Service manual

Pathos Acoustics, info@pathosacoustics.com, tel: +39 0444 264 732 fax: +39 0444 Pathos Acoustics, info@pathosacoustics.com, tel: +39 0444 264 732 fax: +39 0444 381 275 381 275

In Power

{Doc}

InPower Vacuum Preamp. Stage

A4

1 3Saturday, December 26, 1992

Title

Size Document Number Rev

Date: Sheet of

275 v

270 V

+12.6 V

PATHOS ACOUSTICS

R1

100!

1 2

C1

0.1/400V

1

2

Q1

MPSA 42

C2

100/350V

1

2

V1

ECC83

2

3 4 5

1 6

7

4 5 8

R4

82 K

1

2

R3

82 K

1

2

V2

ECC82

2

3 4 5

1 6

7

4 5 8

C4

0.1/400

1

2

C3

100/350

1

2

C5

6.8/100

1 2

R5

470K

1

2

C8

6.8/100

1 2 R10

27K

1

2

R9

27K

1

2

R12

2K5

1

2

R8

2K2

12

D1

1N4007

1

2

R13

3K65

1

2

C11

1000/25

1

2

R2

2K2

1 3

2

R62K2

13

2

R7

470K

1

2

R11

270K

1 2

C12

330!f/63 V

1

2

D2

30 V

C6

0.1/250

1 2

C7

1/250

1 2

C9

0.1/250

1 2

C10

1/250

1 2

in +

in -

out +

out -

{Doc}

InPower Power Mos-Fet Stage

A4

2 3Saturday, December 26, 1992

Title

Size Document Number Rev

Date: Sheet of

Vcc 35 VVcc 35 V

PATHOS ACOUSTICS

INDUCTOR

Adjust current on the fuse

F1 to 4A with POT R16

Adjust current on the fuse

F2 to 4A with POT R17

C13

220/25

1

2

D3

24 V

R18

330 K

1

2

R14R

12

D5

15 V

D7

15 V

R20

10 K

1

2

1

SPEAKER

12

Q6

IRF P 240

2

1

3

R21

10 K

1

2

Q7

IRF P 240

2

1

3

Q8

IRF P 240

2

1

3

R22

10 K

1

2

R28

220 K

1

2

D8

15 V

D6

15 VR27

10 K

1

2Q5

IRF P 240

2

1

3

Q4

IRF P 240

2

1

3

R26

10 K

1

2

R25

10 K

1

2Q3

IRF P 240

2

1

3

R29

220 K

1

2

R19

330 K

1

2

R17

100k

1

3

2

R16

POT

1

3

2

R15

2k7

12

R24

10 K

1

2Q2

IRF P 240

2

1

3

Q9

IRF P 240

2

1

3

R23

10 K

1

2

C14

220/25

1

2

D4

24 V

F1

FUSE

12

F2

FUSE

12

in + in -

{Doc}

InPower Power Supply

A3

3 3Saturday, December 26, 1992

Title

Size Document Number Rev

Date: Sheet of

AC IN

VCC_CIRCLE

+12.6 V

270 V

35 V

PATHOS ACOUSTICS

Vacuum Tube Power supply

Vacuum Tube Heater

F3 FUSE

1 2 C17

0.1/400

1

2 C15

220/400

1

2

R32

470K

1

2

Q11

MPSA92

R30

1K8

1

2

R31

2K7

1 2

Q10

BUT 12

C20

22/350

1

2

D9

9.1 V

D10

4x 1N4007

- +

1

2

3

4

D13

4A 200V

- +

1

2

3

4

D11

270 V

R36

220K

12

R34

220K

12

C21

1/50

12

U2

LM555

-1

-

2

-

3

-4

-5

-

6

-

7

-8

C220.01

12

D14

1N4148

1

2

R33

100K

12

D12

1N4007

12

K1

12V 1S

43

12

T1

MAIN POWER TRANSFORMER

1 5

4 8

TF1

Transformer

S1

SW SPST

D16

LED

1

2

C23

0.1

1

2

C24

4700/25

1

2

C25

0.1

1

2

C26

4700/25

1

2

U1

LM7812

IN1

C

2

OUT3

D15

1N4007

1

2

R35

1K

1

2

L1

INDUCTOR IRON

12D17

25A 200V

- +

1

2

3

4

C29

22000/50

1

2

C30

22000/50

1

2

F4 FUSE

1 2

C190.1/250 V

1

2

C280.1/250 V

1

2

C27

220/25

1

2

C18

0.1/400

1

2 C16

220/400

1

2