YORKVILLE CR12, Service Manual

2N5401

Q10B

1K

R133B

2N5551

E B C

2N5401

MPSA06

E B C

MPSA42

#

2u2

63V

C1B

1R

0.5W

R1B

MTP10N15L

MTP23P06

S

D

G

220K

R6B

10

CLIP_B

MC2

6

10

GNDREF_B

MC2

10

MT1

MT2

G

TRIAC_MAC224

Q48B

16v

10u

C45B

10R

R146B

33K

R145B

220K
R10B

7K5

R11B

10

2OHMLIMB

MC2

7

10

+17V

MC2

4

10

LVGND

MC2

3

4K7

R53B

4n7

C21B

10

-17V

MC2

2

MJE350

Q26B

10

SIGNAL_B

MC2

9

MJE340

Q28B

10

ILIMIT_B

MC2

8

D7B

P

MJL1302A

Q32B

CW

4K7

LIN

R115B

1R

R20B

1R

R21B

S

G

D

N

MTP10N15L

Q34B

16v

1W

D55B

1W

16v

D56B

0R10

5W

R113B

0R10

5W

R114B

0R10

5W

R120B

0R10

5W

R116B

MJ21196

Q36B

MJ21196

Q37B

220N

250V

C44B

MJ21196

Q38B

MJ21196

Q39B

A42

Q6B

10

TEMPB

MC2

5

MJ21195

Q40B

MJ21195

Q41B

10

RELAY_B

MC2

1

10K

R143B

MJ21195

Q42B

MJ21195

Q43B

P

MJL3281A

Q33B

SHEET   OF

YORKVILLE

NAME:

PCB#&VER:

MODELS:

SCH VERSION:

TITLE:

DATE:

2

3

M1185

CR12

M1185V1.SCH

APR/23/2002

POWER_AMP_B

1.10

P

S

G

D

MTP23P06

Q35B

100n

C25B

16v

330u

C7B

249R:1%

R106B

249R:1%

R107B

100n

C24B

BC560

Q13B

BC560

Q14B

BC560

Q15B

D23B

33078

1/2

(4=V-,8V+)

U1B

6

5

7

D9B

22u

10v

C8B

22u

10v

C9B

10R

R22B

17K8

R101B

BC560

Q16B

BC560

Q12B

SLEEVE

OUTPUT

1/4"_VERT_HI-CURRENT

B_OUT_POS

RED

EYEB1

39R

R108B

39R

R109B

1K

R110B

1K

R111B

120v

10u

C6B

MJE340

E CB

MJE350

D22B

100K

R137B

BC550

Q22B

1R

0.5W

R2B

BC550

Q18B

1R

R25B

16v

330u

C15B

100K

R147B

16v 22n

C27B

16v 22n

C28B

100v 1n

C29B

100v 1n5

C30B

200v 3N3

C31B

200v 3N3

C32B

3R9

2W

R122B

470R

R155B

10R

R100B

18V
500mW
D57B

D8B

14V

500mW

D58B

14V

500mW

D59B

MR854

D76B

MR854

D77B

MR854

X78B

2K7

1W

R104B

2N5551

Q8B

MR854

D79B

MR854

D80B

2K7

1W

R103B

VIEW

BOTTOM

B

E

YS6900
YS6927

3

9

470R

R154B

11

10

7

8

6

5

4

39R

R99B

220P

C47B

D19B

D18B

33078

1/2

(4=V-,8V+)

U1B

2

3

1

MJE340

Q31B

470R

R33B

470R

R34B

39R

R35B

47R

R36B

1K

R37B

1K

R38B

249R

R39B

249R

R40B

60K4

R41B

17K8

R42B

17K8

R43B

60K4

R44B

249R

R45B

249R

R46B

39R

R98B

1R

R48B

MJE350

Q30B

MR854

D81B

470R

R49B

470R

R50B

BAV21

D17B

D28B

68R

R97B

50V

4N7

C33B

D13B

D14B

D15B

D16B

100K

R148B

68R
R96B

75R

R112B

10V

33u

C19B

75R

R94B

BC550

Q23B

220R

R47B

4K7

R150B

A42

Q7B

BC550

Q19B

BC550

Q20B

BC550

Q21B

D12B

D11B

D10B

D27B

1B

BAV21

D20B

BAV21

D21B

BP-

2K

R93B

249R

R32B

249R

R31B

2K

R91B

330u

16v

C3B

33U

10V

C18B

47K

R30B

BP+

10K0

R29B

400V

22N

C34B

120v

1N5

C35B

1K

R90B

1K

R89B

120v

10u

C2B

10p

200v

C23B

1n

C36B

1n

C37B

3K01

R26B

X26B

BC550C

C B E

BC560C

75R

R24B

10K0

R23B

D25B

14K7

R58B

MT1

G

MT2

MBS4992

Q49B

14K7
R59B

D24B

MJL1302A
MJL3281A

E

C

B

1N4732A
1WATT
4V7

D67B

4K7

R61B

4K7
R62B

3K3

R63B

3K3

R64B

2R2

R65B

2R2

R66B

68R

R67B

10K0

R68B

249R

R69B

39R

R70B

10K0

R71B

47K

R72B

22R

R73B

39R

R74B

39R

R75B

15K

R76B

15K

R77B

3K3

R78B

150R

R79B

150R

R80B

2R2

R81B

2R2

R82B

249R

R83B

10p

200v

C22B

4K7

R88B

75R

R105B

BC560

Q11B

MJE340

Q29B

4K7

R87B

4K7

R86B

22u

10v

C13B

22u

10v

C12B

B_OUT_GND

BROWN

EYEB2

22u

25V

C11B

22u

25V

C10B

4K7

R85B

5K6

R84B

220N

250V

C46B

220R

R95B

MJE350

Q27B

1K5

R57B

1K5

R56B

5K6

R55B

4uH

L1B

5R6

5W

R117B

1K2

5W

R118B

1K2

5W

R119B

10R
R7B

2N5401

Q9B

1R

0.5W

R5B

10

9

8

7

6

5

4

3

2

1

#

DESCRIPTION OF CHANGE

VER#

DATE

MODEL(S):-

D

D

D

D

D

D

D

D

APR/23/02

JAN/2002

V

V

V

V

V

V

V

V

1.10

1.00

N

N

N

N

N

N

N

N

CORRECT_R155B,C43B

PILOTRUN

CR12

M1185.SCH_DATABASE_HISTORY

T

10K

THERM1

2

1

BAV21

D1B

BAV21

D4B

220P

.

C43B

100K

R139B

100K

R136B

100K

R138B

47K

R140B

100K

R135B

500mW

5V1

D30B

500mW

5V1

D29B

D6B

D5B

2N5401

Q45B

A06

Q47B

499K

R134B

1K91

R132B

64K9

R130B

100R0

R131B

27K

R14B

100K

R144B

BAV21

D3B

COLOR

A42

Q44B

47K

R92B

2N5551

Q46B

20K

R142B

1K54

R141B

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

LVGND

TP5

TP5

VH+

VH+

VH+

VH+

VH+

VH-

VH-

VH-

VH-

TP9

TP9

TP9

2OHMLIMB

CLIP_B

CLIP_B

TP1B

TP4

R+

TP10

TP10

TP10

PSGND

PSGND

+17V

+17V

+17V

VM+

VM+

VM+

VM-

VM-

VM-

O/PGND_B

O/PGND_B

TP3

-17V

-17V

-17V

TP6

ILIMIT_B

FP

FP

FP

+96V

-96V

+96V

+44V

+96V

-44V

-96V

-96V

+44V

-44V

-96V

-44V

+44V

+96V

TEST POINTS

TP11

TOP CHANNEL B

CHANNEL B VOLTAGE AMPLIFIER

4ma

AMP. B CLIP SENSE

2 OHM LIMIT SENSE

**ALL UNMARKED DIODES ARE 1N4148**

CR12-M1185

B OUTPUT

3mV ACROSS TEST POINTS 9 @ 10

OUTPUT

AMPLIFIER

Dc Protection

POWER AMPLIFIER BOARD

TESTPOINT:

Current Limit

Current Amplifier

WHEN THE AMPLIFIER IS COLD

BIAS ADJUSTMENT: ADJUST TRIM POT R115 FOR

BINDING POSTS

14ma

 60mA IDLE

4 WATTS

4 WATTS

RED

U:\M1185V11.PRN