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SECTION 1
SERVICE
MANUAL
TABLE OF CONTENTS
I. II. III. IV. V. VI. VII.
TECHNICAL DATA DISMANTLING OF UNIT CONTROLS PRINCIPAL PARTS LOCATION LEVEL DIAGRAM MAIN AMP ADJUSTMENT .......................... CLASSIFICATION OF VARIOUS P.C BOARDS.................................... 1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER 2. COMPOSITION OF VARIOUS P.C BOARD
2 3 4 4 5 5 6 6 . 7
For basic adjustments measuring methods, and operating principles, refer to GENERAL OPERATING PRINCIPLES AND ADJUSTMENTS.
I. TECHNICAL DATA 1. Power Amplifier Section
Continuous Power Output POWER BANDWIDTH (1HF) SIGNAL TO NOISE RATIO (1HF) RESIDUAL NOISE CHANNEL SEPARATION (1HF) DAMPING FACTOR OUTPUT 20 watts per channel, minimum RMS, at 8 ohms from 20 to 20,000 Hz with no more than 0.5% total harmonic distortion 10 to 45,000 Hz/8 ohms (Total Harmonic Distortion 0.5%) Phono: Better than 85 dB Aux: Better than 95 dB Less than 0.8 mV at 8 ohms Phono: Better than 55 dB at 1,000 Hz More than 60 (1 kHz, 8 ohms) Speakers: A,B (4 to 16 ohms)/A+B(8 to 16 ohms) Headphone: 4 to 16 ohms
2. Pre Amplifier Section
INPUT SENSITIVITY AND IMPEDANCE Phono: 3 mV/47 k ohms AUX: 150 m V/ 100 k ohms Tuner: 150 mV/100 k ohms Tape Monitor: PIN; 150 mV/100 k ohms DIN; 150 mV/100 k ohms TapeREC: PIN; 150 mV/100 k ohms DIN; 150 mV/100 k ohms Phono (RIAA equalization) 30 to 15,000 Hz +-1 dB BASS: ±9 dB at 100 Hz, TREBLE: ±7 dB at 10 kHz +10 dB at 100 Hz, +5 dB at 10 kHz (Volume Control set at -30 dB position) HIGH: -6 dB at 10 kHz, LOW: -6 dB at 50 Hz
OUTPUT LEVEL AND IMPEDANCE FREQUENCY RESPONSE TONE CONTROL LOUDNESS CONTROL FILTER
3. Others
SEMICONDUCTORS POWER REQUIREMENTS Transistors: 18, Diodes: 5, IC: 1 U.S.A. and Canada model: 120V, 60 Hz CEE models: 220V, 50 Hz Other models: 110/220/240V, 50/60 Hz switchable 380(W) x 125(H) x 263(D) mm ( 1 5 x 4 . 9 x 10.3) inches 5.5 kg (12.1 IDS.)
DIMENSIONS WEIGHT
NOTE: For improvement purposes, specifications and design are subject to change without notice.
II. DISMANTLING OF UNIT
In case of trouble, etc. necessitating disassembly, please disassemble in the order shown in photograph. Reassemble in reverse order.
1
5
SCREWS SCREWS
2
CABINET
6
FRONT PANEL
SCREWS SCREWS
3
7
BOTTOM PLATE
ADJUSTMENT SCREWS
4
A
c
L)
t
VII. CLASSIFICATION OF VARIOUS P. C BOARDS
1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER P.C Board Main Amp P.C Board MFC P.C Board LED P.C Board VR P.C Board Headphone P.C Board Tone Control P.C Board Number of P.C Board
m
icro
M2-5018/A M2-5019 M2-5019A M2-5019B M2-5019C M2-5022
2. COMPOSITION OF VARIOUS P.C BOARD 1) MAIN AMP P.C BOARD M2-5018/A, LED P.C BOARD M2-5019A
3) VR P.C BOARD M2-5019B
WHT/CROSS BLK
M2-50.9
M2-5022
VOLUME
LOUDNESS
BALANCE
4) HEADPHONE P.C BOARDM2-5019C
ISPBl
5) TONE CONTROL P.C BOARD M2-5022
WHT/LONG BLU
2) MFC P.C BOARD M2-5019
[TAPE MONITOR]
SECTION 2
PARTS LIST
TABLE OF CONTENTS
1. 2. 3. 4. 5. 6. 7. 8. 9. RECOMENDED SPARE PARTS LIST .............. ...17 MAIN AMP P.C BOARD (M2-5018) BLOCK........... 18 MFC P.C BOARD (M2-5019) BLOCK ...... ................ 18 VOL P.C BOARD (M2-5019B) BLOCK................ .18 HEADPHONE P.C BOARD (M2-5019C) BLOCK.....................................18 TONE CONTROL P.C BOARD (M2-5022) BLOCK ..................18 ASSEMBLY BLOC...........................................................................................19 FINAL ASSEMBLY BLOCK.. ...................... 21 LIST OF JNTERCHANGEABLE SEMICONDUCTORS ................ 22
....................................................................................
INDEX
OM R
23
Resistor and Capacitor which is not listed in this parts list, please refer to COMMON LIST FOR SERVICE PARTS.
HOW TO USE THIS PARTS LIST
1. This parts list is compiled by various individual blocks based on assembly process. 2. When ordering parts, please describe parts number, serial number, and model number in detail. 3. How to read list. The reference number corresponds with illustration or photo number of that particular parts list. This number corresponds with the Figure Number. This number corresponds with the individual parts index number in that figure. A small "x indicates the inability to show that particular part in the Photo or Illustration. Schematic Diagram Number of individual manufactured part. (not required for parts order) Quantity of particular part required.
12-115x
Ref. No.
Parts No.
Description
Schematic
No Q'ty
12-ll5x 12-116 12-117x 12-118 12-119
FLYWHEEL BLOCK #13 800425 Flywheel Block Assy. Comp. RDG#13 244506 Flywheel Only RD 233 244754 Felt, Flywheel RD275 251324 Main Metal Case RD 236 253080 Main Metal RD237
4. The symbol numbers shown on the P.C. Board list can be matched with the Composite Views of components of the Schematic Diagram or Service Manual. 5. The indications of Resistors and Capacitors in the photos of P.C. Board are being eliminated. 6. The shape of the parts and parts name, etc. can be confirmed by comparing them with the parts shown on the Electrical Parts Table of P.C. Board. 7. Both the kind of part and installation position can be determined by the Parts Number. To determine where a parts number is listed, utilize Parts Index at end of Parts List. It is necessary first of all to find the Parts Number. This can be accomplished by using the Reference Number listed at right of parts number in the Parts Index, (meaning of ref. no. outlined in Item 3 above). 8. Utilize separate "Price List for Parts" to determine unit price. The most simple method of finding parts Price is to utilize the reference number.
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CAUTION: 1. When placing an order for parts, be sure to list the parts no. model no., and description. There are instances in which if any of this information is omitted, parts cannot be shipped or the wrong parts will be delivered. 2. Please be careful not to make a mistake in the parts no. If the parts no. is in error, a part different from the one ordered may be delivered.
1. RECOMMENDED SPARE PARTS LIST
Parts No. BA211263 BA211252 BA211274 BA211285 BA211432 BC224807 BD211230 BT225178 BT2 15043 BT215054 BT239591 ED656357 ED551733 ED656278 ED219903 EI697871 EJ650272 EJ698051 EJ225022 EJ240581 E0650823 ES225055 ES225088 ES224965 ES225044 ES219846 ES224436 ES239218 ES242346 ET219870 ET2 19881 ET223446 ET219868 ET219857 ET539987 EV573366 EV224943 EV224954 EV219835 SK224886 SK646817 SK634410 SK225090 SP224662 SZ645243 Parts Nomenclature Multi Function P.C Board Comp. M2 5019 Main Amp P.C Board Comp. M2 5018 Volume P.C Board Comp. M2 5019B Headphone P.C Board Comp. M2 5019C Tone Control P.C Board Comp. M2 5022 Cabinet A M2 5013 Front Panel Block Comp. AM 2200(U) Power Transformer AM 2200T 1 Power Transformer AM 2200T 2 Power Transformer AM 2200T 3 Power Transformer AM 2200T 4 Luminous Diode SEL105R Silicon Varistor STV 4H Silicon Diode 1S2472VE Silicon Diode GP15D IC LA3122 Pin Jack 14P JPJ379 1 1 Din Jack Headphone Jack LJ255 1 12 Push Terminal 4P Phase Equalizer Coil 2.2µH Rotary Switch SR26N C30K Push Switch 2F 0005FF3220 Push Switch 1FT 0004AF4920 Push Switch 2F 0002FF1620 Push Switch 3FT 0001FF6820 Power Switch JP01 Power Switch JP01 (TV 4) Power Switch JP 17 Transsistor 2SD586 (Q)(R) Transistor 2SB616 (Q)(R) Transistor 2SC1571NP (G)(H) Transistor 2SB560 (E)(F) Transistor 2SD438 (E)(F) Transistor 2SC1312R (F)(G) Semi fixed Volume V10K8 4 2 200 ohmsB Single axial 2 throw Volume V24L5G 3BM 250kx2 Single axial 2 throw Volume V16L4G 31Z 250kx2 Single axial 2 throw Volume V16L4 I5A 100kx2 Power Knob M2 5021 Single Knob AA 5250 Push Button Knob J 91 5051 Volume Knob M2 5015 Rear PanelA M2 5010 Circular Foot A CA 6014 Reference No.
CSA CEE
BEAB
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Jl (Multi Function P.C Board) J2 (Multi Function P.C Board) Jl (Headphone P.C Board) L1 (Main Amp P.C Board) SW1 (Multi Function P.C Board) SW2 (Multi Function P.C Board) SW1 (Volume P.C Board) SW1 (Headphone P.C Board) SW1 (Power Switch)
CSA CEE
VR1 (Main Amp P.C Board) VR1 (Volume P.C Board) VR2 (Volume P.C Board) VR1 ,2 (Tone Control P.C Board)
2. MAIN AMP P.C BOARD (M2 5018) BLOCK
Symbol No. 21 2 2 23 2 2 2 2 2 2 2 2 2 Parts No. BA211252 BA270764 BA27077S Description Main Amp P.C Board Comp. (M2 5018) Main Amp P.C Board Comp. (M2 S018XCEE) Main Amp P.C Board Comp. (MS S018)(CSA) Transistor 2SC1570NP (G)(H) Transistor 2SB560 (E)(F) Transistor 2SD438 (E)(F) Transistor 2SB560 (E)(F) Transistor 2SD438 (E)(F) Transistor 2SB560 (E)(F) Silicon Diode 1S2472 Silicon Diode GP15D Semi fixed/Vol. V10K8 1 2 200 ohmsB Phase Equalizer Coil 2.2 µH(K) Transistor P.C Board (M2 5018A) Transistor P.C Board A (M2 5018A)(CSA) Fuse Holder, P.C Board S N5051 Fuse Clip, P.C Board H0426 (CEE) Metal Oxide Film/R. 2W 0.47 ohms (K) Solid A l u m i n u m / C . 1µF(M) 10WV(Vert. Type) FM/C. 10PF(K) 500WV Q'ty 1 1 1 4 2 1 1 2 2 1 4 2 2 1 1 8
8
5. HEADPHONE P.C BOARD (M2 5019C) BLOCK
Symbol No. 51 S J1 S SW1 5 R1.2 Parts No. BA21128S EJ225022 ES22S044 ER409814 Description Headphone P.C Board Comp. (M2 S019C) Headphone Jack Push SW. 2F 0002FF1620 Metal Oxide Film/R. 2W 220 ohms (K)
Q'ty
1 1 1 2
TR1.2 ET245790 TR3 ET219868 TR4 ET219857 TRS ET219868 TR6 ET219857 TR7 ET219868 D1 ED656278 D2 to 5 ED219903 VR1 EV245823 E0650823 EA233932 EA233943 EJ514822 EJ592503
6. TONE CONTROL P.C BOARD (M2 5022) BLOCK
Symbol No. 61 Parts No. BA211432 Description
Q'ty
2 L1 24 2 5 26 27
Tone Control P.C Board Comp. (M2 5022) 6 VR1.2 EV219835 Single axial 2 throw Vol. V16L4 20A 100kx2 6 SWl ES219846 Push SW. 3FT 0001FF6820 6 C4 EC219813 Solid Aluminum/C. 0.1 µF(M) 10WV (Vert. Type)
1 2 1 2
2 R18.19 ER219914 2 C10 2 C13 EC557155 EC474671
4
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2 2 Q'ty 1 1 1 1 1
M
3. MFC P.C BOARD (M2 5019) BLOCK
Symbol No. Parts No. 31 BA211263 3 3 3 3 IC1 SW2 J1 J2 E1697871 ES225088 EJ650272 EJ698051 Description Multi Function P.C Board Comp. (M2 5019) 1C LA 3122 Push SW. 2F 0005FF3220 Pin Jack 14P JPJ379 1 1 Din Jack
4. VOL P.C BOARD (M2 5019B) BLOCK
Symbol
No. 41 4 TR1 4 VR1
Parts No. BA211274 ETS39987 EV224943 EV224954 ES224965 EC5S7155 EC223413
Description Vol P.C Board Comp. (M2 S019B) Transistor 2SC1312R(F)(G) Single axial 2 throw Vol. V24L5G 3BM 250kx2 Single axial 2 throw Vol. V16L4G 31Z 250kx2 Push SW. 1FT 0004AF4920 Solid Aluminum/C. 1µF(M) 10WV (Vert. Type) Solid Aluminum/C. 1µF(M) 16WV (Vert. Type)
Q'ty 1 2 1 1 1 2 2
4 VR2 4 SW1 4 C4 4 C7
7.) ASSEMBLY BLOCK
Ref. No. 7 1 7 2x 7 3x 7 4x 7 Sx 7 6x 7 7x
Symbol
No
Parts No.
Description
Schemati
Parts No. HEAT SINK BZ211241 ET219870 ET219881 ZS379350 ED551733 ZS608332 ZS447840
Description
Schematic No.
Q'ty:
1 2 2 8 2 2 4
BLOCK Heat sink Block Comp. Transistor 2SD586 (Q)(R) Transistor 2SB616 (Q)(R) Screw, pan head 3x6 Varistor STV 4H Screw, pan head 3x8, w/washer Tapping Screw #2 3x8(BR)
7 S6x MZ229138 Wire Bundle Holder N 108 (CEE, CSA) 2 35 1 7 S7x ZS447840 Tapping Screw #2 3x8 (BR) (CEE, CSA)
2
1
45 1 236 45 1 237 45 10 10
REAR PANEL BLOCK
78 7 9x 7 10x 7 11 7 12 7 1 3x 7 14 7 15 7 16 7 17 7 18
EZ224662 EZ224706 EZ224717 EZ225145 EW540123 EW604S85 EZ631945 SK652397 ZW652408 EJ240581 ZS52286S ASSEMBLY ZS32S495 ZS379350 ZW273802 ES224436 ES242346 ES239218 EC684720
Rear Panel A Rear Panel B (CSA) Rear Panel C (CEE) 2 throw AC Outlet AC Cord (CUL) 2.5M AC Cord BSI Strain Relief SR 4N 4 Knob OS 12 2 Washer (SPC) D3.2xlOxO.5t 4P Push Terminal Tapping Screw #2 3xl2(BR) BLOCK Tapping Screw #2 3x6 (BR) Screw, pan head 3x6 Toothed Lock Washer M3 Push SW, JP01 Push SW. JP17 (CEE) Push SW. JP01(TV 4) (CSA) Ceramic/C. CLD16YE 0.01µF(P) 500WV Ceramic/C. DP6600YM 0.01µF(P) 1.4 kWV (CSA) Nylon Rivet (FNPR) 3x5.5 (Black) Nylon Rivet (FNPR) 4x5 (Black) (CEE, CSA) Tapping Screw #2 3x6 (BR) (Black) 3P Fuse Holder (Large) B (Lupping Type) Rotary SW. SR26N C30K Power Trans. AM 2200T 1 Power Trans. AM 2200T 3 (CEE) Power Trans. AM 2200T 2 (CSA) Spring Washer M4 Nut M4, #1 Wrapping Terminal, 4P T S251 LED P.C Board LED SEL 105R Bottom Plate A Tapping Screw #2 3x8 (BR) Fuse ST 2 2A Fuse (SEMKO T Type) 1.2SAT 250V (CEE) Fuse ST 1 2A (CSA) Fuse (SEMKO T Type) 4AT (CEE) Fuse ST 1 4A (CSA) Fuse (SEMKO T Type) 1AT (CEE) Fuse 2 A 2 5 0 V Wire Band Plate (CEE.CSA) Fuse Holder, w/sticker AM 2S (CEE) Fuse Holder, w/sticker AM 2L(CSA) Earth Lug M4 (CEE) Toothed Lock Washer M4 (CEE) Nut M4 #l(CEE)
M2 5010 M2 5010 M2 5010 31 1 166 26 3 20 26 3 37 2 7 49 34 1 4 32 1 72
1 1 1 1 1 1 1 1 1 2 4
7 19 7 20x 7 2 lx 7 22 7 2 3x 7 24x 7 25x
25 5 221 25 5 224 25 5 222 24 5 61 24 5 58 2 7 54 2 7 58
9 11 1 1 1 1 1 1
7 2 6x ECS65896 7 27
ZW698308
7 28x ZW239578
7 29
ZS447761
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4 1 1 1 1 1 1 1 4 4 2 1 1 1 5 4 1 1 2 2 4 1 1 1 1 1 1 '
M
7 30x EJ214975
7 31 ES225055 BT225178 7 32 7 33x BT215054
40 1 104 25 6 95 38 4 433 38 4 447 38 4 446
7 34x BT2 15043
7 7 7 7 7 7 7 7 7 35x 36x 37x 38 39 40 41 x 42 x 43x
ZW273914 ZW413188 EJ551035 EA224515 ED656357 SP224831 ZS447840 EF277413 EF607550
32 1 36 M2 5019A 45 15 11 M2 5014 39 1 26 39 1 53 39 1 25 39 1 53 39 1 25 39 1 53 39 1 50 M2 5024 40 1 141 40 1 119
7 44x EF332098 7 45 x EF690996 7 46x EF552846 7 47x EF623103 7 48x EF563703 7 49 X TA239567 7 5 Ox EJ239580
7 5 lx EJ239477 7 5 2 X ZW273881 7 53x ZW273892
7 54x ZW413188
When ordering parts,please describe Parts Number, Descriptor, and Model Number in detail
8. PHOTO OF FINAL ASSEMBLY BLOCK
8.) FINAL ASSEMBLY BLOCK
Ref. No.
Parts No. Description
Schematic No. Q'ty
FRONT PANEL BLOCK
8-lx 8-2 8-3 BD211230 MZ224627 SE613888 Front Panel Block Comp. Push Button Bush A Button Escutcheon A M2-5004 CW-6021 1 8
ASSEMBLY BLOCK
8-4x 8-5x 8-6 8-7x 8-8 8-9 8-10 8-11 8-12 8-13 SZ64S243 ZS214997 BC224807 BC266782 ZW548010 ZS510344 SK224886 SK634410 SK22S090 SK646817 Circular Foot A CA-6014 Tapping Screw, #2 4x6 pan Cabinet A M2-5013 Cabinet C (CSA) M2-50I3 Spot Facing Washer MU-6028 Screw, binding head 4x12 Power Knob M2-5021 Push Button Knob J 91-5051 Vol. Knob M2-5015 Single Knob AA-5250 4 4 1 1 4 4 1 8 1 4
9. LIST OF INTERCHANGEABLE SEMICONDUCTORS As far as service is concerned, in case the original parts cannot be obtained, the interchangeable parts listed below can be substituted. Original Parts Parts No. ET2 19868 ET2 19881 ET539987 ET223446 ET2 19857 ET2 19870 EI697871 ED656278 ED2 19903 ED656357 ED551733 Interchangeable Parts Description Parte No. 2SA815(O)(Y) ET649078
j
Description 2SB560(E)(F) 2SB616(Q)(R) 2SC1312(F)(G) 2SC1517NP(G)(H) 2SD438(E)(F) 2SD586(Q)(R) LA3122 1S2472VE GP15D SEL105R STV-4H
Utilizing P.C Board M2-5018 M2-8018A M2-5019B M2-5018 M2-5018 M2-5019 M2-5018 M2-5018 M2-5019A
OM R
2SC1571NP(G)(H) 2SC1312(F)(G) 2SC1625(O)(Y)
ET223446 ET539987 ET649067
M2-5018A
1S2472 1R5BZ61 ED656278 ED650621
INDEX
Parts No. BA211252 BA211263 BA211274 BA211285 BA211432 BA270764 BA27077S BC224807 BC266782 BD211230 BT215043 BT21S054 BT225178 BZ211241 EA224515 EA233932 EA233943 EC219813 EC223413 EC474671 EC557155 EC557155 EC565896 EC684720 ED219903 ED551733 ED656278 ED656357 EF277413 EF332098 EF552846 EF563703 EF602550 EF623103 EF690996 EI697871 EJ214975 EJ225022 EJ239477 EJ239580 EJ240581 EJ5 14822 EJ551035 EJ592503 EJ650272 EJ698051 EO650823 ER219914 ER409814 ES219846 ES224436 ES224965 ES225044 ES225055 ES225088 ES239218 ES242346 ET219857 ET219857 ET219868 ET219868 ET2 19868 ET219870 ET2 19881 ET24S790 ET539987 EV219835 EV224943 EV224954 EV245823 EW540123 EW604S85 EZ224662 EZ224706 EZ224717 EZ225145 EZ631945 MZ224627 MZ229138 SE613888
Symbol
Ref. No. & No.
Parts No. SK224886 SK225090 SK634410 SK646817 SK652397 SP224831 SZ645243 TA239567 ZS214997 ZS32549S ZS379350 ZS379350 ZS417150 ZS447761 ZS447840 ZS447840 ZS447840 ZS510344 ZS522865 ZS608332 ZW239578 ZW273802 ZW273881 ZW273892 ZW273914 ZW413188 ZW413188 ZW548010 ZW652408 ZW698308
Ref. No. &
Symbol No.
Parts
No.
Ref.
No
Parts No.
Ref. No. & Symbol No.
Ref.No.&
Symbol N
2-1 3-1 4-1 5-1 6-1 2-2 2-3 8-6 8-7x 8-lx 7-34x 7-33x 7-32 7-1 7-38 2-4 2-5 6-C4 4-C7 2-C13 2-C10 4-C4 7-26x 7-25x 2-D2to5 7-5x 2-D1 7-39 7-42x 7-44x 7-46x 7-48x 7-4 3x 7-47x 7-45x 3-IC1 7-30x 5J1 7-5lx 7-SOx 7-17 2-6 7-37x 2-7 3-J1 3-J2 2-L1 2-R18.19 5-R1.2 6-SW1 7-22 4-SW1 5-SW1 7-31 3-SW2 7-24x 7-2 3x 2-TR4 2-TR6 2-TR3 2-TR5 2-TR7 7-2x 7-3x 2-TR1.2 4-TR1 6-VR1.2 4-VR1 4-VR2 2-VR1 7-12 7-13x 7-8 7-9x 7-10x 7-11 7-14 8-2 7-56x 8-3
8-10 8-12 8-11 8-13 7-15 7-40 8-4x 7-49x 8-5x 7-19 7-4x 7-20x 7-S5x 7-29 7-7x 7-41x 7-57x 8-9 7-18 7-6x 7-28x 7-21x 7-52x 7-53x 7-35x 7-36x 7-54x 8-8 7-16 7-27
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COMPOSITION OF VARIOUS P.C BOARD
MAIN AMP P.C BOARD M2-5018/A, LED P.C BOARD M2-5019A
M2-50I9 M2-50I9B M2-5022 M2-50I9C
E C B
E C B
2SCI570NP
2SB560 2SD438
POWER TRANS
M2-50I9C(
TR9b 2SB6l6(Q)(R)
TR8b2S0586(O)(R)
TR8 2 S 0 5 8 6 ( 0 ) ( R )
TR9 2SB6I6(Q)(R)
M2-50I9B
VR P.C BOARD'M2-5019B
WHT/CROSS BLK
M2-50I9
M2-5018
-5019
5022
VOLUME
LOUDNESS
BALANCE
HEADPHONE P.C BOARD M2-5019C
SPA
HEAD PHONE
TONE CONTROL P.C BOARD M2-5022
WHT/LONG B L U
M2-50I9B
LOW FILTER
HIGH FILTER
MODE