SRVICE| / MANUAL SOLID STATE DC STEREO POWER AMPLIFIER M-12EXPLODED VIEW 1. UGLOO9 Bonnet (J) (S) UG1020 " qu) 2, UALO36(6480) Chassis vAl047(6481) 3, WOLO43 Side Panel 4. BELOLD Heat. Sink 5. YAA30C06 Screw 3x6 10. vare BELOG3 WGLO16 uc1003 T2232 PT2233 T2234 cEL41L Heat Sink Pilot Bonnet Power Trans. (J) my " " 6) Elretrolytic x 2 LO000UF x 2Semi-fixed VR Adjustment (1) AVR Output Voltage / PB-1132 Connect a DC volt meter (100V meter) in between the printed terminals of silk-printed "5,6,7,8" and the ground to confirm that the output is +58V +5v. Also confirm that the value should be +58V+5V even in case that the mains voltage is decreased by 10%. (The value should be -58V on terminals "5,8" and +58V on "6,7". (2) Idling Current / PB-1133 (1k(B) RT302) Detach the punched bottom plate to find the gray wire fixed on No.2 or 3 lug-terminal. Detach the gray wire from the terminal and connect a DC ampere meter to the wire and adjust the RT302 to obtain 60mA +10/-OmA reading on the meter 5 minutes after turning the power switch on. See Fig. 1. (3) DC Offset | PB-1133 (500-ohm(B) RT301) Connect a DC volt to the speaker terminals and adjust the RT301 to obtain 0V!20mV reading on the meter 5 minutes after turning the power switch-on. See Fig. 1. (4) The gray wires should be soldered again onto the lug-terminals after Idling Current adjustment. But in that case the wires should be entirely discharged before soldering. (Bat sink SIDE) \ Dprownl ray / 0 = ° S nono o 1 ° U (BOTTON SIDE) U 2 Vo LEAD cray LEap~ \\ © Os LEAs ee,Replacement Remarks Capacitors: Resistors: “type: Parts List Ceramic, E...,.Electrolytic, MY....Myiar, G.....G Capacitor Styrol,T.....Tantalum MI....Mica,’ MP....MP capacitor O11 capacitor, TRIM.....Teimmer capacitor, AC....AC Capacitor Electrolytic Bi-Polar type 410%, 25%, 1/4, unless specified otherwise (s) Model for north European countries (U).....Model for U.S.A. and CANADA (2)....,Standard model () Model for JAPAN syMBoL | Stock Loca-| |syapo. | stock Loca~ frag io pescription | Lore] [SW as bescrtPrion | Lore R1oL xpoo7L | 2.2 lp1o1 100003, 1N4003 ioz woooy. | 2.2 102 70093 _| 1N4003 103 R00037 | 3.3K 103 700093 —_| 1N4003 aos | xpoo29 | 22K 10 — |r00093 | xaos ed RB0230 100K 105 T0117 02B2-3.3 106 RBO2G2 330K 106 ‘T0116 182075 a RB0232 | 120K 107 10116 | 182075 108 mp0232—— | 1205. 108 rpo116 =| 182075 109 RB0238 | 220K 109 rpo116 | 182075 110 RB0238 | 220k 110 1DO116 182075 ped RBO190 | 2.2K ql T0116 =| 152075 uz RBOL9O | 2.2K a2 rpoo1a =| 1K186FM-1 113 reo11a =| 2.2 113 mpoois | 1K1e8rM-1 14 zpos =| 2.2 114 rpo0i18 | 1K188EM-1 1s 0028 | 15K us To0018 | 1K188FM-1 116 xp0028 | 15K 116 Tp0117 | 0282-3.3 17 po029 | 12K 47 rpo1is —_| 182075 18 00029 | 12K us roo116 — | 182075 ng RDOO37 3.3K ug ‘twO1l6, 182075 120 RDOO32 8.2K 120 ‘TDOLLE 182075 la. 00017 ‘| 100K 122 Rp0017— ‘| 100K. FOL BE0206 | 5x20 0.5a(T)(S) 123 po016 =| 120K. yon BFO308 | MFSINR-0.5A(J) 101 BFO308 — | MFS1NR-0.5a(J) C103 ce0078 «= |100) 16V EB 102 BF0206 | 5X20 0.5A(T)(S)] 104 e007? J47u LOVE 102 BFO308 — | MF51NR-0.5A(3) 105 ceooss 4.71 25V E 102 BFO308 | MF51NR-0. 5A(J) 106 csooss = [4.7y 0 2SV E 107 croo77 J47u LOVE joun R220 | 2sa942 102, mRo22i_—_| 2sc2089 103 10221 ‘| 28¢2089 104 TRoz19_—_| 28c1959 105 tro219 ‘| 28c1959 106 7RO220 | 28A942 107 RO220 | 2sa942 108 R021 | 28¢2089 109 mRo221-— | 282089 110 rro22i | 28c2089 a ro221 | 28¢2089 uz 7Ro220 | 2Sa942 113 rRoz19__| 28c1959PBol132 syugot | stock Loci-|}syueor. | stock : Loca xO io pescaterion | TOC in ae pescrieioN | Toy R201 jrvo362 | 220. 1/2 2 ceo10s = | 100uF63V E 202 rvo362. | 220 1/2W 212 cz0108 =| 100yF63v E 203 Rv0362 | 220. 1/2W 213 cro069 | 100,F 10V E 204 RD0362 | 220 1/2" 214 cE0069 = | 100uF-«10V E 205 RpoLI1 «=| 33K 1/20 215 ceoo69 =| 100uF10V E 206 Rpo111 =| 33K 1/20 216 czo069 = | 100uF LOVE 207 rooi. =| 33K 1/2W 208 Rpo111 =| 33K 1/2 201 rr0177— | 28525 209 neo1s2 | 150, 202 rRo177— | 280525 210 ng0162 | 150 203 TRO176 | 2SB595, 2iL RBo162 | 150 204 TROI76 | 288595 212 rw0162 | 150 205 7R0221 | 28¢2089 213 RB0234 | 150K 206 R0221 | 28¢2089 214 RB0234 | 150K 207 7R0227 | 28941 21s, RB0234 | 150K 208 R0227 | 28A941 216 RB0234 | 150K 209 RO227 | 28A941 217 RB0222 | 47K 210 TRO227 | 2SA941. 218 Rg0222 | 47K 2 rRo221 ‘| 282089 219 RB0222 | 47K 212 rro221 | 2sc2089 220 50222 | 47K 213 reo221 ‘| 28¢2089 221 Rp0028 | 15K 21h mro221— | 28c2089 222 npooz8 =| 15K 215 10227 | 28A941 223 Rp9028 | 15K 216 mR0227 | 2Sa941 226 Rp0028 | 15K 225 RB0220 | 39K D201 rp0008 | 14004 226 30220 | 39K 202 rp0004 | 1N4004 227 30220 | 39K 203 rooo0 ‘| 14004 228 RB0220 | 39K 204 10004 | 1N4004 229 RB0198— | 4.7K 205 rp000s =| 14004 230 RB0198 | 4.7K 206 rp0004 =| 14004 231, rgoiss | 4.7K 207 mp000% — | 1N4004 232 rpoigs =| 4.7K 208 rp0004 | aN4004 209 ‘70060 201 ceo111 | 100.F 100v & 210 70060 202 E0111 | 100uF 100V E aul T0060 203 ceo111 | 100uF 100v E 212 ‘10060 204 cro111 | 100:F lov E 205 cq0613. | 0.1uF 100v Q F101 BFO206 (s) 206 cq0613 | O.1NF 100v Q BF0308 Q) 207 90613 | O.1uF 100V Q BFO308 wu) 208 690613. | 0.1uF 100v Q 392: [BFO206 (s) 209 cE108 | 100uF 63 B BFO308 Ga) 210 ceo108 | 100uF _63V_B BFO208 @ ywsympol | stock Loca- No. a Description | ToOy R301 Rp0036 | 3.9K 302 Rp0007 — | 680K 303 Rp0028 | 15K 304 Rp0028 | 15K 305 Rp0022 | 47K 306 Rp0032 | 8.2K 397 Rs1054 | 68 208 RD0017 | 100K. 309 Rp0110 | 39K = 1/20 310 Rp0110 | 39K - 1/20 31 Rp0056 | 100 312 xv0046 | 680 313 Rp0069 | 10 314 Rp0069 | 10 315 Rs0087 | 1K 316 RpOw2 =| 18K - 1/21 a7 Rsoo71 | 470 318 Rsoo71 | 470 319 RNo369 | 120 320 Roo — | 33K = 1/2W 321 Rpoo71 | 2.2 322 xs0067 | 150 323 x00056 | 100, 324 np0052 | 220 327 Rs0043 [10 328 Rs1569 | 120 - 1/2" 329 RS1569 | 120 ~ 1/20 330 RGOOS4 «=| 4.7 ~ aw 331 RNO404 =| 8.2K 332 RNoo8 =| 12K 333 51534 [10 - 1/2" 334 xp0026 | 22K. 335 RD0034 =| 5.6K 301 cyo12s — |47p soo 302 ¢Qo123, | 0.027: sov.q 303 cqos0s =| 2.21 100v.q 304 cMo119 | 33p = Saov tt 395 cwo119 | 33p Sov 306 M0134 | 1100p soov 4 307 cqaso9 =| 0.47 100v Q 308 cqoso9 0.47: 1a0v Q 309 ceo103 = |100; 63V E 310 ceo103 | 100, 63V E an 90253 Jo.1y ~—S0V.Q 312 co0613 |0.1u 100v 9 313 cq0609 | 0.47u 1oov Q 314 cq0609 |0.47 100v Q 315 cro108 = |100:63V E 316 ceo108 = |100; 63V E 37 ceo400 © |100) Lev E (B.P) 318 60126 = |0.01u Sov Q 319 cyo106 = |10p = sov Iav301 10068 | 50028) 302 RTO01S | 1K(2) (B) SYMBOL NO. Q301 302 303 304 305 306 307 308 309 310 3 D301 302 303 1301 [ri.302 stock No. ‘Te014 ‘TROL65 ‘TROL6S ‘TROL92 ‘TRO192 ‘TROL96 ‘TROL6S ‘TRO196 ‘TRO196 TRO209 FR0210 Tv0003 ‘TvO004 ‘70020 LALL77 Ay0032 DESCRIPTION LocA- TION 1¢ DML-O1 2SC1775a 28C17750 288648 2SB648 28p668 28c1775A 280668 280668 28¢2238 280968 KB-165 KB-265 STV-3H Choke 6415 Relay DC/12VMe ae adCHASSIS _UNIT REAR-PANEL UNIT IsymBoL | STOCK oca-| | symBoL | stock LOcA~ noe NO, pescrrprion | Gq srt nor pescrrprion | 10Gy lRoon Rc0032 | 0.18 - sw 007 | cqo609 0.471 Lov Q 002 C0032 0.18 - Sw 008 —_ | cqo609 0.471 L00v Q 003 R¢0032 | 0.18 - Sw 004 RG0032 | 0.18 - SH lvroo. =| Rvou71 20KB 005, RG0032 | 0.18 - sw 002 | RvO171 20KB 006 Rc0032 | 0.18 - Sw 007 RG0032 «| 0.18 - SU lswoo. |sso014 | Slide sit 008 RG0032- | 0.18 ~ Sw 002 | ssoo1s Slide sw (J) 009 Rs0043 | 10 ss0015 Slide sw (u) 010 Rs0043 | 10 880016 Slide sw (Ss) oll Rs0043 | 10 012 Rs0043 | 10 F004 =| BFO213 4a Fuse (S) 013 Rs0043 | 10 BFO302 4A Fuse (J) 014 Rs0043 | 10 BFOO82 5A Fuse (U) 015, Rs0043 | 10 00s = | BF0213 4A Fuse (8) 016 s0043 | 10 BFO320 4A Fuse (J) 017 RG2230 6 20H (3) BFO082 5A Fuse (U) lcoor cv0006 = | 0.022 250v U (s) cu0033 | 0.022 250v U @) cv006s =| 0.022 voy 4 Cu: 002 cuoos6 §=— | 0.022 250 U (s) cyoo0s §=—-}. 0.022 250v U Qa) cuooss | 0.022 120 U Ww) 003 cuooes §— | 0.0221 250v U «s) v0033 | 0.022u 250v U Q) cuo0ss | 0.022u 120v U «uy lqoo1 rro244 | 258681. 002 7R0244 | 2sB681 003 rro245 | 28551. 004 rro24s | 280551. 005, rro244 | 288681. 006 TRO244 = | 28B681 007 7R0245 | 2sD551. 008: rR0245 | 28551. poor 7p0110 | SSvB40-F 002 T0110 | SSVB40-F lFoo1 BF0082 [5A Fuse (J) BFO082 |5A Fuse (U) BFO212 3.15 Fuse(D) 002 BFO082 |5A Fuse (J) BF0082 | 5A Fuse (U) BFO212—-|3.15A Fuse(S)M-12 SPECIFICATIONS Power Outpat: ‘BOW minimum continuous per channelinto B-ohmloads both channels driven atany frequency from 20H2to 20,000H2 with no more than 0.006% total harmonic distortion. Rated iM: ‘no more than 0.006% [8 ohms, SOW, 6OHZ: 7kHz = 4:1) Frequeney Response: DC. 100,000H2 within -14B) input Sensitivity: 600mV_ inputimpedance: __20kohms Signal to-Noise Ratio better than T10d6 (HF A welghted, nputshort-cweulted) ‘Channel Separation: — better than 80dB (20H2. 3OkH2) DampingFactor 150 (8 ohmsat 1KH2) Protection Ciroults: Speaker Protection Ciroult by sensing DO drift, Overcurrent Protection Circuit. ‘Additional Features: Input Capacitor IN/OUT Selector, Attenuator forboth channels Power Consumption’ 320W/(6 ohms, at maximum output) 400VA (CSA rated) Dimensions: “436{W) x328(D] x95(HImmN (17-3/16"«12-15/16" x3-3/4") Weight: Not 14.5kgs (31.91bs] Gross 16.5kgs (36.3 1bs. Specifications and appearance and design are subject to possible change without notice.‘ULTIMATE HIGH FIDELITY a VOLTAGE REGULATORS “Dogo 88 “Bh9-44 le ow WeRWCH) RCH) i i I i \ I i i I i i I Sts }] FY |. | POWER AMPLIFIER. acc