Arcam SA30 User manual

CONTENTS
30 WATT AMPLIFIER
(SA-30)
SERVICE MANUAL
ELECTRICAL PARTS LIST
Ref. No. Description Mfr s Part No.
Resistors
(All carbon film 1/4w 5%,unless noted otherwise)
R38 8.2Kohm RFB282S
R39 4.7Kohm RFB247S
R40 1.2Kohm RFB212S
R41 15ohm RFB110S
R43 2.2Kohm RFB222S
R45 5.6Kohm RFB256S
R46 820ohm RFB182S
R47 150ohm RFB150S
R48 4.7Kohm RFB247S
R49 4.7Kohm RFB247S
R5 10Kohm RFB310S
R50 100ohm RFB110S
R51 10ohm RFB010S
R52 15ohm RFB015S
R53 100ohm RFB110S
R57 10ohm RFB010S
R6 330ohm RFB133S
R7 1Kohm RFB210S
R78 270Kohm RFB427S
R8 10Kohm RFB310S
R82 22Kohm RFB322S
R85 12Kohm RFB312S
R80 10Kohm RFB310S
R79 10Kohm RFB310S
Resistors
(5W cement resistor)
R34 0.2ohm RF5G2A
Resistors
(1W metal oxide film resistor)
R86 10ohm RF1010
R35 47ohm RF1047
SPECIFICATIONS 1
TROUBLESHOOTING
BLOCK DIAGRAM
TRANSFORMER AND TRANSISTOR
SCHEMATIC DIAGRAM
PRINTED CIRCUIT BOARDS
EXPLODED VIEWS
ELECTRICAL PARTS LIST
1
2
SPEAKER OUTPUT CONNECTION 2
3
3
4~5
6
7~11

ELECTRICAL PARTS LIST
Ref. No. Description Mfr s Part No.
Resistors
(All carbon film 1/4w 5%,unless noted otherwise)
R29 47Kohm RFB347S
R28 47Kohm RFB347S
R44 39Kohm RFB339S
R27 33Kohm RFB333S
R64 27Kohm RFB327S
R68 270Kohm RFB427S
R32 33Kohm RFB333S
R54 27Kohm RFB327S
R42 22Kohm RFB322S
R22 18Kohm RFB318S
R37 12Kohm RFB312S
R31 12Kohm RFB312S
R30 12Kohm RFB312S
R36 10Kohm RFB310S
R15 10Kohm RFB310S
R11 10Kohm RFB310S
R60 27Kohm RFB327S
R1 1Kohm RFB210S
R12 330ohm RFB133S
R13 5.6Kohm RFB256S
R14 5.6Kohm RFB256S
R16 2.2Kohm RFB222S
R17 2.2Kohm RFB222S
R2 10Kohm RFB310S
R20 270ohm RFB127S
R21 680ohm RFB168S
R25 5.6Kohm RFB256S
R26 1Kohm RFB210S
R33 15ohm RFB015S
SPECIFICATIONS
PHONO-57~-53-55
MIC2-57~-53-55
MIC1-57~-53-55dBsensitivityInput
AUX1-22~-18-20
at 16
>2222.25
at 8
>1415.06VoutputRated
at 4
>1011
>5055dBRatioSignal-to-noise
<21%distortionharmonicTotal
107~127117VsourcePower
REMARKLIMITNOMINALUNITITEM
NOTE:
Nominal specs represent the design specs, All units should be able to approximate
these some will exceed and some may drop slightly below these specs. Limit specs
represent the absolute worst condition these still might be considered acceptable; In
no case should a unit fail to meet limit specs.
TROUBLE SHOOTING
SYMPTOM
Unit does not operate
Output is too small
Ineffective volume control
hloose pl g for power line:
replug into socket.
fuse is burnt out:
replace it.
u
h
houtput transformer open:
replace OT-30.
check Q9~Q14:
replace the defective components.
h
hdefective driver unit:
replace driver it.
houtput transformer open:
replace OT-30.
VR1. VR2. VR3 is out of oder
replace
h
VR1. VR2. VR3
CAUSE AND REMEDY

ELECTRICAL PARTS LIST
Ref. No. Description Mfr s Part No.
Resistors
(All carbon film 1/4w 5%,unless noted otherwise)
R72 75Kohm RFB375S
R81 75Kohm RFB375S
R61 10Kohm RFB310S
R86 7.5Kohm RFB275S
R83 7.5Kohm RFB275S
R77 5.6Kohm RFB256S
R74 5.6Kohm RFB256S
R70 5.6Kohm RFB256S
R84 4.7Kohm RFB247S
R66 3.9Kohm RFB239S
R65 3.9Kohm RFB239S
R87 1Kohm RFB210S
R58 62Kohm RFB362S
R62 82Kohm RFB382S
R67 1Kohm RFB210S
R76 820ohm RFB182S
R71 820ohm RFB182S
R73 680ohm RFB168S
R63 680ohm RFB168S
R9 3.3Mohm RFB533S
R3 3.3Mohm RFB533S
R59 47Kohm RFB347S
R69 82Kohm RFB382S
R10 560Kohm RFB456S
R4 560Kohm RFB456S
R23 390Kohm RFB439S
R24 330Kohm RFB433S
R19 100Kohm RFB410S
R18 100Kohm RFB410S
SPEAKER OUTPUT CONNECTION
the amplifier mag be used in conjunction with a speaker rated at 4,
8, 16 ohms or with 100V constant-voltage speaker systems.
BLOCK DIAGRAM
MIC1
MIC2
COM
4 OHM
8 OHM
16 OHM
100V
-55dB
10K ohms
50K ohms
-55dB
10K ohms
50K ohms
AUX
10K
PHONO
INPUT
INPUT
MASTER
POWER
AMP
POWER
SWITCH
AC FUSE
AC 117v/60Hz
150Hz
1KHz
6KHz
PRIORITY
TO POWER AMP
POWER LED
VOL PCB
POWER PCB
PU PCB
TO PRE AMP
OT-500
8W8W
COM 4W
Total impedance 16W
8W16W100V
8W8W
COM 4W
Total impedance 16W
8W16W100V
COM 4W8W16W100V
8W8W
Total impedance 4W
16W16W
COM 4W
Total impedance 8W
8W16W100V

TRANSFORMER AND TRANSISTOR LEAD IDENTIFICATION
TRANSISTORS
TRANSFORMER (OPT-30)
SCHEMATIC DIAGRAM
VR1
A50K
VR2
A50K
VR3
A50K
1
2
3
L
R
L
R
R58
56K
R61
10K
R60
27K
R13 5.6K
R14 5.6K
R16
2.2K
R17
2.2K
R15
10K
R20
270 R19
100K
R24
330K
R25
5.6K
R22
18K
R23
390K
R20
270
R21
680
C18 470P
C17
100P
C15
(MC).0033U
C16
(MC).015U
C13 470
C12
.001U
C20
1U/50V
C11
10U/16V
C14
47U/25V
C10
.001U
S1
Q3
C1815
Q4
C1815
R41
100
R40
1.2K
R37
12K
R38
8.2K
D4 4001
C30
47U/25V
C31
100U/50V
R34
1W 2.2K
R35
1W 47
R36
10K
Q7 C1815
Q8
C1815
C33
100U/50V
C32
47U/25V
D5
1/2W 9.1V
R39
4.7K
AC
1
AC
2
+3
-4
B1
C21
(MC).0047U
C22
(MC).0047U
C23
2200U/35V
C24
2200U/35V
D1
4001
PT
POW-SW
FUSE
AC 22OV
50HZ/50W
C28
10U/16V
CN4
LED POW
R27
33K
R29
47K
1K
R26
R28
47K
C25
10U/16V C26
22U/16V
Q5
C1815
Q6
C1815
C29
33U/16V
R32
33K
R33
15 D2
4148
R31
12K
R30
12K
C27
33U/16V
R59
47K
R62
82K
Q19
C1815
Q20
C1815
Q16
C1815
Q17
C1815
Q18
C1815
Q14
D718
Q12
C2240
Q13
A1015
Q11
A1015
Q9
C2240 Q10
C2240
R82
22K
R81
7.5K
R83
7.5K
R87
1K
R86
7.5K
R84
4.7K
R67
1K
R85
12K
R68
33P
R63
680
R78
270K
R79
10K
R64 22K
R65
3.9K
R69
82K
R71
820 R70
5.6K
R72
75K
R73
680
R80
10K
R75
75K
R76
820 R77
5.6K
D12
4148
D13
1/2W 3V
C58
100U/16V
C57
10U/16V
C40
.47U/50V
C43
10U/16V
C44
1U/50V
C46
.47U/50V
C55
(MC).033U
C54
.22U/50V
C53
1U/50V
C38
10U/16V
C56
10U/16V
VR7
A50K
VR4
W50K
VR5
W50K
VR6
W50K
6
5
7
U1B
MC4558G 2
3
1
84
U1A
MC4558G
C41
33P
C59
(MC).068U
C45
150P
C42 33P
C49
33P
C51
10P
C48
(MC).015U
C50
(MC).0022U
C52
330P
R66
3.9K
C47
33P
R74
5.6K
1
2
1
2
Q15
D718
R49
4.7K
R50
100
R55
5W 0.2
R51
10
R47
150
R48
4.7K
R52
15
R54
27K
R53
100
R43
2K
R57
10
R46
820
R44
39K
R45
5.6K
R42
22K
D6
1W 18V
D7
4001
C34
.47U/50V
C37
22P
C35
100U/50V
C36
100U/50V
D11
4148
D10
4148
D9
4148
D8
4148
R56
5W 0.2
OPT-30W
R86
1W 10
1
2
COM
4 OHM
8 OHM
16 OHM
100V
CN9
C39
100P
M1
M2
GND
AUX
GND
OUT
M1
M2
GND
AUX
GND
OUT
OT
CN6
CN8
PRIORITY
CN5 PT IN
OUT
+23V
-VCC
+VCC
AUX
PHONO
1
2
3
4
5
6
CN7
1
2
3
4
5
6
CN2
!
!
!
!
!
2SC1815GR
C2240
C1015
ECB
BK BR R O Y
O 4 8 16 100
RN OT-30
60
BK W
SPECIFICATION
Pri: 0-6: 0.2 10%
Sec: 0-4: 0.4 5%
0-8: 0.5 5%
0-16: 0.5 5%
0-100: 10.1 5%
E
CB
ELECTRICAL PARTS LIST
Ref. No. Description Mfr s Part No.
Electrolytic
Capacitors
C30 47uF 25V CE647E
C31 100uF 50V CE710G
C32 47uF 25V CE647E
C33 100uF 50V CE710G
C34 0.47uF 50V CE447G
C35 100uF 50V CE710G
C36 100uF 50V CE710G
C38 10uF 16V CE610D
C4 0.47uF 50V CE447G
C40 0.47uF 50V CE447G
C43 100uF 16V CE710N
C44 10uF 16V CE510G
C46 0.47uF 50V CE447G
C5 100uF 50V CE710G
C53 10uF 16V CE510G
C54 0.22uF 50V CE422G
C56 100uF 16V CE710N
C57 100uF 16V CE710N
C7 1uF 50V CE510G
C9 0.47uF 50V CE447G
Mylar Capacitors
C16 0.015 50V CL315G
C21 0.0047 50V CL247G
C22 0.0047 50V CL247G
C48 0.015 50V CL315G
C50 0.0022 50V CL222G
C55 0.033 50V CL333G
C59 0.068 50V CL368G
R75 75Kohm RFB375S

PRINTED CIRCUIT BOARDS (bottom views)
OUTPUT PCB
POWER PCB
PRE-PCB
30 WATT-VOL
30 WATT-PU
30 WATT-POW
ELECTRICAL PARTS LIST
Ref. No. Description Mfr s Part No.
Ceramic Capacitors
C1 0.001uF Z5E CC210G
C10 0.001uF Z5E CC210G
C12 0.001uF Z5E CC210G
C13 470PF Y5E CC147D
C17 100PF SL CC110C
C18 470PF Y5E CC147D
C3 22PF NPO CC022B
C37 100PF SL CC110C
C39 100PF SL CC110C
C41 33PF NPO CC033B
C42 33PF NPO CC033B
C45 150PF SL CC115C
C47 33PF NPO CC033B
C49 33PF NPO CC033B
C51 10PF NPO CC010B
C52 330PF Y5E CC133D
C6 0.001uF Z5E CC210G
C8 22PF NPO CC022B
Electrolytic
Capacitors
C11 10uF 16V CE610D
C14 47uF 25V CE647E
C2 1uF 50V CE510G
C20 1uF 50V CE510G
C23 2200uF 35V 16*31.5mm CE822F
C24 2200uF 35V 16*31.5mm CE822F
C25 10uF 16V CE610D
C26 22uF 16V CE622D
C27 33uF 16V CE633D
C28 10uF 16V CE610D
C29 33uF 16V CE633D

PRINTED CIRCUIT BOARDS (top views)
OUTPUT PCB
POWER PCB
PRE-PCB
EXPLODED VIEWS
1. 34.5 knob
2. 15 knob
3. swi ch
4. face board
5. wood washer
6. LED 3
7. front board
8.
9. PCB
10. bottom board
11. hole covering board
12. rubber foot spacer
13. color screw bill 4 10
14.
six angle screw cap 4
plated black screw flat 3 7
t
15. color scew fat 4 12
16. PT
17. OT
18. PCB
19. 10mm Cu pole
20.
21. L type fixed frame
22. head sink
23. top cover
24.
25. back board
26. fuse
27.
plated black screw flat 3 10
plated black screw flat 4 6
plated black screw flat 3 12
28. insulating plate
29. terminal
30. wire tie
31.
32. 7P
7P terminal stage protective cover
terminal stage
33. PCB
34. Ni screw flat 4 12
35. plated black screw 3 8
36. six angle screw cap
37. PCB