Text preview for : Primare_PRE30_Pre-amplifier_sm.pdf part of PRIMARE Primare PRE30 Pre-amplifier sm . Rare and Ancient Equipment PRIMARE PRE30 Primare_PRE30_Pre-amplifier_sm.pdf
Back to : Primare_PRE30_Pre-amplifi | Home
VOLUME
B1
B2 TAPE OUT LEVEL SURR
CD
STANDBY
TU
OPERATE
TA
AU
AV
PRE-AMPLIFIER PRE30
PRE30 PRE-AMPLIFIER
SERVICE MANUAL
CONTENTS
1. CIRCUIT DIAGRAMS
2. TECHNICAL SPECIFICATIONS
1 2 3 4 5 6 7 8
C13
VCC 100N INPUT SELECTOR
U7
10
9
5 R18 R19 R20
8
+5V 14 4 4K7K 4K7 4K7
220U/16V U5 82B715 R42 D 7
U6 6 3
C 6 SW1
1 8 1 8 1K 7 2
A0 VCC C22 NC VCC B 5
R56 R57 2 7 2 7 9 1
A1 NC C18 LX LY R46 A 4
D 1K 1K 3 6 C17 3 6 13 D
A2 SCL 100N SX SY 3
4 5 100N 4 5 10R 12
VSS SDA GND NC 2
11 SW-12WAY
R43 1
PCD8582
1K 74HCLS147D C12
C10 C11
R47 R45 100N 100N 100N
R21
10R 1K
VCC +5V R44 +5V 100R
1K ON/OFF
GND
R1 C19
R31 C1 4K7 100N
10R R51 SW3
100N 100R
R3
+5V 4K7 SW-12WAY
R50
R2 +5V
1K
R49 4K7
10K SW8
JP1 R10 1
0R B
2 R11 2
+5V
1 COM VOLUME
C HEADER 2 R12 0R 3 C
A
0R
C23 ENCODE-EC16
22UF
R48 C16 C14 C15
10K
R35
10K 100N 100N 100N
R6 R5 R4
R54 4K7 4K7 4K7
+5V
10K +5V +5V +5V
10
9
8
7
6
44
43
42
41
40
39
38
37
36
35
34
16
13
12
10
11
14
16
13
12
10
11
14
16
13
12
10
11
14
+5V
8
8
8
U4 DISP1
COM2
B
C
D
E
P2 U10 U9 DUAL_DISP U8
EA/Vpp
RCLK
SRCLK
RCLK
SRCLK
RCLK
SRCLK
NIC*
P0.0/AD0
P0.1/AD1
P0.2/AD2
P0.3/AD3
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
GND
VCC
GND
VCC
GND
VCC
Vcc
SRCLR
SRCLR
SRCLR
SER
SER
SER
E
E
E
HEADER 10X2
R7 R8 R9
74HC595
74HC595
74HC595
1 33 4K7 4K7 4K7
NIC* ALE
COM1
1 2 32
P1.0/T2 PSEN
2 3 31
DP
P1.1/T2EX P2.7/A15
G
A
F
3 4 30
Q7
O7
O6
O5
O4
O3
O2
O1
O0
Q7
O7
O6
O5
O4
O3
O2
O1
O0
Q7
O7
O6
O5
O4
O3
O2
O1
O0
P1.2/ECI P2.6/A14
4 5 29
P1.3/CEX0 P2.5/A13
5 6 28 R32
1
2
3
4
5
B P1.4/CEX1 P2.4/A12 B
6 7 27 1K33
15
15
15
9
7
6
5
4
3
2
1
9
7
6
5
4
3
2
1
9
7
6
5
4
3
2
1