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In Power
Service manual
Pathos Acoustics, [email protected], tel: +39 0444 264 732 fax: +39 0444 381 275
R1
1 2
275 v
100!
1 1 1 1
C1 C2 C3 C4
0.1/400V 100/350V 100/350 0.1/400
2
2 2 R2 2 2
1 3
2K2
2 2
82 K 82 K
R3 R4
1 1
C6
1 V1 6 1 V2 6 1 2
ECC83 ECC82
C5
0.1/250
1 2 2 7 2 7
in + C7
2 1 2
6.8/100 out +
R5
470K 1/250
3 4 5 4 5 8 3 4 5 4 5 8
C9
1
1 2
0.1/250
3 1 C10
1 2
2K2 out -
C8 R6 2 2
2 1/250
1 2 R9 R10
in -
Q1 27K 27K
2
6.8/100 MPSA 42 R8
R7
470K 2 1 1 1
+12.6 V
1
2K2
1 D1
R11 1N4007
1 2
270 V
2 2
2
270K 1 PATHOS ACOUSTICS
D2 C12 R12 R13
1 C11
2K5 3K65 Title
30 V 1000/25 InPower Vacuum Preamp. Stage
2
2 1 1 Size Document Number Rev
330!f/63 V A4 {Doc}
Date: Saturday, December 26, 1992 Sheet 1 of 3
Adjust current on the fuse
F2 to 4A with POT R17
Adjust current on the fuse F1 F2
F1 to 4A with POT R16 2 1 2 1
Vcc 35 V Vcc 35 V
FUSE FUSE
R14
R
2 1
2 R15 1
1 2k7
C13 D3 R16 C14 D4
1 1
2 1
R17
220/25 24 V POT 220/25 24 V
2 2 2
100k
3
2
3
R18
2
330 K
R19
330 K
1 1
SPEAKER
1
in + in -
D5 2 2 2 2 2 2 2 2 D6
Q2 Q3 Q4 Q5
15 V R20 R21 R22 R23 R24 R25 R26 R27 15 V
1 1 1 1
10 K 10 K 10 K 10 K 2 1 10 K 10 K 10 K 10 K
1 1 1 1
Q6 Q7 Q8 Q9 2 2 2 2
2
1 2
1 2
1 2
1 1 1 1 1
D7 3 3 3 3 D8
IRF P 240 IRF P 240 IRF P 240 IRF P 240
15 V IRF P 240 3 IRF P 240 3 IRF P 240 3 IRF P 240 3 15 V
2 2
R28 R29
220 K INDUCTOR 220 K
1 1
PATHOS ACOUSTICS
Title
InPower Power Mos-Fet Stage
Size Document Number Rev
A4 {Doc}
Date: Saturday, December 26, 1992 Sheet 2 of 3
Q10
BUT 12
270 V
1
Transformer Vacuum Tube Power supply
D10 R30
TF1 D9
4x 1N4007 1K8
1
F3 FUSE 9.1 V
1 1
1 2 C17 2 C15 2 C18 2 C16
1 4 - + 2
220/400 220/400
0.1/250 V C19 0.1/400 2 Q11 0.1/400 2
AC IN S1
1 MPSA92 R31 1
1
VCC_CIRCLE 2 1 1 2 C20
3 R32 22/350
SW SPST 2K7
470K D11 2
270 V
C21 D12 2
2 1 2 R33 1 2 1
1/50 100K
1N4007 1
2 R34 1 LM7812
1
220K
U2 D14 4 - + 2 1 3
IN OUT +12.6 V
1N4148 D13
2 3 LM555 1
1 4 C R35 Vacuum Tube Heater
- - - 4A 200V U1
2 2 1K
2 1 5 8 3 C23
- - 2 1 C25
C22 - - 0.1
C24 1 2 1
0.01 0.1 2
D15 1
7 6 4700/25
1 2 1N4007 4700/25 D16
1 2 LED
C27 1
2 C26
220/25 R36
2 2
2 1
220K
L1
K1 D17
2 1
2 1 25A 200V 35 V
12V 1S
1
F4 FUSE 3
INDUCTOR IRON
1 2 4 4 - + 2
1 1 1
0.1/250 V C28 1 T1 5 C29 C30
22000/50 22000/50
2 2 2
3
4 8
MAIN POWER TRANSFORMER
PATHOS ACOUSTICS
Title
InPower Power Supply
Size Document Number Rev
A3 {Doc}
Date: Saturday, December 26, 1992 Sheet 3 of 3