YORKVILLE AP1212, Service Manual

249R

FP

R41L

BC550

Q11L

BC550

Q7L

BC560

Q8L

BC560

Q12L

11R3

R27L

FP

11R3

R28L

FP

4K7

R31L

150R

R32L

CW

IDLE

4K7

RT1L

470p

C14L

680p

C13L

D10L

BC550

Q10L

475R

R46L

FP

D12L

S

G

D

N

MTW10N40E

Q13L

BC560

Q9L

31K6
R36L

2K87

D11L

2K87
R34L

1u

63V

C12L

1u

63V

C15L

31K6

R42L

31K6

R35L

P

S

G

D

MTW14P20

Q14L

1K5

10W

R64L

1K5

10W

R66L

470u

63v

C19L

20v
1W
ZD6L

270R

0.5W

R67L

100u

25v

C23L

500mW

10v

ZD1L

39R

R26L

1K

R37L

16v

1n

C11L

500mW

10v

ZD3L

D16L

D21L

3K3

R24L

27V
500mW
ZD5L

36K

R13L

FP

180R
R51L

25v 22n

C16L

36K

R50L

FP

4N35

U3L

1

2

3

4

5

6

100K
R54L

3K3

R55L

3K3

R45L

249R

FP

R58L

XXXR

FP

475R

R56L

FP

220K

R44L

3R3

R57L

3R3

R53L

BC560

Q15L

BC550

Q16L

10v

47u

C18L

10v

47u

C21L

D24L

1K

FP

R47L

D20L

1K5

R23L

BC560

Q6L

D22L

D23L

D18L

25v 22n

C17L

D19L

D14L

36K

R62L

7K5

R63L

180R
R59L

D15L

7K5

R49L

36K

R48L

D25L

BC560

Q5L

BC550

Q2L

D9L

220R

R21L

330R
R19L

BC550

Q3L

BC550

Q4L

3K3

R18L

100R

R12L

100R

R16L

BC550

Q1L

620R

R20L

100R

1W

R22L

100R

1W

R25L

D4L

D3L

4u7

63v

C6L

150v

15n

C3L

100n

C4L

2K87

R17L

6K98

R15L

6K98

R14L

2K05

R11L

6K98

R10L

6K98

R9L

25v 470p

C8L

220p

C10L

47K

R8L

1/2

TLO72

U1L

2

3

1

36K

R68L

1/2

TLO72

U1L

6

5

7

BAV21

D13L

180R

R70L

6K98

R4L

10v

47u

C5L

6K98

R6L

6K98

R5L

6K98

R3L

2K05

R1L

2K05

R2L

330R
R69L

4N25

U4L

1

2

3

4

5

6

4N25

U2L

1

2

3

4

5

6

1K

R7L

63V

47n

C24

47p

C9L

1/2_MW2

5

6

3

4

D2L

TP1L

1

TP8L

8

TP7L

7

TP4L

4

TP3L

3

TP2L

2

TP6L

6

TP5L

5

EY4

1/2_MW4

9

8

7

6

5

100n

C1L

100n

C2L

D1L

1n

C7L

*

2K

R39L

*

2K

R40L

20v
1W
ZD7L

100u

25v

C20L

270R

0.5W

R65L

470u

63v

C22L

470K

R22

D2

D4

NC

COM

NO

RLY1

3

2

4

NC

COM

NO

RLY1

6

7

5

1N4004

D1

7K5

R16

C+

C-

RLY1

1

8

100u

25v

C5

A06

Q3

BC550

Q4

BC550

Q6

15K

R11

1K

R12

1M

R15

220K

R14

D3

4u7

63v

C6

100K

R20

100n

C8

100K

R19

1M

R23

D5

470K

R21

TP1

TP3

TP2

3

MW1L

8

7

6

5

4

3

2

1

100K

NTC1

2

EY1

8

7

6

5

4

3

2

1

MW1R

100n

C7

470u

63v

C2

470u

63v

C1

2N6045

Q1

BDX54C

Q2

18v

500mW

ZD1

18v

500mW

ZD2

8K2

0.5W

R5

8K2

0.5W

R2

1K

R3

1K

R6

10R

R7

10R

R8

100u

25v

C3

100u

25v

C4

15K

R18

500mW

10v

ZD3

MJE340

Q5

8

7

6

5

4

3

2

1

MW1R

MW1L

8

7

6

5

4

3

2

1

9

8

7

6

5

4

3

2

1

MW4

MW2

8

7

6

5

4

3

2

1

1

6

8

7

4

3

2

1

1/2_MW4

9

TP9L

BC550C

CBE

BC560C

EBC

MPSA06

ECB

MJE340

BD649

BDX54C
2N6045

E

C

B

MTW10N40E

S

D

G

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

#

DESCRIPTION OF CHANGE

VER#

DATE

MODEL(S):-

D

D

D

MAR/17/97

SEP/19/96

SEP/02/96

.

.

AUG/16/94

JUN/22/94

V

V

V

V

2.40

2.30

2.20

.

V

V

V

N

N

N

N

CORRECTION_R17_1/8W_FLAMEPROOF

PC#5095_R37L/R_2K49-->1K

PC#4655_DELETE_R9,R10,EY2,EY3

100P->220P

->47P--R31L/R_150R->4K7_C10L/R

PC#4638_C9L/R_100P->47P_C14L/R_680P

PC#4529_BD652-->BDX54C

AP1212

M1049.SCH_DATABASE_HISTORY

YORKVILLE

NAME:

MODELS:

SCH ISSUE:

TITLE:

DATE:

.

AP-1212

M1049A.SCH

MAR/25/97

VOLTAGE_AMPS

2.40

MTW14P20

S

D

G

FLMPRF

220R

R17

1K

FP

R61L

249R

FP

R38L

249R

FP

R33L

39R

R43L

249R

FP

R52L

249R

FP

R29L

47R

1W

R4

47R

1W

R1

1N4004

D28L

1N4004

D27L

500mW

4V7

ZD8L

BAV21

D26L

100n

C9

9

4

1/2_MW2

7

1

8

2

5

LOCAPL-

VM-

VM-

VM-

LOP

LOP

LOP

VH+

VH+

VH+

VH+

VH+

FTSENSE

FTSENSE

FTSENSE

KILL

KILL

KILL

VH-

VH-

VH-

VH-

VH-

LEDGND

LEDGND

LEDGND

LEDGND

LEDGND

VMID+

VMID+

SHUT_L

SHUT_L

SHUT_L

LG

LG

LG

VMID-

VMID-

PG

PG

PG

PG

LCLIP

LCLIP

LCLIP

SHUT_R

V+

V+

V+

V+

V+

V+

V+

OVER_R

OVER_L

OVER_L

V-

V-

V-

V-

V-

V-

ROP

ROP

ROP

ROP

LFN

LFN

LFN

LBN

LBN

LBN

LBN

LFP

LFP

LFP

LFP

LBP

LBP

LBP

LBP

RSIG

RSIG

RSIG

RSIG

RREF

RREF

RREF

RREF

LEN

LEN

LEN

LEN

LEP

LEP

LEP

LEP

LOG

LOG

LOG

LOG

LOG

LOG

LOP_REF

LOP_REF

LOP_REF

RBN

RBN

RBN

RBN

RFN

RFN

RFN

RFN

LSIG

LSIG

LSIG

RBP

RBP

RBP

RBP

RFP

RFP

RFP

RFP

RFP

RFP

REN

REN

REN

REN

REN

REN

REP

REP

REP

REP

REP

REP

ROG

ROG

ROG

ROG

ROG

ROG

ROP_REF

ROP_REF

ROP_REF

ROP_REF

ROP_REF

ROP_REF

LREF

LREF

LREF

RCLIP

RCLIP

RCLIP

RCLIP

VM+

VM+

VM+

VM+

VM+

10mA

FP= FLAMEPROOF

BELOW 40 mA.  (8 mV BETWEEN TP3 & TP4)

BETWEEN TP3 & TP4. (RESULTS IN 15mA)

IDLE CURRENT: ADJUST RT1 FOR 2 TO 3 mV

LG

TERMINATES

WC5 ON
M1051

WIRE TO

(INPUT BOARD)

TO WC8 ON M1050

V+ (+16VDC)

OPERATING ON CONDITION)

RELAY DRIVE (0 VOLTS UNDER THE NORMAL 

CONNECTOR LAYOUT

+/- 16VDC POWER SUPPLY

RELAY CONTROL CIRCUIT

NOTE: PART NUMBERS WITH A "L" SUFFEX

RIGHT CHANNEL VOLTAGE AMPLIFIER.

WILL HAVE A "R" SUFFEX FOR THE

TEST POINTS

V- (-16VDC)

POWER AMPLIFIER’S OUTPUT

NEGATIVE BATTERY SUPPLY

POSITIVE BATTERY SUPPLY

FLOATING NEGATIVE SUPPLY

FLOATING POSITIVE SUPPLY

EMITTER OF THE NEGATIVE OUTPUT TRANSISTOR

EMITTER OF THE POSITIVE OUTPUT TRANSISTOR

DRIVE SIGNAL TO CURRENT AMP

INVERTING OP AMP DRIVE SIGNAL

TP3

TP2

TP1

M1049

CHANNEL

RIGHT

CHANNEL

RIGHT

RIGHT CHANNEL

P.S.

HERE

+

IF IDLE CURRENT CANNOT BE ADJUSTED

RESISTORS MARKED ‘*’ SHOULD BE CUT OUT

PIN DOES NOT EXIST