECC 1.0T 1 726LW/826LW/H926LW
27-2 CHASSIS BOTTOM 9CD0607500 ABS 1 326LW
28-1 HEAT SINK 1 9CD 0 500 AL 1 326LW
28-2 HEAT SINK N30 9CD 06200 AL 1 726LW
28-3 HEAT SINK N50 9CD 05900 AL 1 826LW
28- HEAT SINK N150 9CD 06000 AL 1 H926LW
29 COVER SIDE L 9CD0 115L0 MIPS 1
30 COVER SIDE R 9CD0 115R0 MIPS 1
31 COVER ANT 9CD0 10 00 ABS 1
32 HOLDER PCB 9CD230 800 MIPS 1 H926LW
33 BRACKET HEAT TR 9CD2 1 00 SUS 0.3T 1 726LW/826LW
3 BRACKET HEAT TR 9CD2 1 600 SECC 1.0T 2 726LW/826LW
DESCRIPTION
ExplodedViewandMechanicalPartsList
Model : AMI-326/726/826LW/RW
6
NO PARTS NAME PART CODE Q’ty REMARK
DESCRIPTION
35 BRACKET HEAT TR 9CD2 13900 SUS 0.5T 1 326LW
36 FRAME BOTTOM 9CD0607800 SECC 1.0T 1 H926LW
37 HEAT SINK PW 9CD 0 200 AL 1 H926LW
38 BRKT PCB C 9CD2 1 500 SECC 1.0T 1 H926LW
S1 SCREW TAPTTITE 7173261011 TT2 BIN 2.6 X 10 MFZN 11
S2 SCREW TAPTTITE 7173301011 TT2 BIN 3.0X10 MFZN 22
S3 SCREW TAPTTITE 7173301212 TT2 BIN 3.0X12 BK 18
S SCREW TAPTTITE 7173300611 TT2 BIN 3.0X6 MFZN
S5 SCREW TAPTTITE 7173 00611 TT2 BIN .0X6 MFZN
S6 WASHER SCREW 9CD3102 01 TT2 BIN 3.0X8 + D12
S7 WASHER SCREW 9CD3102 00 TT2 BIN 3.0X10 + D1 1
S8 SCREW TAPTTITE 7173301 11 TT2 BIN 3.0X1 MFZN 2 H926LW
S9 SCREW TAPTTITE 7173 01011 TT2 BIN .0X10 MFZN H926LW
NO Q’ty
P1 1
P2 1
P3 1
P 1
P5 1
AMI-826LW Reference
PARTS NAME REMARK
FRONT PCB
MAIN PCB
POWER PCB
DECK PCB
PCB CD H926LW
H926LW

WiringDiagram
7
Model : AMI-326LW/RW

WiringDiagram
8
Model : AMI-726LW/RW/826LW/RW

BlockDiagram
9
Model : AMI-326LW/RW

BlockDiagram
10
Model : AMI-726LW/RW/826LW/RW

SchematicDiagram
11
Model : AMI-326LW/RW
Ass’y Name : MAIN

SchematicDiagram
12
Model : AMI-726LW/RW/826LW/RW
Ass’y Name : MAIN
DA CE CK DO XIN NC
PD1 VSS
AM/FM
XOUT
VDD
FMIN
IFIN
FM
AMIN
NCST/MO
IF REQ LW
SD
S-CURVE
AM/FM
IF
BUFF 304KHz 19K 19K 0
23
14
1612 3 6 14513
811 7124 910 15
VDD1
R/DATA
QUAL
R/CLK
CLOCK
VSS1 ANALOG
V REF
VSS2 VSS3
PLL
1187.5Hz
PLL57KHz
RDS/ARI
anti
aliasimg
8thswitched
capacitor
filter comparator
BIPHASE
DECODER
TEST
Differential
DECODER
ALC

MAIN GND
3
14
13
1
210
6 5 4 9 8 7 11 12
6
5
3
2
41 7
9
813
11 14
1210
L101
21 20 19
11
15
14
2
12 17
4
5
7
8
6
18
9
16 13
3
10
22
1
VSS VT
N.C
MUTE
AMOSC 1/2
VT-IN FM/AM IF N.C VDD
IFREQ
DO
DI
CL
C B
I/F
AM/FM
PD
FMOSC
ST/MO
X-OUT
X-IN
FM
CE
Vtg(V) 1.81.8
IC201 Pin No. 13 14
Name Pin No.
Vtg(V)
12
2.1 4.8
#1 : SD ON(0V)
OTHERWISE(5V)
#2 : STEREO ON(0V)
OTHERWISE(5V)
15
3
2.1
4
2.1
567
GND
16 17 18 19
#2#1
2.1 2.1 2.1 2.1 #4
#3 : NORMAL(V=< 0.5V )
MUTE(1.4V=<V=<2.2V)
SEEK(V>=3.5V)
8 9 10 11 12
2.9
20 21 22 23 24
#3
4.8 3.5 3.8
2.1 2.1#5 4.8 3.5
#4 : FM(0V), AM(1.5V)
#5 : FM(0.2V), AM(0.9V)
CC104 : 15pF
CC104 : 12pF
KWANGSUNG : KSNT-213M-1
TOKO : RBW07VB-K5024
KWANGSUNG
TOKO
S-CURVE
AM/FM
IF
BUFF 304KHz 19K 19K 0
FTZ
CE X O
CC214
R217
JW
O
FTZ
CE
#5 : FM(0), AM(2.4)
#7 : VT
IC202 Pin No.
Vtg(V)
Pin No.
Name
Vtg(V)
#1 : FM(3.7),AM(0)
#3 : FM(3.7),AM(0)
2.5 N.C
12
0
12
VCC
13
Vtg(V)
Name
E(1)
B(3)
C(2)
FTZ OPTION
#1
18
1
7
VCC
#6#5
00
VCC
17
#4 : FM(0), AM(12)
#2 : ON TUNING OPERATION(VCC)
14
N.C
3
0
456
15 16
Q104
#6 : FM(2.4),AM(0)
12
Q001
0
Q003
12
0
0
00
0
12
111098
19 20 21 22
GND 2.5
#4
1
#2
#7
#3 0
12
IC205
GND
REMARK
BASIC : FM
5
JW
OX OX OO X820pF
560pF
RDS OPTION
X
O
X
OX
O
R218 R219 R220
JW205JW204CC215
JW213
L202L201
O
X
O
X
CC203
R214 R215
X
OO
X
R221 CF002
56K MS3-A
MJ-A56K
SchematicDiagram
Model : AMI-326LW/RW
Ass’y Name : TUNER
13

SchematicDiagram
Model : AMI-326LW/RW
Ass’y Name : TAPE
14

SchematicDiagram
Model : AMI-326LW/RW
Ass’y Name : CD
15

SchematicDiagram
Model : AMI-726LW/RW/826LW/RW
Ass’y Name : CD
16

SchematicDiagram
Model : AMI-326LW/RW, 726LW/RW, 826LW/RW
Ass’y Name : FRONT
17

P.C.BPatternLayout
18
Model : AMI-326LW/RW
Ass’y Name : MAIN PCB

P.C.BPatternLayout
19
Model : AMI-726LW/RW/826LW/RW
Ass’y Name : MAIN PCB