Pioneer FX-MG8057ZT/UC User manual

ORDER NO.
CRT3361
GS300
AUDIO SYSTEM
HEAD UNIT
CRT3361
PUB.NO.
Manufactured for TOYOTA
by PIONEER CORPORATION
GS430
VEHICLE DESTINATION PRODUCED
AFTER OEM PARTS No. ID No. PIONEER MODEL No.
LEXUS
GS300,GS430 U.S.A. , CANADA January 2005 86120-30D00-C0 P6857 FX-MG8057ZT/UC
LEXUS
GS300,GS430 U.S.A. , CANADA January 2005 86120-30D00-C0 P6857 FX-MG8057ZT-91/UC
LEXUS
GS300,GS430 U.S.A. , CANADA January 2005 86120-30D00-E0 P6861 FX-MG8007ZT/UC
LEXUS
GS300,GS430 U.S.A. , CANADA January 2005 86120-30D00-E0 P6861 FX-MG8007ZT-91/UC

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FX-MG8057ZT/UC
ID No.P6857
FX-MG8057ZT/UC
ID No.P6861
FX-MG8007ZT/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
CX-1011 CRT2406 3L Cassette Mech. Module:Mech. Description, Disassembly
Dolby noise reduction manufactured under license from Dolby Laboratories Licensing
Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corpo-
ration.
For details, refer to "Important Check Points for Good Servicing".

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SAFETY INFORMATION
CAUTION
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
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
If you are not qualified to perform the repair of this product properly and safely, you should not risk
and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the
of California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
repair
warranty.
trying to do so
state
-Service Precaution
1. 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.
2. Before disassembling the unit, be sure to turn off
the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside
the unit.
3. To protect the pickup unit from electrostatic discharge
during servicing, take an appropriate treatment
(shorting-solder) .
4. After replacing the pickup unit, be sure to check the
grating.

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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
0Safe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

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CONTENTS
SAFETY INFORMATION......................................................................................................................................3
1. SPECIFICATIONS.............................................................................................................................................6
2. EXPLODED VIEWS AND PARTS LIST.............................................................................................................7
2.1 PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC)..........................................................................7
2.2 EXTERIOR(FX-MG8057ZT/UC, MG8057ZT-91/UC, MG8007ZT/UC, MG8007ZT-91/UC) ........................8
2.3 SERVICE MECHANISM ASSY(1)............................................................................................................10
2.4 SERVICE MECHANISM ASSY(2)............................................................................................................12
2.5 CASSETTE MECHANISM MODULE .......................................................................................................14
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................16
3.1 BLOCK DIAGRAM....................................................................................................................................16
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)..............................................................................20
3.3 KEYBOARD UNIT ....................................................................................................................................26
3.4 CD MECHANISM MODULE(GUIDE PAGE).............................................................................................28
3.5 CASSETTE MECHANISM MODULE .......................................................................................................38
4. PCB CONNECTION DIAGRAM......................................................................................................................40
4.1 MAIN UNIT ...............................................................................................................................................40
4.2 KEYBOARD UNIT ....................................................................................................................................44
4.3 CONTROL UNIT(G2T) .............................................................................................................................46
4.4 PCB UNIT(LED), PCB UNIT(LOAD).........................................................................................................48
4.5 PCB UNIT(SIDE)......................................................................................................................................49
4.6 PCB UNIT.................................................................................................................................................50
4.7 PCB UNIT(M2 UNIT)................................................................................................................................51
4.8 DECK UNIT, SENSOR UNIT....................................................................................................................52
5. ELECTRICAL PARTS LIST.............................................................................................................................53
6. ADJUSTMENT ................................................................................................................................................63
6.1 CONNECTION DIAGRAM........................................................................................................................63
6.2 JIG CONNECTION DIAGRAM.................................................................................................................64
6.3 DOLBY B NR ADJUSTMENT...................................................................................................................67
6.4 AM NOISE CANCELER ADJUSTMENT ..................................................................................................68
6.5 BRACKET ADJUSTMENT........................................................................................................................69
6.6 TEST MODE.............................................................................................................................................70
6.7 CD ADJUSTMENT ...................................................................................................................................71
6.8 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT.....................................................73
6.9 TEST MODE(CD) .....................................................................................................................................75
7. GENERAL INFORMATION .............................................................................................................................79
7.1 DIAGNOSIS..............................................................................................................................................79
7.1.1 AVC-LAN DIAGNOSIS MODE...............................................................................................................79
7.1.2 DISASSEMBLY......................................................................................................................................84
7.1.3 PCB LOCATIONS..................................................................................................................................90
7.1.4 CONNECTOR FUNCTION DESCRIPTION ..........................................................................................91
7.2 IC..............................................................................................................................................................92
7.3 EXPLANATION.......................................................................................................................................100
7.3.1 SYSTEM BLOCK DIAGRAM...............................................................................................................100
7.3.2 OPERATIONAL FLOW CHART...........................................................................................................101
7.4 NOTES ON SERVICING ........................................................................................................................102
7.4.1 CLEANING ..........................................................................................................................................102
7.4.2 FACTORY SETTINGS .........................................................................................................................102
8. OPERATIONS ...............................................................................................................................................103

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1. SPECIFICATIONS
Power source.................13.2V(10.5V-16.0V allowable) DC
Backup current..............................................0.3mA or less
Grounding system........................................Negative type
Dimensions..............................215(W)x102(H)x185(D)mm
Weight..........................................................................2.6kg
Cassette player
Tape................................Compact cassette tape(C30-C90)
Tape speed ......4.76 cm/sec.(+0.14 cm/sec.,-0.05 cm/sec.)
Wow and flutter.................................0.2% or less(WRMS)
Crosstalk ..........................................................40dB or less
Stereo Separation.........................................30dB or more
S/N .................................................................40dB or more
Distortion.............................................................3% or less
CD player
System ...................................Compact disc audio system
Usable discs ..................................................Compact disc
Signal format .....................Sampling frequency : 44.1kHz
.....................................Number of guantization : 16;linear
S/N .................................................................80dB or more
Distortion..........................................................0.2% or less
FM tuner
Frequency........................................87.75, 87.9–107.9 MHz
S/N .................................................................46dB or more
Distortion..........................................................1.5% or less
IF interference ...............................................80dB or more
Image interference........................................35dB or more
Stereo Separation ..............................25dB or more(1kHz)
AM tuner
Frequency ......................................................530–1710 kHz
Selectivity .......................................20dB or more(±10kHz)
S/N .................................................................42dB or more
Distortion..........................................................1.5% or less
IF interference ...............................................55dB or more
Image interference........................................45dB or more
General

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2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC)
PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC) SECTION PARTS LIST
(
N
OTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.
• The >mark found on some component parts indicatesthe importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
• Screw adjacent to mark on the product are used for disassembly.
• For the applying amount of lobricants or glue, follow the instructions in this manual.
(In the case of no amount instructions,apply as you think it appropriate.)
"
Mark No. Description Part No.
* 1 Air Cap CHW1945
* 2 Air Cap CHW1948
3 Cover CEG1045
4 Cover CEG1325
5 Carton CHG4861
6 Contain Box CHL4861

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2.2 EXTERIOR
(FX-MG8057ZT/UC, MG8057ZT-91/UC, MG8007ZT/UC, MG8007ZT-91/UC)

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(1) EXTERIOR
(FX-MG8057ZT/UC, MG8007ZT/UC, MG8057ZT-91/UC, MG8007ZT-91/UC)
SECTION PARTS LIST
(2) CONTRASTTABLE
FX-MG8057ZT/UC, FX-MG8007ZT/UC, FX-MG8057ZT-91/UC and FX-MG8007ZT-91/UC are constructed the
same except for the following:
Mark No. Description Part No.
1 Screw AMZ26P040FTC
2 Screw BMZ26P040FTC
3 Connector CDE7857
4 Chassis CNA2547
5 Chassis CNA2610
6 Cover CND1987
7 Shield CND2396
8 Bracket CND2684
9 Insulator CNM9315
10 Seal CNM9364
11 Seal CNM9612
12 Label CRW1425
13 Label CRW1429
14 Main Unit CWM8455
15 Screw(M2.6x6) CBA1732
16 Screw BMZ30P060FTC
17 Screw(M3x6) CBA1393
18 Terminal(CN502) CKF1064
19 Terminal(CN902) CKF1064
20 Connector(CN901) CKM1322
21 Connector(CN402) CKM1350
22 Connector(CN401) CKM1351
23 Connector(CN721) CKS3886
24 Connector(CN741) CKS4266
25 Connector(CN761) CKS4761
26 Connector(CN501) CKX1064
27 Holder CNC9701
28 Holder CND1154
29 •••••
30 Shield CND1985
31 Insulator CNM9203
32 •••••
33 Holder CNC8855
34 Chassis Unit CXB9312
35 Frame Unit CXB9943
36 Screw BPZ20P080FTC
37 Button(TAPE EJECT) See Contrast table(2)
38 Button(LEFT UP) See Contrast table(2)
39 Button(LEFT DOWN) See Contrast table(2)
40 Button(RIGHT UP) See Contrast table(2)
41 Button(RIGHT DOWN) See Contrast table(2)
42 Button(SCAN) See Contrast table(2)
43 Shield CND1353
44 Connector(CN991) CKS4771
45 Knob Unit See Contrast table(2)
46 Grille Unit See Contrast table(2)
47 Door See Contrast table(2)
48 Spring CBH1371
49 Door Unit CXC4755
50 Door CAT2642
51 FM/AM Tuner Unit CWE1630
52 •••••
53 CD Mechanism Module(G2T) CXK7111
54 Screw BMZ20P025FTC
55 Screw BMZ26P040FTC
56 Screw(M2x2.5) CBA1624
57 Spring CBH2481
58 Spring CBH2482
59 Connector CDE7589
60 Connector CDE7692
61 Case CNB2783
62 Sheet CNM5981
63 Insulator CNM8979
64 Damper CNV6608
65 Control Unit(G2T) CWX2920
66 Connector(CN601) CKS1956
67 Connector(CN101) CKS4512
68 Chassis Unit CXB9311
69 Bracket Unit CXC1656
70 Service Mechanism Assy CXX1900
71 Cassette Mechanism Module EXK4297
72 Screw IMS26P040FTC
73 Screw PMH26P060FTC
74 Transistor(Q952,971,991) 2SB1185
Mark No. Description Part No.
Mark NO Description FX-MG8057ZT/UC
FX-MG8057ZT-91/UC FX-MG8007ZT/UC FX-MG8007ZT-91/UC
37 Button(TAPE EJECT) CAC8896 CAC9069
38 Button(LEFT UP) CAC8898 CAC9071
39 Button(LEFT DOWN) CAC8899 CAC9072
40 Button(RIGHT UP) CAC8900 CAC9073
41 Button(RIGHT DOWN) CAC8901 CAC9074
42 Button(SCAN) CAC8897 CAC9070
45 Knob Unit CXC3455 CXC4282
46 Grille Unit CXC4940 CXC4951
47 Door CAT2635 CAT2665

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2.3 SERVICE MECHANISM ASSY(1)
1
1
1
1
3
3
1
1
1
1
1
31
2
3
3
3
1
3
33
3
3
D
F
1:GEM1043
2:GEM1042
3:GEM1024
1

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SERVICE MECHANISM ASSY(1) SECTION PARTS LIST
Mark No. Description Part No.
1 Screw BMZ20P020FTB
2 Screw BMZ20P025FTC
3 Screw(M2x2) CBA1834
4 Screw(M2x2.5) CBA1626
5 Screw(M2x2.5) CBA1609
6 Screw(M2x4.5) CBA1629
7 Spring CBH2460
8 Spring CBH2461
9 Spring CBH2484
10 Spring CBH2694
11 Spring CBH2486
12 Spring CBH2668
13 Spring CBH2500
14 Connector CDE6698
15 Collar CLA4329
16 Collar CLA4330
17 Collar CLA4331
18 Gear CND1649
* 19 Cam Gear CND1650
20 Frame CND1651
21 Steer CND1667
22 Arm CND1657
23 Bracket CND1658
* 24 Bracket CND1660
* 25 Lever CNC9953
26 Gear CNV8494
27 Holder CNV8499
28 Holder CNV8504
* 29 Chassis Unit CXC1642
* 30 Frame Unit CXC1643
* 31 Arm Unit CXC1647
32 Spring CBH2670
33 Holder Unit CXC1644
34 Holder Unit CXC1646
35 Tray Unit CXB6930
36 Lever Unit CXC1648
* 37 Lever Unit CXC1649
38 Lever Unit CXC1650
* 39 Lever Unit CXC1651
40 Cam Motor Assy CXB7522
41 Washer CBF1064
42 Gear CNV6610
43 Gear CNV6611
44 Motor Unit(M1) CXC1144
45 Screw JFZ20P020FTC
46 Washer YE20FTC
47 ELV Motor Assy CXB7523
48 Screw BMZ20P025FTC
49 Washer CBF1064
50 Holder CND1668
51 Gear CNV6634
52 Gear CNV6635
53 PCB Unit(LED) CWX2614
* 54 Connector(CN31) CKS4523
55 Motor Unit(M2) CXC1145
56 Screw JFZ20P020FTC
* 57 Arm Unit CXC1653
* 58 Bracket Unit CXC4688
* 59 Lever Unit CXC2159
* 60 Lever Unit CXC1659
* 61 Lever Unit CXC1661
* 62 Arm Assy CXC4766
63 Washer CBF1038
64 Spring CBH2489
* 65 Arm CNV8501
66 Bracket Unit CXC1652
67 Screw BMZ20P025FTC
68 Spring CBH2667
69 Volume(VR1) CCW1023
70 Bracket CND1652
71 Steer CND1656
72 Flexible PCB CNP6368
73 PCB Unit(SIDE) CWX2613
74 Connector(CN12) CKS3991
* 75 Connector(CN14) CKS4404
76 Connector(CN13) CKS4525
77 Connector(CN11) CKS4572
78 Lever Unit CXC1779
* 79 Lever Unit CXC4689
* 80 Lever Unit CXC4690
81 Screw JFZ20P020FTC
82 Washer CBF1037
Mark No. Description Part No.

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2.4 SERVICE MECHANISM ASSY(2)
2
1
1
1
1
1
1
1
1
1:GEM1043
2:GEM1042
G
H
E

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SERVICE MECHANISM ASSY(2) SECTION PARTS LIST
Mark No. Description Part No.
* 1 Carriage Mech. Assy(G2T) CXC4765
2 Screw(M2x2) CBA1834
3 Screw(M2x6) CBA1628
4 Washer CBF1038
5 Spring CBH2453
6 Spring CBH2480
7 Spring CBL1521
* 8 Guide CNC9402
9 Flexible PCB CNP6217
10 Holder CNV8495
11 Holder CNV8496
12 Rack CNV8497
13 Arm CNV8500
14 Lever CNV8502
15 Holder CNV8503
16 PCB Unit CWX2611
17 Connector(CN41) CKS3785
18 Connector(CN42) CKS4508
19 Connector(CN1) CKS4508
20 Support Wheel Unit CXC4691
21 Screw Unit(-B) CXB7518
22 Carriage Motor Assy CXB7521
23 Washer CBF1038
24 Belt CNT1088
25 Pulley CNV6627
26 Gear CNV6629
27 Motor Unit(M3) CXC4658
28 Screw JFZ14P020FTC
29 Loading Mech. Assy CXC4362
30 Washer CBF1037
* 31 Washer CBF1075
* 32 Spring CBH2450
33 Spring CBH2672
* 34 Spring CBH2457
* 35 Spring CBH2580
* 36 Frame CND1653
* 37 Arm CND1654
* 38 Sheet CNM7295
39 Roller CNV6616
40 Collar CNV6617
* 41 Guide CNV6622
* 42 Holder CNV6636
* 43 Lever CNV6732
* 44 Lever CNV6733
45 Collar CNV6734
* 46 Holder CNV7144
47 Screw JFZ12P018FTC
48 Washer CBF1037
* 49 Motor Unit CXC4220
50 Shaft Unit CXB7528
51 Screw JFZ20P020FTC
52 PU Unit(Service)(PX1) CXX1569
* 53 Gear CNV6620
* 54 Gear CNV6621
55 Switch(S1,2) CSN1057
* 56 Connector CDE6674
Mark No. Description Part No.

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2.5 CASSETTE MECHANISM MODULE
For grease application, refer to the service manual for CX-1011 (CRT2406).
I
J

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CASSETTE MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No.
1 Screw BSZ20P040FTC
2 Washer CBF1037
3 Washer CBG1003
4 Screw EBA1028
5 Screw BMZ20P022FTC
6 Spring EBH1653
7 Spring EBH1642
8 Spring EBH1641
9 Spring EBH1626
10 Spring EBH1627
11 Spring EBH1648
12 Cord EDD1024
13 Photo-reflector(Q101) EGN1004
14 Arm ENC1526
15 Lever Unit EXA1610
16 Lever ENC1543
17 Arm ENC1532
18 Frame ENC1533
19 Holder ENC1547
20 Gear ENC1535
21 Arm ENC1550
22 Roller ENR1040
23 Belt ENT1027
24 Collar ENV1508
25 Arm ENV1539
26 Arm ENV1540
27 Gear ENV1569
28 Gear ENV1547
29 Gear ENR1044
30 Worm Wheel ENV1559
31 Lever ENV1551
32 Flywheel ENV1607
33 Gathering PCB ENX1073
34 Switch(S101,S102,S103) ESG1007
35 Deck Unit EWM1047
36 Plug(CN251) EKS1026
37 Gathering PCB ENX1080
38 Motor Unit(M1) EXA1618
39 Motor EXM1035
40 Head Assy(HD1) EXA1594
41 Arm ENC1537
42 Screw EBA1031
43 Bracket ENC1559
44 Chassis Unit EXA1636
45 Pinch Holder Unit EXA1608
46 Pinch Roller ENV1518
47 Pinch Holder Unit EXA1607
48 Pinch Roller ENV1518
49 Reel Unit EXA1625
50 Head Base Unit EXA1611
51 Lever Unit EXA1587
52 Gear Unit EXA1632
53 Motor Unit(M2) EXA1660
54 Washer HBF-179
55 Spring EBH1537
56 Worm Gear ENV1564
57 Spring EBH1672
58 Lever ENC1548
59 Washer YE15FTC
60 Tube ENM1039
61 Spring EBH1645
62 Spring EBH1545
63 Sensor Unit EWM1041
Mark No. Description Part No.

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
M
LOADING
VR1 ELV SENSE
VR11
S31 CAMLOAD
PU UNIT(SERVICE)
(PX1)
PCB UNIT(M2 UNIT)
HOLOGRAM
UNIT
FOCUS ACT
TRACKING ACT
MD
LD+
LD-
LD
MD
FO+
TO+
CN41
M
M
SPINDLE
M3 CARRIAGE
CLAMP
10
2
1
16
14
A+C,B+D,
E,F
2A3
3
5A2
A1 IC 1
BA6849FS
MOTOR
DRIVER CN1
EC 19
S8 CLAMP
HOME
S7 HOME
5
2
1
5
2
1
CN42
S41 LOAD3
PCB UNIT
23
14
13
28
26
6
9
10
1
11
12
23
14
13
28
26
6
9
10
1
11
12
PCB UNIT(SIDE)
CN12
S11 CAMCLMP
M
M1 CAMGEAR
CN31
M
M2 ELV
S32 CAMEOK
D31 D32
PCB UNIT
(LED)
CN14
CN13
Q22 Q21
S21 LOAD1
S22 LOAD2
PCB UNIT
(LOAD)
2
1
4
5
CN11
MD 23
32
33
LD+
LD-
FOP 18
TOP 20
SIN(EC) 40
CLAMP 36
HOME 37
LOADSW2 45
50
COP 34
COM 35
CGM 3
CGP 1
ELP 15
ELM 13
CAMOK 11
CAMLOAD 10
LED 12
ELVSNS 46
EREF 48
LOADPHT 7
LOADSW1 8
LOP 6
LOM 5
23
32
33
18
20
40
36
37
45
50
34
35
3
1
15
13
11
10
12
46
48
7
8
6
5
CONTROL UNIT(G2T)
Q101
96 PD
CD CONTROL
97 LD
A+C,B+D,E,F
L-OUT 16
IC504(1/2)
TC74VHCT08AFT
3 1,2
IC 201
UPD63711GC
6 5,6
34
LRCKIN
32
SCKIN
3.3V - 5V CONVERTER
5V - 3.3V CONVERTER
IC505(1/2)
TC74VHC541FT
DOUT,LRCK,
SCKO,RADV,
SBSY
9ZLRCK
8ZSCK
IC501
BU9423AKS
SHOCK PROOF
CONTROLLER
10 V+5
13V
IC502
HY57V161610E
T
IC702
PEG024B
MECHANISM
CONTROLLER
IC504(2/2)
TC74VHCT08AFT
IC505(2/2)
TC74VHC541FT
YMDATA,
YMLD,
YMCLK
15
ZSENSE
9,10
8
98
ZSENSE
BUFFER RA
M
14 VDD
VCC2
3+3ch
DRIVER
IC 301
BD7962FM
ELV1,ELV2,ELVCONT,LD1,LD2,
LOCONT,CG1,CG2
9
29 CONT
MUTE
MOTOR CONTROL
14 VD
XSI,XSO,XSCK,XSTB,XAO,XRST,FOK,LOCK,
TSI,TSO,TSCK,TSTB,PACK,SBSY
SERVO DSP I/F
SERVO EQUALIZER OUTPUT
FD,TD,SD,MD
18
15 OUT1+
OUT2-
V
74
CDMUTE
CN101
BSI,BSO,
10
reset
37
VDCONT
V+5
S-L2980A33MC-C6S
3V REGULATOR
5
1
IC 302
3V
93
TEMP
94
VDIN VD
26 OPOUT
COP
COM
ELP
ELM
LOP
LOM
CGM
CGP
19
20
2
3
21
22
34
35
OUT3+
OUT3-
OUT5-
OUT5+
OUT4+
OUT4-
OUT6+
OUT6-
VD
CLAMP
HOME
LOADSW2
CAMCLMP
ELVSNS
EREF
72
79
82
23
91
92
HOME2
HOME
LOADSW2
CAMCLMP
EREFF
CAMOK 21 CAMOK
CAMLOAD 22 CAMLOAD
LOADPHT 89 LOADPHT
LOADSW1 81 LOADSW1
ELVSENS
C
GF
H
D
E
Q702(1/2)
Q702(2/2)
VDD
96 85
VREF adena
VD
8LDCONT2
9LDCONT3
24 LDCONT1
11
22
55
77
88

FX-MG8057ZT/UC 17
5678
5678
C
D
F
A
B
E
OF
E
R
1
3V
IC502
HY57V161610ETP-8
C
505(2/2)
4
VHC541FT
YMDATA,
YMLD,
YMCLK
BUFFER RAM
14 VDD
VCC2
Q602
Q603
CD MUTE
VD
Q601
74
CDMUTE
CN601
BSI,BSO,BSCK,BRXEN,BSRQ,BRST
10
reset
LOUT
37
VDCONT
9
6
3
RESET
VDCONT
VDD
VD VD 17
18
IC 303
BA05SFP
5V REGULATOR
4
2
V+5
S-L2980A33MC-C6S
3V REGULATOR
5
1
IC 302
93
TEMP
94
VDIN VD
A
CN721
8
n
a

FX-MG8057ZT/UC
18
1234
1234
C
D
F
A
B
E
VDCNT2
RESET
CN501
SUB
ANTENNA
VDD
16
13
10
11
2
Q971
Q972
VDCONT2
AU8V
AC5V
MAIN
ANTENNA
IC 511
LA1061M
5
6
Q521
DIVERSITY
MCOMP
IC561
HA12181FP
AM NOISE CANCELER
CN721
SUB
MAIN
1
NIN
39
CD 9V REGULATOR
FML
13
CSL1
BU13
16
20
3
2
21
CN761
IC 3
EEPROM
28
27
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
IC1
MIXER, IF AMP, DET.
6
21
18
LDET
COMP
22
25 10 14 12 15 16 8 13 2 3 4
CF202
VDD
VCC
DI/DO CE2 CK CE1 SDBW SL FMSD NL1 NL2
IC 2 FM MPX
AMANT
FMANT
ATT
ATT
AMRF
FMRF
IMG ADJ
RF ADJ
X901
10.25MHz
ANT ADJ
LOCL
23 LOCH
AMDET
MPXREF 41kHz
AM 2ND IF
450kHz
19
CREQ
11
DGND
1
STIND
L ch
5
R ch
924
AMDET FMLOCL
20
177
AMPNS WC
26 RFGND
AMIN
Q561
IC581
PM4009A
X581
RDS
DECODER 1211
20
8
AM
LDET
FMSD
1
CD9V
13
AUDIO+B
RDT
5
Q533
AUDIO+B
LOCL
BU13
MCOMP
CDL1
Q523
MMFIX
MMFIX
PDAT
1
AU8V
STBY
B.U
MUTE
MTL
LOAD
5
1
4
2
1
4
5
12
10
23
22
9
I
DECK UNIT
IC251
HA12216F
IC351
PA2020A
EQ AMP
MECHANISM
DRIVER
CN251
CN252
CN254
CN255
CN253
6
16 TAPE+B
Lch
10
12
FWD
L-ch
REV
L-ch
37
38
39
18 19
17
315 6
8710
CN256 315 6
S101
LOAD
S102
MODE
Q101
REEL
SENSE
M
M
M2
SUB
MOTOR
M1
MAIN
MOTOR
5
2
1
SENSOR UNIT
S103
70µs
4
4
J
I
C
CN601
24
FM/AM TUNER UNIT

FX-MG8057ZT/UC 19
5678
5678
C
D
F
A
B
E
AC5V
13
X615
56 3
56 3
4
LC75700TS
IC 951
4
BU5V
IC 958
S-80840CNNB-B8Z
52
12
12
reset
RESET
RESET
15 XIN
13 XOUT 75
74
11
10
EC1+
4
EC2- 3
EC2+
65
CONTROLLER
SYSTEM
IC 601(2/2)
KEY
MATRIX
CN741
CN991
KEYBOARD UNIT
EAUP EAUN EVLP
ILL13
asens
bsens
BU12
Q991
KEY CONTROLLER
VR945
PWR•VOL
VR935
TUNE
EC1-
EVLN
1
1
AVC-LAN BUS DRIVER
UNBALANCE TO BALANCE CONVERTER
IC861
HA12187FP
6
BU14
AVC-LAN MUTE
Q822
ISENS
Q921
BSENS
Q931
ASENS
Q911
5
Q992
AU8V
SWVDD
IC401
NJM2068V
TUNER
MIXING AMP 7
IC351
NJM2068V
67
IC355
NJM2068V
67
SYSMUTE1
30
29
21
TX
RX1
RX2
isen
22
IPPW
1
2
8
bsens
TX
RX
isens
IPPW
MUTE
RX
56
LANMUTE 95
STSW1 97
STSW2
AUDIO +B REGULATOR
BU14
Q998(1/2)
Q998(1/2)
Q997(2/2)
Q997(2/2)
AU8V
FM8V
AM8V
42
AMPW 41
FMPW
FML
CSL1
CDL1
B
A
M
IC331
TC4052BFT
23
1
4
SW2
CN401
ACC +B
ILL-ILL+
ANTAMP
TX-TX+
mute
R-R+
L-L+
GNDSLD
CN901
LDET
F
MSD
BU5V
SELECTOR
asens
ANTPW
ANT+B
Q942
AC5V
Q941
55
SWVDD
CONTROLLER
IC 601(1/2)
SYSTEM
FMSD
LDET
PDAT
CE2
CK
CE1
SL
85 FMSD
19 ldet
100 PDI
46 PDO
2PCE2
47 mpck
91 PCE1
1
MSL
MAIN UNIT
A
PD5844A
PD5844A
66 stby
76 mtl
72 CSLOAD
RDT
RDT 44 RDT
BU13
STSW2
ILL13
KTS3
KD1
EAUP EAUN EVLP EVLN
EVLP
EVLN
EAUP
EAUN
LDO,LCK,LCE,LDI,LRST
ILLB REGULATOR
ILL-
Q871
AC5V
ILL-
94
ILL-
AMPW
FMPW
Q601(2/2)
Q601(1/2)
Q602
6
9
10
INH
B
A
SEL1b
SEL1a
82
SEL1b 81
SEL1a
53
SYSMUTE 52
sysmute@
6
NL1 90 NL1
LOCL 50 LOCL
BU13
Q982
CREQ 26 currq
ST 86 st
SDBW 45 SDBW
Q341
Q381
BUMT
FRMT
IC421
NJM2068V
7
6
IC411
NJM2068V
7
6
IC951
S-812C56AUA-C3K
3
VDD5V REGULATOR
BU13
Q951
BU12
Q952
ACCA Q953
BU5V
2
Q954(1/2)
Q954(2/2)
BU12
ACCA
ACCA
TX+
TXS-
STSW1
Q981
BU13
SYSPWR
Q831(2/2)
Q832
Q831(1/2)
AMP
Q881(1/2)
AU8V
BMUTE
Q881(2/2)
BU13
Q882
Q842
Q841
SYSMUTE
16
16
24
PWMIL
7
7
AC5V
AC5V
15
VDD
SWG
SW1
L+ TXM-
+B
CN402
L-
MUTE
SLD GND
TXM+
R+
R-
SLD2 SLD1
RSLD
ACC
IC301
NJM2068V
75
6
5
ALP
ALN
AC5V
BU14
FUSE
8A
Q911-Q926
Q991
Q972(1/2) Q972(2/2)
IDAB
IDGW
GREEN
AMBER
IDAB IDGW
11
12
BU13
AV8V
Q955
Q971
28
PWMIND
14
14
IDCT
IDCT
Q951
16
reset
SYSMUTE1

FX-MG8057ZT/UC
20
1234
1234
C
D
F
A
B
E
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
A-a A-b
A-a A-b
A-b
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
SYSTEM CONTROLLER
FM/AM ANTENNA
TAPE : -7.2 dBs(315Hz, 2
5
CD : +2.2 dBs(1kHz, 0dB)
FM : -22.2 dBs(400Hz,30%)
AM : -12.2 dBs(400Hz,30%)
ICN251
CCN601
BCN991