Inter-m C-800, C-1200 Service Manual

http://www.inter-m.com

MADE IN KOREA

NO: 9007979650

SERVICE

MANUAL

P O W E R

AMPLIFIER

C-800/1200

1

Electrical Adjustment Procedure 1
Specifications

2

Electrical Parts List

3, 4

Top and Bottom View of P.C. Board

5, 6
Wiring Diagram 7
Block Diagram 8
Schematic Diagram 9, 10, 11, 12
Exploded View of Cabinet & Chassis / Mechanical Parts List

13, 14
Ass’y Drawing

15, 16

CONTENTS

IDLE CURRENT

A. Setting

Set the master volume minimum.

B. Connection

C. Adjustment

– Adjust SVR101, SVR201 so that the current through the R146, R149, R246, R249 become 10

milliampere.

– When that voltage across the Positive “TP” to Negative “TP” becomes 10 millivolt, the current

becomes 21 milliampere.

ELECTRICAL ADJUSTMENT PROCEDURE

TP1 TP2

R146

R246 R249

R149

SVR101 SVR201

AMP B D

VOLT METER

C-800 C-1200

Power Output Level

f=1kHz, THD+N≤5% (Typical)

STEREO RL=8Ω 250W+250W 350W+350W

RL=4Ω 400W+400W 600W+600W

BRIDGED RL=8Ω 800W 1200W

One Channel Driven

f=1kHz THD+N≤5% RL=8Ω 250W 350W
Frequency Response RL=8Ω, P.=1W 0dB+0.5, –1.5dB: f=15~55kHz
Power Bandwidth Half Power, THD+N≤0.1% 10Hz~40kHz

STEREO RL=8Ω

Total Harmonic Distortion (THD+N)

f=20Hz~20kHz, Half Power

STEREO RL=8Ω≤0.1%

RL=4Ω≤0.1%

BRIDGED RL=8Ω≤0.1%

Channel Separation Half Power RL=8Ω,

≥ 75dB

f=1kHz, ATT. max. Input 600Ω shunt
Residual Noise (DIN Audio Filter) ≤ –60dB: ATT min.
Signal-to-Noise Ratio DIN Audio,

≥95dB

Input 600Ω Shunt
Damping Factor RL=8Ω, f=1kHz ≥100
Slew Rate 8Ω Full Swing STEREO

±40V/µs

BRIDGED

Sensitivity (ATT max.)

Rated Power into 4Ω 1kHz

0±2dBm

Voltage Gain (ATT max.) 4Ω 1kHz 33±2dB 35±2dB
Input Impedance (ATT max.) ≥ 20kΩ (Balance/Unbalance)
Indicators Power (Red)

Protection (Mute) x 2 (Red)
Clip x 2 (Orange)
Signal x 4 (Green)

Protection Power SW ON/OFF muting

Heatsink Temp ≥ 100˚C (212˚F)
PC Limiter RL < 2Ω
Fan Circuit –50˚C (122˚F)–60˚C (140˚F)–

Low-Speed – Variable – Hi-Speed
Controls (Front) Power SW: Push up On/Push down Off

(Rear) Attenuator: Level

Mode SW: Bridged/STEREO

Low Cut SW, High Cut SW
Power Source AC 110V–240V, 50/60Hz
Power Consumption 550W 810W
Weight 13.8kg 18.4kg
Dimensions 482(W)

132(H) 369(D) mm

Connectors Input / Output: Barrier Strip

2 3

SPECIFICATIONS ELECTRICAL PARTS LIST

R140 R143 3079101275 RES ERD-2FCVG 101T 1/4W R FR 100
R169 R172
R175 R178
R240 R243
R269 R272
R275 R278
R138 - R139 3079101275

RES ERD-2FCVG 101T 1/4W R(C-1200 ONLY)

FR 100

R141 - R142 3079101275

RES ERD-2FCVG 101T 1/4W R(C-1200 ONLY)

FR 100

R238 - R239 3079101275

RES ERD-2FCVG 101T 1/4W R(C-1200 ONLY)

FR 100

R241 - R242 3079101275

RES ERD-2FCVG 101T 1/4W R(C-1200 ONLY)

FR 100
R120 - 121 3089100275 RES NFR 10 1/4W J R PHILKO FR 10
R220 - 221
R122 - 123 3089221275 RES NFR 220 1/4W J R PHILKO FR 220
R126 - 129
R222 - 223
R226 - 229
R130 - 131 3089332275 RES NFR 3.3K 1/4W J R PHILKO FR 3.3K
R230 - 231
R134 R137 3089479275 RES NFR 4.7 1/4W J R PHILKO FR 4.7
R168 R173
R174 R179
R234 R237
R268 R273
R274 R279
R132 - R133 3089479275

RES NFR 4.7 1/4W J R PHILKO(C-1200 ONLY)

FR 4.7
R135 - R136 3089479275

RES NFR 4.7 1/4W J R PHILKO(C-1200 ONLY)

FR 4.7
R232 - R233 3089479275

RES NFR 4.7 1/4W J R PHILKO(C-1200 ONLY)

FR 4.7
R235 - R236 3089479275

RES NFR 4.7 1/4W J R PHILKO(C-1200 ONLY)

FR 4.7
R114 - 115 3089820275 RES NFR 82 1/4W J R PHILKO FR 82
R214 - 215
C353 3408210261 CAP RSG 1000UF 35V SNAP 16 P 1000/35
C313 - C314 3419010345 CAP HC 10000UF 80V 10000/80
C313 - C314 3419510398

CAP AF HM 10000UF 100V 40P LUG(C-1200 ONLY)

10000/100
C316 3619474153 CAP POLY TM 0.47UF 250V 474/250V
C109 C209 3678050177 CAP M1 DM1 C 050D5 050D5
C108 C208 3678220177 CAP M1 DM 5C 220J5 220J5
C102 C202 3688471118 CAP MO SR22C 471JA 471JA
C105 C205 3698152198 CAP NPP POLY 152J 2J 0.0015M
AN106 4355755113 CON ASS

Y 4P (360MM TUBE) 4P

AN601 4355757008 CON ASS

Y 2P 2P
CN101 4428595003 LW5267/LWB0640/2.5MM-03P
CN201
CN102 4428595004 LW5267/LWB0640/2.5MM-04P
AN1 4428599003 WAFER YW025-03 YW025-03P
F352 5508412234 FUSE TS 20MM 1A/250V U/C/S T1AL/250V
RY101 5528007700 RELAY AZ971 - 1A DC24U CR323
RY201
Q104 Q111 2008206104-T TR PNP KTA 1268BL A 1268
Q204 Q211
Q102 - 103 2008206106-T TR PNP KTA2400G KEC KTA 2400G
Q202 - 203
Q105 - 106 2008606108-T TR NPN KTC2240BL (KTC 3200BL) C3200
Q110 Q126
Q205 - 206
Q352
Q210 2008606108-T TR NPN KTC2240BL (KTC 3200BL) 2SC 3200
R151 R156 3039100575-T RES MO 10 2W JR 10 2W
R251 R256
R150 R250 3039479575-T RES MO 4.7 2W J RADIAL 4.7 2W
VR101 3248347110-T RES SEMI 470 N6S25T1N IDLE 470B
VR201
C358 3409210071-T CAP AF RSG 10UF 50V 5 P 10/50
C106 - 107 3409210141-T CAP AF RSG 100UF 25V 6 P 100/25
C114 C206
C207 C359
C101 C201 3409247041-T CAP AF RSG 47UF 25V 5 P 47/25
C115 - 116 3409247131-T CAP AF RSG 470UF 16V 470/16
C354 - 357 3509472530-T CAP CE F 0.0047UF 50V Z 0.0047/50
C103 - 104 3609104122-T CAP MA 0.1UF 100V J SMALL 0.1M/100
C112 - 113 3609104122-T CAP MA 0.1UF 100V J SMALL 0.1M/100
C203 - 204 3609104122-T CAP MA 0.1UF 100V J SMALL 0.1M/100
C212 - 213 3609104122-T CAP MA 0.1UF 100V J SMALL 0.1M/100
C110 - 111 3609222120-T CAP MA 0.0022UF 100V J 0.0022M
C210 - 211 3609222120-T CAP MA 0.0022UF 100V J 0.0022M

Ref No. Part No. ValueDescriptionRef No. Part No. ValueDescription

Q107 Q207 2008005999 TR PNP 2SA 1546 NEC 2SA1546
Q109 Q209 2008405999 TR NPN 2SC 4001 NEC 2SC4001
Q115 Q215 2028107984 TR PNP 2SA 1306A(Y),KTA1659A(Y) KTA 1659A
Q121 Q123 2028117994 TR PNP 2SA 1492 W/ACC 2SA 1492
Q125 Q221
Q223 Q225
Q117 Q119 2028117994 TR PNP 2SA 1492 W/ACC(C-1200 ONLY) 2SA 1492
Q217 Q219 2028117994 TR PNP 2SA 1492 W/ACC(C-1200 ONLY) 2SA 1492
Q108 Q114 2028407990 TR NPN 2SC 3298A(Y),KTC4370A(Y) 2SC 4370
Q214
Q351 2028407990 TR NPN 2SC 3298A(Y),KTC4370A(Y) KTC 4370
Q120 Q122 2028427998 TR 2SC 3856 W/ACC 2SC 3856
Q124 Q220 2028427998 TR 2SC 3856 W/ACC 2SC 3856
Q116 Q118 2028427998 TR 2SC 3856 W/ACC(C-1200 ONLY) 2SC 3856
Q216 Q218
Q222 Q224
D7 2058100103 DIODE KBPC-2504(SB256)LUG TYPE PBU2504
D112 D113 2058100110 DIODE PS2010 PYUNG CHANG PS 2010
D212 D213
BD351 2058100987 DIODE BRIDGE (KPBP) 152 KPBP 152
D114 2058100996 DIODE RECTIFIER LT1N4006(4007) 1N 4006
D101 - D109 2058304100 DIODE IN4148 1N 4148
D201 - D209
D110 - D111 2058322100 DIODE 1SS145 ROHM ISS 142
D210 - D211
IC101 2118050410 IC TA7317P TOSHIBA TA7317P
PO101 2438007994 POSISTOR PTH 59F04 BE471TS 500
PO201
PO103 2438009992 POSISTOR P42 T70330 B04200MM 330
PO203
PO302 2438007995 POSISTOR PTH 9M04 BH 471TS 2F
L101 L201 2648099940 COIL INDUCTOR 1.2UM 1.2uH
R118 - R119 3002220953 RES CF 22K 1/5W F N 22K 1%
R218 - R219
R113 R213 3009100973 RES CF 10 1/5W J N 10
R106 R206 3009102973 RES CF 1K 1/5W J N 1K
R356
R155 R158 3009104973 RES CF 100K 1/5W J N 100K
R162 R255
R258
R355 3009122973 RES CF 1.2K 1/5W J N 1.2K
R105 R205 3009123973 RES CF 12K 1/5W J N 12K
R116 R216 3009182973 RES CF 1.8K 1/5W J N 1.8K
R154 R254 3009184973 RES CF 180K 1/5W J N 180K
R107 R207 3009221973 RES CF 220 1/5W J N 220
R152 R153 3009223973 RES CF 22K 1/5W J N 22K
R163 R164
R166 R167
R252 R253
R190 R290 3009224973 RES CF 220K 1/5W J N 220K
R101 R201 3009271973 RES CF 270 1/5W J N 270
R117 R217 3009471973 RES CF 470 1/5W J N 470
R102 R202 3009473973 RES CF 47K 1/5W J N 47K
R100 R104 3009561973 RES CF 560 1/5W J N 560
R108 R200
R204 R208
R110 - 111 3009683973 RES CF 68K 1/5W J N 68K
R112 R124
R125 R210
R211 R212
R224 R225
R103 R203 3009911973 RES CF 910 1/5W 910
R103 R203 3009751973 RES CF 750 1/5W(C-1200 ONLY) 750
R161 R165 3009822973 RES CF 8.2K 1/5W J N 8.2K
R146 R149 3049478783 RES CE 0.47 5W J T HAN NAE 0.47 5W
R170 - 171
R176 - 177
R246 R249
R270 - 271
R276 - 277
R144 - R145 3049478783

RES CE 0.47 5W J T HAN NAE(C-1200 ONLY)

0.47 5W

R147 - R148 3049478783

RES CE 0.47 5W J T HAN NAE(C-1200 ONLY)

0.47 5W

R244 - R255 3049478783

RES CE 0.47 5W J T HAN NAE(C-1200 ONLY)

0.47 5W

R247 - R248 3049478783

RES CE 0.47 5W J T HAN NAE(C-1200 ONLY)

0.47 5W

AMP B’D (4005185301)

0dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power)
* Using reactive 2Ω speakers at high power levels may cause overheating, excessive power consumption, and shutdowns.

Please note that below 2Ω the PC limiter will work. Before using 2Ω speakers in a real application, test the system completely.

* Specifications and design subject to change without notice for improvements.

4

Q502 Q504 2008206105-T TR PNP KAT 1268 A1268
Q506 Q508
R501 - 502 3009152973 RES CF 1.5K 1/5W J N 1.5K
R507 - 508
R513 - 518
R523 - 526
R531 - 532
R503 R505 3009223973 RES CF 22K 1/5W J N 22K
R509 R511
R519 R521
R527 R529
R504 R510 3009221973 RES CF 220 1/5W J N 220
R520 R528
R506 R512 3009203973 RES CF 20K 1/5W J N 20K
R522 R530

C601 3409210171-T CAP AF RSG 100UF 50V 8P 100/50
C602 3409210141-T CAP AF RSG 100UF 25V 6P 100/25
CN601 4428595003 LW5267/LWB0640/2.5MM-03P 3P
D601 D604 2058100996 DIODE RECTIFIER LT1N4006(4007) 1N4006
D602 2058502240 DIODE ZENER UZ-24BM(23.1,25.5) UZ 24BM
F601 5568224533 CIRCUIT BREAKER W28-XQ1A-10A

CIRCUIT BREAKER
PO601 - 602 2438200515 THERMISTOR POWER NTC 5D-15 TH5D-15
Q601 2028406113 TR NPN KTD 2058Y(D880Y) D2058
R603 3009822973 RES CF 8.2K 1/5W J N 8.2K
RY601 5528009993 RELAY VH-24H O.E.G/TAKAMISAWA HR-CR6

PT1 2828062300 TRANS POWER C-800 120V(E)
PT1 2828062310 TRANS POWER C-800 220V(C)
PT1 2828062320 TRANS POWER C-800 230V(B)
PT1 2828062330 TRANS POWER C-800 240V(D)
PT1 2828062200 TRANS POWER C-1200 120V(E)
PT1 2828062210 TRANS POWER C-1200 220V(C)
PT1 2828062220 TRANS POWER C-1200 230V(B)
PT1 2828062230 TRANS POWER C-1200 240V(D)
F1 5568224833 CIRCUIT BREAKER 1.5A C-800 120V(E)
F1 5568223733 CIRCUIT BREAKER 8A C-800

220-240V(C,B,D)
F1 5568224433 CIRCUIT BREAKER 20A C-1200 120V(E)
F1 5568224533 CIRCUIT BREAKER 10A C-1200

220-240V(C,B,D)

Ref No. Part No. ValueDescriptionRef No. Part No. ValueDescription

C301 C302 3509104530-T CAP CE F 0.1UF 50V Z 0.1/50
C305 C306
C303 - 304 3409210071-T CAP AF RSG 10UF 50V 5P 10/50
C307 - 308 3408247171 CAP RSA 470UF 50V SNAP 13P 470/50
C309 - 310 3409222171-T CAP AF RSG 220UF 50V SG 10P 220/50
C311 - 314 3509103450-T CAP CE 0.01UF 500V Z 0.01
CN301 4428595003 LW5267/LWB0640/2.5MM-03P 3P
D301 - 304 2058100996 DIODE RECTIFIER LT1N4006(4007) 1N4006
F301 - 302 4458999110 FUSE CLIP 5*20 630mA
IC301 2168640988 IC 7815 SAMSUNG 7815
IC302 2168640987 IC 7915 SAMSUNG 7915

AN401 4355761590 CON ASS

Y 2P 2P

AN402 4355761425 CON ASS

Y INPUT 2P(3P) 3P

AN403 4355754804 CON ASS

Y 2P-3P 2P
C401 - 402 3529560311-A CAP CE SL 56PF 50V J AXIAL 56P
C418 - 419
C403 - 404 3409247033-T CAP CE SE 47UF 16V 3*5 47/16
C409 - 410
C416
C405 - 406 3609104122-T CAP MA0.1UF 100V J SMALL 0.1(M)
C420 - 421
C407 - 408 3609473120-T CAP MA 0.047UF 100V 0.047(M)
C422 - 423
C411 C426 3609153120-T CAP MA 0.015UF 100V J 0.015(M)
C412 C427 3609333120-T CAP MA 0.033UF 100V J 0.033(M)
C413 - 414 3539103521-A CAP CE YF 10000PF 25V Z AXIAL 0.01
C417
C424 - 425
C429 - C431
C415 3529220311-A CAP CE SL 22PF 50V J AXIAL 22P
D401 - 404 2058304100 DIODE 1N4148M 1N4148
IC401 - 405 2118010590 IC NJM4558D JRC 4558D
R401 - 404 3002150953 RES CF 15K 1/5W F N 15K 1%
R420 - 423
R405 R408 3009180973 RES CF 18 1/5W J N 18
R411 R415
R419 R424
R427 R430
R434
R406 R409 3002270953 RES CF 27K 1/5W F N 27K 1%
R425 R428
R407 R410 3002560953 RES CF 56K 1/5W F N 56K 1%
R426 R429
R412 - 413 3009101973 RES CF 100 1/5W J N 100
R431 - 432
R414 R433 3001100953 RES CF 100K 1/5W F N 100K 1%
R416 - 418 3003470953 RES CF 4.7K 1/5W F N 4.7K 1%
R435 - 436
SW401 4618999910 SW SS65010-0203-9H-FN Low cut
SW403
SW402 4618999910 SW SS65010-0203-9H-FN High cut
SW404
SW405 4625995610 SW SSSU022NB011 (9MM) -LG Bridge mono
VR401 - 402 3228083020 VR RK0971110A0113B(ROA33) 10KB

AN504 4355754618 CON ASS

Y 2P RED (390M TUBE) 2P
AN501 4355754715

CON ASS

Y 2P-WHITE(300MM TUBE) 2P

2P
AN502 4355755017 CON ASS Y 4P (360MM TUBE) 4P
AN503 4355761814 CON ASS

Y 3P(4P) 3P
C501 - 504 3409222871-T CAP AF RSG 0.22UF 50V 5P 0.22/50
D501 - 502 2058304100 DIODE 1N4148M 1N4148
LD501 2300052105 LED LTL-307G-041A LITEON SIGNAL 1
LD502 2300050105 ED LTL-307E-041A LITEON CLIP
LD506
LD504 2300050105 ED LTL-307E-041A LITEON PRO
LD503
LD505 2300050105 ED LTL-307E-041A LITEON BRIDGED
LD507 2300050105 ED LTL-307E-041A LITEON POWER
LD508 2300052105 LED LTL-307G-041A LITEON SIGNAL 2
Q501 Q503 2008606104-T TRNPN KTC 3198Y C3198Y
Q505 Q507

POWER B’D (4005183750)

INPUT B’D (4005183700)

LED B’D (4005183720)

SW B’D (4005183730)

POWER TRANSFORMER & CIRCUIT BREAKER

5

TOP AND BOTTOM VIEW OF P.C. BOARD

WIRING DIAGRAM

6 7

8

BLOCK DIAGRAM

9 10

SCHEHATIC DIAGRAM

1211

13 14

EXPLODED VIEW OF CABINET & CHASSIS/MECHANICAL PARTS LIST

S6

14

11

10

S4

S6

12

S5

S3

13

S5

15

S1

24

17

S6

23

S6

S3

S3

HANDLE 3 SIZE

SCREW BM 3X6N

SCREW #2BTC 3X10B

HEAT SINK (UP)

SCREW BM 4X30B

SCREW BM 3X6B

SW POWER

BRACKET PCB

B.K.T HEAT SINK

LENS LED

MAIN CHASSIS

HEAT SINK (DOWN)

POWER TRANS

DIODE BRIDGE

INPUT B'D

POWER B'D

B.K.T V/R

AC INLET

TOP COVER

SCREW #3BTC 3X6B

SCREW #3BTC 4X8BK

ASS'Y SCREW PM 4X18B

HEX MSPW 3X16Y

SCREW BM 4X12B

S9

S6

S7

S8

16

S5

S3

S2

S4

24

23

S1

22

17

20

18

21

CIRCUIT BREAKER

13

15

14

12

10

11

DC FAN

PCB AMP B'D

5

7

6

3

4

2

9

8

HANDLE BKT

8009130064

8109230103

8109340083

8095996930

8159340103

8

1

4

10

046123495021

4448997410

6505932710

4005183700

4005183750

4005183730

8009140303

8009130063

5568223733

8109330063

8099130161

6

1

1

22

12

4

26

1

1

4

1

1

1

7308998010

7502089520

7308998110

2058100979

6505934810

6535995010

7502089420

8523997210

4625996611

046121676111

2

3

1

1

1

1

1

C-1200

C-800

1

2

1

2

1

1

1

7

PARTS NAME

FRONT PANEL

C-800/1200 EXPLODED VIEW DWG PARTS, LIST

N0

1

048602966612

048602966611

PARTS NO

1

1

Q'TY

C-1200

C-800

REMARK

1

2

4

5

6

8

9

7

18

19

20

21

22

25

S3

S3

26

25

4

048603995230

6503986830

C-1200

C-800

1

046121676115

LED B'D

LED SPONGE

6735991010

3

1

16

C-800

C-1200

2828063010

2828062910

SW B'D

19

OUTPUT B'D 4005183710

1

4005183720

4005185300

FOOT

6735991210

3

SPONGE FAN

6733996110

1

26

S2

S2

S9

S9

S7

S8

15 16

SIGNAL

CLIP

PROT

POWER

ON

OFF

SIGNAL

CLIP PROT

C

1200

POWER AMPLIFIER

POWER

PROT

CHANNEL 1 CHANNEL 2

10A / 250V

PUSH TO RESET

~AC INPUT

S

N

2

0

-dB

1

5

1

0

6

3

0

2

5

3

0

4

0

2

0

-d

B

1

5

1

0

6

3

0

2

5

3

0

4

0

INPUTS

GND

GND

40Hz

OFF 80Hz

LOW CUT

5kHz

OFF 10kHz

HIGH CUT

40Hz

OFF 80Hz

LOW CUT

5kHz

OFF 10kHz

HIGH CUT

CHANNEL 2 CHANNEL 1

GND

GND

BRIDGED

STEREO

MODEL

POWER AMPLIFIER

NO. C-1200

OUTPUT

CHANNEL 1CHANNEL 2

BRIDGED MONO

MODE

132

280

440

482

2

4

11

10

6789

13

5

TOP COVER

046121676113

1

1

MAIN CHASSIS

046121676114

046121676115

046121676116

046121676117

1

2

SW POWER

4625996611

1

3
4

5

1

046123495010

1

046121676111

1

1

046121676112

HANDLE(3SIZE)

048603995230

2

FRONT PANEL

048602966612

1

046121676118

1

C-800

C-1200

C-800 (KOREA)

C-800 (B,C,R 230V)

C-800 (E 120V)

C-800 (D 240V)

C-1200 (KOREA)

C-1200 (B,C,R 230V)

C-1200 (E 120V)

C-1200 (D 240V)

1

1

RemarkNo.

Description Part No

Q'ty

4448598810

1

5568224533

4465996204

4618999510

3228009017

1

6
7

2

8
9

AC INLET

CIRCUIT BREAKER

10
11

SCREW TERMINAL 4P

SW SLIDE

CONTROL KNOB

SCREW TERMINAL 6P 4465996206

2

5

2

048602966611

1

ASS’Y DRAWING