YORKVILLE Audiopro 3400 Service Manual page 10

L_LEVEL
R6
C1
HDRM+
47p
25A 3K
P1
10K
6.4 uA ->
BC560
16v
Q1 300mV/47K
Q2
BC550
C28 R2
10u
R5
1K
D1
CLP+
16v
R1 R3 47K
HARD LIMIT @ 11.2 Vp
5K36:1% 2 17K8:1%
C16
10u
1
3
U1
CLP-
1/2
33078
BC550
D2
R4 Q4
1K
R7
FROM INPUT
47K
Q3
PCB:
BC550
R8
C2
HDRM-
47p
3K
L+
8
L-
+18
7
R+ 33078 BYPASS:
6
R- +18 +18 +18
5
+18
4
3
2
-18 C6 C26 C29
1
MS4
100n 100n 100n
-18
EY17
GND
-18 -18 -18
BLACK WIRE
DIRECT TO GND
M1012 HDRM+ 9.85 CLP+ 9.5
+145
R17 R20
270R 10k:1%
R15
C3
1u 16v
113K0:1%
R19
HDRM - CLP = 300mV
45K3:1%
R16
16v 1u
C10
113K0:1%
R18 R21
270R 10K:1%
-145
10u
C15 HDRM- CLP-
16v
R26
C11
HDRM+
47p
3K
R_LEVEL
BC560
25A
P2 Q6
10K
Q7
10u
BC550
C25 R23
1K
R27
D7
16v
CLP+
R22 R25
47K
5K36:1% 17K8:1%
6
7
5
U1
CLP-
1/2
33078
BC550
D8
R24 Q9
1K
R28
47K
Q8
BC550
R29
C12
HDRM-
47p
3K
+78
R102
R104
Q30
0.5W
1K
15K
R106
20v
10R
500mW C48
BDX53C FP
ZD7
100u
C49
20v
500mW
GND 100u
R107
ZD8
R103 Q31 10R
R105
FP
0.5W BDX54C
1K
15K
-78
+18
D3
Iled=20mA
R10
220K
D4
Q5
A63
C4 C32
LD1
100n 27p
R9
GND
820R
RED
R11 R12
LOG
249R:1% 249R:1%
33078
1/2
3
U2
47u
1 1
C9
2
D6
D5
16v
R13 R14
C5
16v 2u2
10K:1% 10K:1%
R44 R45
10K:1% 10K:1%
2
1
3
U3
1/2
33078
R43 R38
82K5:1% 82K5:1%
RV1 RV2
100K 100K
+78
ISOTHERMAL
R37
15R
FP
GND Q11
BF872
330R
R36
GND
RV3 RV4
100K 100K
R41 R39
82K5:1% 82K5:1%
33078
1/2
5
U3
7
6
R40 R42
10K:1% 10K:1%
R33 R34
C14
16v 2u2
10K:1% 10K:1% 47u
C17
2
D12
6 10v
D11
7
5
U2
1/2
33078
R32 R35
ROG
249R:1% 249R:1%
+18
D9
R31
220K
D10
+18
Q10
A63
C13 C31
25v
LD2
100n 27p
R30
GND
820R
RED
25v
SERVICE CAUTION: VOLTAGES GREATER THAN
300 VOLTS ARE PRESENT
-18
ON THIS CIRCUIT BOARD.
THE MAXIMUM CURRENT AVAILABLE FROM
RDRV (LDRV) IS LIMITED TO 75 mA.
LEFT ACTIVITY
RIGHT ACTIVITY
ZD1
+18
LD4
R98 R99
500mW
4v7 LD3
330R 330R
GREEN
Q28
A63 GREEN
EXTRA BRIGHT LEDS!
R101
BAV21
470K D35
R96
220n 250v
C43
100K
C27
220p
3
R54A
47K
R55A
21K5:1%
R49A R57A R67A
470R 150R 33K
C21A
22u 10v
R68A
R48A
68K
+18 1K5
Q14A
BC560
C22A
R47A
300V
1K5 10p
R38A D17A R58A
7K5 39R
R46A
Q15A
4K7
R39A
7K5 MJE5730
Q12A
C18A MPSA42
D13A
16v
D19A 220K
R56A
22u
R44A R60A
D14A
17K8:1%
1K
D22A
R40A R43A
C20A
16v 22n
220R 3K
D20A
D15A R45A
1K
C19A
D23A
D16A ROG
16v
22u Q13A D21A
MPSA92
R41A TIP50
7K5
R50A Q16A
4K7
D18A
R42A
R63A
7K5 C23A
R51A 39R
300V
1K5 10p
Q17A
BC550
-18
R52A
R69A
1K5
33K
C24A
10v 22u
R53A
R64A R70A
470R
150R 68K
HIGH CURRENT INTERFACE:
+18
FROM M1013 BRIDGE RECT PCB, CONTROL
TO AMP A AND AMP B. INTERFACE:
1
EY14 EY15
1 + 5 4 1 + 5 4 +18
EY16 MW3
2
EY11 EY12
+ 8 7 + 8 7 LTSENSE
4
EY13 MW3
3
EY7 EY8 EY9
GND GND RTSENSE
EY10 MW3
4
EY4 EY5
- 8 7 - 8 7 RMS
EY6 MW3
5
EY1 EY2
1 - 5 4 1 - 5 4 KILL
EY3 MW3
TO TEST THIS PCB WITHOUT POWER OUTPUT MODULES CONNECTED,
THE FOLLOWING PATCH PLUGS FOR MW1 AND MW2 SHOULD BE ASSEMBLED.
(LOG AND ROG MUST BE GROUNDED TO THE HIGH CURRENT INTERFACE GROUND)
1: LDRV THE OPERATION OF THE FAN
AND THE HI-TEMP SHUT DOWN
2: LOG MAY BE VERIFIED BY GROUNDING
RTSENSE OR LTSENSE.
3: LCLIM
GND AT
4: LFB
HIGH CURRENT
INTERFACE
5: LTSENSE
(REQUIRED FOR OPERATION)
M1011A.SCH_DATABASE_HISTORY
ZD2
500mW MODEL(S):- AP-3400
4v7
# DATE VER#
Q29
1 JUN/22/94 2.30
A13
ACTGND
2 DEC/02/94 2.40
R97
3 . .
BAV21
470K
D36 4 APR/08/97 2.50
R100
5
220n 250v AUG/05/98 2.60 PC#5528_Q16 A,B REPLACE WITH TIP50#6891
6 D V
C42
100K
C23
7 D V
8 D V
220p
9 D V
10 D V
R54B
47K
+145
R55B
21K5:1% R57B
R49B
150R
470R
FP
C26A
R59A
C21B
10v
10R
4u7 22u 10v
FP
R48B
1K5
+18
C27A
160V
C22B
10u R47B
300V
1K5 10p
R38B D17B
7K5
ROG
R46B
Q15B
4K7
R39B
Q18A 7K5
MJE340 Q12B
C18B MPSA42
D13B
16v
R56B
47R 22u
R44B
R61A D14B
17K8:1%
1K
R40B R43B
C20B
16v 22n
5 220R 3K
D15B R45B
R62A
1K
47R C19B
D16B LOG
16v
22u Q13B
MPSA92
Q19A
MJE350
R41B
7K5
R50B Q16B
4K7
ROG
D18B
R42B
7K5 C23B
R51B
300V
C28A 1K5 10p
160V
10u
-18
R52B
1K5
C29A
R65A C24B
16v
C25A
10R 10v 22u
330u
10v
4u7 FP R53B
R64B
R66A 470R
150R
10R FP
FP
-145
6 11
R125
R1 R2
270R
4
GND
C1 C2
S1 S2
D46
8 1 16 9
LD5
+78
PROTECT
RED
LD6
POWER
10V
1N4004
GREEN
500mW
D48
ZD17
R124
9
1K5
R126
10K
Q36
-18
2N5551
BC550
R127
4K7
GND
OVERHEAT SHUTDOWN
NOTE: ALL UNMARKED DIODES ARE 1N4148
DATE: AUG/05/98 M D O L E : S
FP=FLAMEPROOF
YORKVILLE NAME: M1011A26 PCB#:
DESCRIPTION OF CHANGE
PC#4529_BD651->BDX53C_BD652->BDX54C
PC#4651_DEL_LD9->LD14_ADD_NJM431L
Q20A/B_Q21A/B
PC#5353_R60A_1/2W_220K->2W_220K
N
N
N
N
N
+145
R67B
33K
THIS BOARD MAY
R59B
BE OPERATED
C26B
10R
WITHOUT THE POWER
10v
4u7 FP
AMP MODULES. SEE
R68B
NOTE ABOUT TEST
68K
FIXTURE PLUG.
C27B
TO AMP B (RIGHT)
160V
1
10u
RDRV
MW2
R58B 2
39R ROG
MW2
LOG 3
RCLIM
MW2
4
MJE5730 Q18B RFB
MW2
MJE340 ROG 5
1.6 WATTS RTSENSE
MW2
D19B 220K
47R
R60B
R61B
D22B
6
TO AMP A (LEFT)
D20B
1
R62B
LDRV
47R MW1
D23B
2
D21B LOG
MW1
Q19B 3
MJE350
TIP50 LCLIM
MW1
4
LOG
LFB
MW1
LOG 5
LTSENSE
R63B
MW1
39R
Q17B C28B
160V
BC550
10u
BDX53C
BF872
BDX54C
C29B
R69B
16v
R65B
33K
330u
C25B
10R
10v
FP
4u7 R66B
R70B 10R
B C E B C E
68K FP
-145
MJE5730
MJE2361T
MJE340
RELAY
MJE350
13
+145
GND
RELAY
48V VERSION
D50 D51
E B C B C E
ACTGND
TO ACTIVITY LEDS. R131 R132
NJM431L
1K5 1K5
1 REF
Q38
2 ANODE
MPSA92
3 CATHODE
1 2 3
R130
C52
4u7 63v
10K
BC550C MPSA13
BC560C MPSA63
1N4004
R128
Q37
D49
220K
C B E E B C
R129
1M
MPSA42
MPSA92 2N5551
E B C E B C
CAPACITOR VOLTAGES SHOWN ARE MINIMUM REQUIRED.
AP-3400
S H C S I U S : E 2.60
.
M1011A TITLE: SCH_NAME