Fostex PH-100 Service manual

Service Manual

Model

PH-100

HEADPHONE AMP DISTRIBUTOR

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:

TO PREVENT ELECTRIC SHOCK, MATCH
WIDE BLADE OF PLUG TO WIDE SLOT,
FULLY INSERT.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

The lightening flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product's
enclosure that may be of sufficient magni­tude to constitute a risk of electric shock to
persons.

“WARNING”

“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS­TURE.”

SAFETY INSTRUCTIONS

Read instructions - All the safety and operating instruc-

1.
tions should be read before the appliance is operated.
Retain instructions - The safety and operating instructions

2.
should be retained for future reference.
Heed warnings - All warnings on the appliance and in the

3.
operating instructions should be adhered to.
Follow instructions - All operating and use instructions

4.
should be followed.
Water and Moisture - The appliance should not be used

5.
near water - for example, near a bathtub, washbowl,
kitchen sink, laundry tub, in a wet basement, or near a
swimming pool, and the like.
Carts and Stands - The appliance should be used only

6.
with a cart or stand that is recommended by the manufac­turer.

An appliance and cart combination should be moved with
care. Quick stops, excessive force, and uneven surfaces
may cause the appliance and cart combination to over­turn.
Wall or Ceiling Mounting - The appliance should be

7.
mounted to a wall or ceiling only as recommended by the
manufacturer.
Ventilation - The appliance should be situated so that its

8.
location or position does not interfere with its proper ven­tilation. For example, the appliance should not be situ­ated on a bed, sofa, rug, or similar surface that may block
the ventilation openings; or, placed in a built-in installa­tion, such as a bookcase or cabinet that may impede the
flow of air through the ventilation openings.

ATTENTION:

POUR ÉVITER LES CHOCS ÉLECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE
LA FICHE DANS LA BORNE CORRE­SPONDANTE DE LA PRISE ET POUSSER
JUSQU' AU FOND.

The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and mainte­nance (servicing) instructions in the litera­ture accompanying the appliance.

Heat - The appliance should be situated away from heat

9.
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
Power Sources - The appliance should be connected to a

10.
power supply only of the type described in the operating
instructions or as marked on the appliance.
Grounding or Polarization - The precautions that should

11.
be taken so that the grounding or polarization means of
an appliance is not defeated.
Power Cord Protection - Power supply cords should be

12.
routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience recep­tacles, and the point where they exit from the appliance.
Cleaning - The appliance should be cleaned only as rec-

13.
ommended by the manufacturer.
Nonuse Periods - The power cord of the appliance should

14.
be unplugged from the outlet when left unused for a long
period of time.
Object and Liquid Entry - Care should be taken so that

15.
objects do not fall and liquids are not spilled into the en­closure through openings.
Damage requiring Service - The appliance should be ser-

16.
viced by qualified service personnel when:

The power supply cord or the plug has been damaged;

A.

or
Objects have fallen, or liquid has been spilled into the

B.

appliance; or
The appliance has been exposed to rain; or

C.

The appliance does not appear to operate normally or

D.

exhibits a marked changed in performance; or
The appliance has been dropped, or the enclosure

E.

damaged.

Servicing - The user should not attempt to service the ap-

17.
pliance beyond that described in the operating instruc­tions. All other servicing should be referred to qualified
service personnel.

TABLE OF CONTENTS

PH-100 Service Manual

1.

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.

CONTROLS, INDICATORS & CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.

EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . .

4.

CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4
5
6

14

NOTES

* Exploded view, PCB assembly, parts list and circuit diagrams are given in this manual to assist the service

technician in maintaining the Model PH-100.

* The following accessories are supplied with PH-100 as the standard accessories.

PH-100 owner's manual, MULTI : 8288495000

* Following is the packing material for the Model PH-100.

Carton, inner, PH-100 : 8528031000
Packing, side, A, PH-100 : 8528029000
Packing, side, B, PH-100 : 8528030000

CAUTION

Parts marked with this sign are safety critical components. They must always be replaced with identical
components. Refer to the Fostex Parts List and ensure exact replacement.

3

PH-100 Service Manual

1. SPECIFICATIONS

SPECIFICA TION UNIT
INPUT

INPUT L/R

Connector XLR balanced, ø6 mm balanced / unbalanced phone jack
Input Level + 4 dBu (XLR), - 10 dBV
Input Impedance 20 kΩ or more

INPUT , AUX RTN L MONO / R, CH IN

Connector RCA jack
Input Level - 10 dBV
Input Impedance 20 kΩ or more

OUTPUT

PHONES

Connector ø6 mm stereo phone jack
Maximum Output Level 500 mW (32 Ω)
Load Impedance 8 Ω ~ 32 Ω

CASCADE OUT L/R

Connector RCA jack
Output Level -10 dBV
Load Impedance 10 kΩ or more

OUTPUT
WEIGHT
POWER

JPN AC 100 V 50 / 60 Hz
USA /CND (UL) AC 120 V 60 Hz
EUR (IEC CLASS I) AC 230 V 50 / 60 Hz
UK (BS) AC 230 V 50 Hz

POWER CONSUMPTION
ST ANDARD ENVIRONMENT

Standard T emperature 20 ± 3 ˚C
Standard Humidity 60 ± 5 %

ENVIRONMENT CONDITION

Characteristics Guaranteed

Temperature + 5 ~ + 35 ˚C
Humidity 30 % ~ 65 %
AC V oltage Deviation ± 5 % or less

Operation Guaranteed

Temperature - 5 ~ + 45 ˚C
Humidity 10 % ~ 90 %
AC V oltage Deviation ± 5 % or less

PHONES MAXIMUM OUTPUT
DISTORTION

PHONES - 65 dBV or less (DIN AUDIO), - 80 dBV or less (IHF A)
CASCADE OUT - 85 dBV or less (DIN AUDIO), - 90 dBV or less (IHF A)

RESIDUAL NOISE

PHONES 0.1 % or less (200 mW , 32 Ω, 1 kHz)
CASCADE OUT 0.05 % or less (-10 dBV, 1 kHz)

FREQUENCY RESPONSE

PHONES 30 Hz ~ 20 kHz: ± 2 dB (200 mW, 32 Ω)
CASCADE OUT 30 Hz ~ 20 kHz: ± 1 dB

CLICK NOISE

0 dBV = 1 V r.m.s., 0 dBu = 0.775 V r .m.s.

49 (H) x 484 (W) x 267 (D) mm
About 4 kg

18 W

500 mW (at 32 Ω load, 3 % distortion, -10 dBV / 1 kHz input)

- 20 dBVp-p or less (CASCADE OUT)

Specifications and physical appearance are subject to change without notice for product improvement.

4

10

0

HEADPHONE AMP DISTRIBUTOR

POWER

10

0

PH-100

5

5

AUX IN

INPUT

MONO

ST

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

10

0

5

PEAK

10

9

8

7

6

5

4

3

2

1

PHONES

CAL

12 34

567

< PH-100 Front Panel >

+4dBu

5

4

3

2

1

10

9

8

7

6

PHONES (PRIORITY TO "FRONT PHONES" OUTPUT)

AC IN

CASCADE

OUT (-10dBV)

L

10

9

8

7

6

R

L/MONO

INPUT

(-10dBV)

CHANNEL IN (-10dBV)

INPUT L

INPUT R

-10dBV

-10dBV

HOT

R

L/MONO

AUX IN

(-10dBV)

COLD

GND

XLR PHONE

2

3

1

T

R

S

2

1

4

3

5

R

+4dBu

2

1

3

4

5

6

7

8

< PH-100 Rear Panel >

2. CONTROLS, INDICATORS & CONNECTORS

PH-100 Service Manual

(RCA: -10 dBV)

(RCA: -10 dBV)

(XLR: +4 dBV)

(RCA: -10 dBV)

(RCA: -10 dBV)

(PHONE: -10 dBV)

7. [PHONES] jacks (1 through 10)

5. [INPUT] level control

1. [PHONES] level controls (1 through 10)

2. [PEAK] indicator

3. [AUX IN] level control

6. [INPUT (ST, MONO)] select switch

4. [POWER] switch / indicator

1. [AC IN] connector

2. [PHONES] jacks (1 through 10)

3. [CASCADE OUT] jacks (L, R)

4. [CHANNEL IN] jacks (1 through 10)

5. [AUX IN] jacks (L/MONO, R)

6. [INPUT (-10dBV)] jacks

7. [INPUT (+4dBu)] connectors (L, R)

8. [INPUT (-10dBV)] jacks (L, R)

5

PH-100 Service Manual

3. EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST

PH-100 OVERALL EXPLODED VIEW & PARTS LIST

Ref. No. Part No. Description

1 8507 0020 00 Foot, PH-100
2 8274 4090 00 PCB assy, Phones Out, PH-100
3 8274 4100 00 PCB assy, Power LED, PH-100
4 8274 4110 00 PCB assy, Power, PH-100
5 8274 4120 00 PCB assy, Power SW, PH-100
6 8218 2630 00 Sticker, GND
7 8276 8010 00 Cord, power, UL/CSA,

8276 8021 00 Cord, power, CEE, 0309B-0310B
8276 9170 00 Cord, power, BS 3C KP610-KS31A

8276 8000 00 Cord, power, DM, VM1292-1298
8 8526 0190 00 Knob, push, power, PH-100
9 8526 0130 00 Knob, volume, VF16EX

10 8520 0330 00 Angle, rack mount, DE-10
11 8520 0370 00 Bracket, AC-IN, NF-01A
12 8520 0440 00 Bracket, volume, PY008A0
13 8520 0450 00 Panel, front, print, PH-100
14 8520 0460 00 Panel, rear, print, PH-100
15 8520 0470 00 Chassis, PH-100
16 8516 0370 00 Sheet, insulation, PH-100
17 N/A
18 N/A
19 8274 4130 00 PCB assy, HP VOL
20 8274 4080 00 PCB assy, Main, PH-100
21 8542 0040 00 Transformer, power, 100V/120V,

8542 0050 00 Transformer, power, 230V, PH-100,

22 8507 0030 00 Spacer, PWB, MSPLS-10U, PH-100
23 8520 0480 00 Case, top, print, PH-100
24 8516 0380 00 Sheet, insulation, B, PH-100

VM0033-0089

PH-100

6

BBT3 x 8BZn

PH-100 Service Manual

BBT3 x 8BZn

13

BBT3 x 8BZn

BBT3 x 8BZn

22

BBT3 x 6BZn

9

20

BBT3 x 6BZn

BBT3 x 6CZn

D

12

BBT3 x 6BZn

E

A

23

B

BBT3 x 6BZn

24

19

B3 x 8BZn

BBT3 x 6BZn

BBT3 x 8

BZn

2

BBT3 x 12BZn

14

B3 x 8BZn

BBT3 x 8BZn

10

BBT3 x 6BZn

4

BBT4 x 6BZn

11

7

C

A

D

E

BBT3 x 6BZn

21

5

16

NUT HEX M4-ZMC3

8

15

Washer

(attached to VOL)

9

3

C

BBT3 x 6CZn

Nut (attached to VOL)

6

B4 x 8 BZn

B

1

BBT3 x 6BZn

B4 x 6BZn

10

7

PH-100 Service Manual

C16

FL05

C17

FL07

FL06

FL08

RJACK

RCONN

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1

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CH1FRNT

FL2B

CH3FRNT

1

4

5

8

1

4

5

8

R168

J25

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IC16

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CH5FRNT

C102

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CH4FRNT

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C150

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R231

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CH6FRNT

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R241

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R243

C166

C172

R261

R262

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CH7FRNT

FL8A

C170

R253

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C167

R254

C168

R260

R256

FL8B

R255

C181

R273

R274

C180

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CH8FRNT

FL9A

C179

R265

R304

R271

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R266

C177

R272

R268

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R267

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C189

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CH9FRNT

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FL10B

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CH10FRNT

R47

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1

4

5

8

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SW

HS

PH-100 PCB ASSEMBLIES

• Main / Phones Out / Power LED PCB

8

1

2

S1

CH6REARA

CH7REARA

CH8REARA

CH9REARA

CH10REARA

FIL6A

CN008

FIL6B FIL8AFIL7B

FIL7A

FIL8B

FIL9A

FIL10B

FIL10A

FIL9B

1

10

CN1

TM3

1

TM1

100V

120V

230V

TM2

3

S1

RISK OF FIRE REPLACE

FUSE AS MARKED

T250mAL 250V

T400mAL 250V

L1

F1

AC01

N

ACJACK

L2

L

• HP VOL PCB

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1

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JP91

JP31

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4

R15

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4

5

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4
5

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4
5

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4

5

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4
5

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4

5

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1

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8

1

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VR2

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VR12

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VR11

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VR8

VR7

VR6

VR5

VR4

JP76

VR3

VR10

C94

R149
C89

VR9

C91

R141

C86

C88

R133

C85

R125

C80

C82

R117

C77

C79

R109

C74

R97

C10

C76
R101

C71
R89

PKLED

R166

R158

R150

R142

R134

R126

R118

JP77

R94

PH-100 Service Manual

R110

R102

• Power / Power SW PCB

9

PH-100 Service Manual

PH-100 PCB Assy Parts List

REF. PART No. PART NAME

AC01 8234110302 D, VT, VARISTOR, ERZVA7D431
ACJACK 8545001000 CONN, PL, JACK, AC-INLET, 3P,

BC002 CORD ASSY , 10P, PY008, No.2
BC003 CORD ASSY , 5P, PY008A0, No.3
BC004 CORD ASSY , 6P, PY008A0, No.4
BC005, 006 CORD ASSY, 10P, PY008, No.5
BC007 CORD ASSY , 10P, PY008, No.7
BC008 CORD ASSY , 10P, PY008, No.5
BC009 CORD ASSY, 2P, PY008, No.9
BC1 CONN, A3963WV2-3P
C2, 3 ELECT, EGST226M1E01D110, 25V,

C4, 5 CERAS, SL, 50V, 101J, T
C6 N/A
C7 ELECT, EGST226M1E01D1 10, 25V,

C8, 9 N/A
C10 ELECT, EGST106M1V01D1 10, 35V,

C11 N/A
C12 ELECT, EGST106M1V01D1 10, 35V,

C13 ELECT, EGST226M1E01D110, 25V,

C14 CERA, S, SL, 50V, 100J, T
C15 N/A
C16, 17 ELECT, EGST226M1E01D110, 25V,

C18, 19 CERAS, SL, 50V, 101J, T
C20 ELECT, EGST226M1E01D110, 25V,

C21~25 N/A
C26 ELECT, EGST226M1E01D110, 25V,

C27 CERA, S, SL, 50V, 100J, T
C28 ELECT, SC, 25V, 220M ,T
C29 CERA, S, SL, 50V, 470J, T
C30 N/A
C31, 32 ELECT, SC, 25V, 220M, T
C33 CERA, S, SL, 50V, 470J, T
C34 ELECT, SC, 25V, 220M, T
C35~43 ELECT, EGST226M1E01D110, 25V,

C44 CERAS, S, YF, 50V, 104Z, T
C45 ELECT, EGST226M1E01D110, 25V,

C46 CERAS, S, YF, 50V, 104Z, T
C47 ELECT, EGST226M1E01D110, 25V,

C48 CERAS, S, YF, 50V, 104Z, T
C49 ELECT, EGST226M1E01D110, 25V,

C50 CERA, S, SL, 50V, 100J, T
C51 ELECT, EGST226M1E01D110, 25V,

C52 CERA, S, SL, 50V, 100J, T
C53 ELECT, EGST226M1E01D110, 25V,

IS-7014SB

220M, T

220M, T

100M, T

100M, T

220M, T

220M, T

220M, T

220M, T

220M, T

220M, T

220M, T

220M, T

220M, T

220M, T

REF. PART No. PART NAME

C54, 55 N/A
C56, 57 ELECT, EGST226M1E01D110, 25V,

220M, T
C58, 59 PEST, PEI308104, 100V, 104J, T
C60, 61 ELECT, EGST108M1E01G200, 25V,

102M
C62 ELECT, WP, 25V , 332M
C63 ELECT, EGST108M1E01G200, 25V,

102M
C64 ELECT, EGST225M1H01D1 10, 50V,

228M, T
C65 ELECT, SME BP, 50V , 228M, T
C66, 67 ELECT, EGST226M1E01D110, 25V,

220M, T
C68, 69 CERAS, S, YF , 50V, 104Z T
C70 ELECT, EGST107M1E01E1 10, 25V,

101M, T
C71 CERA, S, SL, 50V , 100J, T
C72 N/A
C73, 74 CERA, S, SL, 50V , 100J, T
C75 N/A
C76, 77 CERA, S, SL, 50V , 100J, T
C78 N/A
C79, 80 CERA, S, SL, 50V , 100J, T
C81 N/A
C82, 83 CERA, S, SL, 50V , 100J, T
C84 N/A
C85, 86 CERA, S, SL, 50V , 100J, T
C87 N/A
C88, 89 CERA, S, SL, 50V , 100J, T
C90 N/A
C91, 92 CERA, S, SL, 50V , 100J, T
C93 N/A
C94, 95 CERA, S, SL, 50V , 100J, T
C96 N/A
C97, 98 CERA, S, SL, 50V , 100J, T
C99 N/A
C100 CERA, S, S1, 50V, 100J, T
C101 CERA, S, YB, 50V, 102K, T
C102 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C103 CERAS, S, YF , 50V, 104Z, T
C104 ELECT, SC, 10V, 331M, T
C105 PEST, S, 50V, 473K, T
C106 PEST, PEI308102, 100V, 102J, T
C107 ELECT, SC, 10V, 470M, T
C108 ELECT, SC, 10V, 331M, T
C109 PEST, S, 50V, 473K, T
C110 PEST, PEI308102, 100V, 102J, T
C111 ELECT , EGST476M1A01D1 10, 10V,

470M, T
C112 CERAS, S, YF , 50V, 104Z, T
C113 ELECT, SC, 10V, 331M, T
C114 PEST, S, 50V, 473K, T
C115 EST, PEI308102, 100V, 102J, T
C116 ELECT, SC, 10V, 470M, T
C117 ELECT, SC, 10V, 331M, T
C118 PEST, S, 50V, 473K, T

10

PH-100 Service Manual

REF. PART No. PART NAME

C119 PEST, PEI308102, 100V, 102J, T
C120 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C121 CERAS, S, YF , 50V, 104Z, T
C122 ELECT, SC, 10V, 331M, T
C123 PEST, S, 50V, 473K, T
C124 PEST, PEI308102, 100V, 102J, T
C125 ELECT, SC, 10V, 470M, T
C126 ELECT, SC, 10V, 331M, T
C127 PEST, S, 50V, 473K, T
C128 PEST, PEI308102, 100V, 102J, T
C129 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C130 CERAS, S, YF , 50V, 104Z, T
C131 ELECT, SC, 10V, 331M, T
C132 PEST, S, 50V, 473K, T
C133 PEST, PEI308102, 100V, 102J, T
C134 ELECT, SC, 10V, 470M, T
C135 ELECT, SC, 10V, 331M, T
C136 PEST, S, 50V, 473K, T
C137 PEST, PEI308102, 100V, 102J, T
C138 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C139 CERAS, S, YF , 50V, 104Z, T
C140 ELECT, SC, 10V, 331M, T
C141 PEST, S, 50V, 473K, T
C142 PEST, PEI308102, 100V, 102J, T
C143 ELECT, SC, 10V, 470M, T
C144 ELECT, SC, 10V, 331M, T
C145 PEST, S, 50V, 473K, T
C146 PEST, PEI308102, 100V, 102J, T
C147 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C148 CERAS, S, YF , 50V, 104Z, T
C149 ELECT, SC, 10V, 331M, T
C150 PEST, S, 50V, 473K, T
C151 PEST, PEI308102, 100V, 102J, T
C152 ELECT, SC, 10V, 470M, T
C153 ELECT, SC, 10V, 331M, T
C154 PEST, S, 50V, 473K, T
C155 PEST, PEI308102, 100V, 102J, T
C156 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C157 CERAS, S, YF , 50V, 104Z, T
C158 ELECT, SC, 10V, 331M, T
C159 PEST, S, 50V, 473K, T
C160 PEST, PEI308102, 100V, 102J, T
C161 ELECT, SC, 10V, 470M, T
C162 ELECT, SC, 10V, 331M, T
C163 PEST, S, 50V, 473K, T
C164 PEST, PEI308102, 100V, 102J, T
C165 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C166 CERAS, S, YF , 50V, 104Z, T
C167 ELECT, SC, 10V, 331M, T
C168 PEST, S, 50V, 473K, T
C169 PEST, PEI308102, 100V, 102J, T
C170 ELECT, SC, 10V, 470M, T
C171 ELECT, SC, 10V, 331M, T
C172 PEST, S, 50V, 473K, T

REF. PART No. PART NAME

C173 PEST , PEI308102, 100V, 102J, T
C174 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C175 CERAS, S, YF , 50V, 104Z, T
C176 ELECT, SC, 10V, 331M, T
C177 PEST , S, 50V, 473K, T
C178 PEST , PEI308102, 100V, 102J, T
C179 ELECT, SC, 10V, 470M, T
C180 ELECT, SC, 10V, 331M, T
C181 PEST , S, 50V, 473K, T
C182 PEST , PEI308102, 100V, 102J, T
C183 ELECT, EGST476M1A01D1 10, 10V,

470M, T
C184 CERAS, S, YF, 50V, 104Z, T
C185 ELECT, SC, 10V, 331M, T
C186 PEST , S, 50V, 473K, T
C187 PEST , PEI308102, 100V, 102J, T
C188 ELECT, SC, 10V, 470M, T
C189 ELECT, SC, 10V, 331M, T
C190 PEST , S, 50V, 473K, T
C191~95 N/A
C196, 97 CERA, S, SL, 50V , 100J, T
C198~217 ELECT, EGST475M1H01D1 10, 50V,

478M, T
Ch1~10 8545009000 JACK, PHONE, MSJ-064-05A, SR,
FRNT AG
Ch1~5 8545007000 JACK, PHONE, MSJ-064-11D, SR
REAR
Ch6~10 8545007000 JACK, PHONE, MSJ-064-11D, SR
REARA
CN002 CONN, A2001WV2-10P
CN003 CONN, A2502WV2-5P
CN004 CONN, A2502WV2-6P
CN005~008 CONN, A2502WV2-10P
CN009 CONN, A2502WV2-2P
CN1 CONN, B3P5-VH
D1 8534005000 D, RS4031
D3, 4 8234501600 D, 1N4148ST , T
D6~10 8234501600 D, 1N4148ST , T
F1L1A~10A 8242186013 FILTER, T, EMI, LFM7B-M3R2T
F1L1B~10B 8242186013 FILTER, T , EMI, LFM7B-M3R2T
FL01~24 8242186013 FILTER, T, EMI, LFM7B-M3R2T
FL1A~10A 8242186013 FILTER, T, EMI, LFM7B-M3R2T
FL1B~10B 8242186013 FILTER, T, EMI, LFM7B-M3R2T
FUSE HOLD FUSE HOLDER, EYF-52BCT
IC1~15 8236031600 IC, NJM2068DD
IC16~35 8236046000 IC, NJM386BD
IC36 8236031600 IC, NJM2068DD
L1, 2 FERRITE, F5, R6H, 6.0X10.0, 2.5TS
L CONN 8545006000 JACK, CAN JY -5033B 030
LED1 8534001000 LED, 204HD/E, RED
L JACK 8545007000 JACK, PHONE, MSJ-064-11D, SR
PKLED 8534001000 LED, 204HD/E, RED
Q1, 2 8534002000 TR, 2SC4208A, QRS, T
Q3 8534003000 TR, 2SD2025
Q4 8534004000 TR, 2SB1237, PQR, T
Q5 8534002000 TR, 2SC4208A, QRS, T
Q6 8234000304 TR, 2SA1015Y, TPE2
R1 CARBON, R, CR, 1/6W, 393J, T265
R2~4 CARBON, R, CR, 1/6W, 103J, T265

11

PH-100 Service Manual

REF. PART No. PART NAME

R5, 6 CARBON, R, CR, 1/6W , 393J, T265
R7 CARBON, R, CR, 1/6W, 103J, T265
R8 CARBON, R, CR, 1/6W, 393J, T265
R10 CARBON, R, CR, 1/6W , 473J, T265
R11 CARBON, R, CR, 1/6W , 472J, T265
R12, 13 CARBON, R, CR, 1/6W , 473J, T265
R14 CARBON, R, CR, 1/6W , 103J, T265
R15 CARBON, R, CR, 1/6W , 473J, T265
R16 CARBON, R, CR, 1/6W , 103J, T265
R17 CARBON, R, CR, 1/6W , 104J, T265
R18, 19 CARBON, R, CR, 1/6W , 393J, T265
R21, 22 CARBON, R, CR, 1/6W , 103J, T265
R23 CARBON, R, CR, 1/6W , 153J, T265
R24 CARBON, R, CR, 1/6W , 101J, T265
R25, 26 CARBON, R, CR, 1/6W , 103J, T265
R27 CARBON, R, CR, 1/6W , 152J, T265
R28 CARBON, R, CR, 1/6W , 104J, T265
R29, 30 CARBON, R, CR, 1/6W , 273J, T265
R31~33 CARBON, R, CR, 1/6W, 224J, T265
R34, 35 CARBON, R, CR, 1/6W , 102J, T265
R36 CARBON, R, CR, 1/6W , 104J, T265
R37, 38 CARBON, R, CR, 1/6W , 393J, T265
R40 CARBON, R, CR, 1/6W , 103J, T265
R42, 43 CARBON, R, CR, 1/6W , 103J, T265
R44 CARBON, R, CR, 1/6W , 393J, T265
R46 CARBON, R, CR, 1/6W , 203J, T265
R47 CARBON, R, CR, 1/6W , 103J, T265
R50 CARBON, R, CR, 1/6W , 203J, T265
R51 CARBON, R, CR, 1/6W , 104J, T265
R53 CARBON, R, CR, 1/6W , 104J, T265
R55 CARBON, R, CR, 1/6W , 104J, T265
R57 CARBON, R, CR, 1/6W , 104J, T265
R59 CARBON, R, CR, 1/6W , 104J, T265
R61 CARBON, R, CR, 1/6W , 104J, T265
R63 CARBON, R, CR, 1/6W , 104J, T265
R65 CARBON, R, CR, 1/6W , 104J, T265
R67 CARBON, R, CR, 1/6W , 104J, T265
R69 CARBON, R, CR, 1/6W , 104J, T265
R70 CARBON, R, CR, 1/6W , 474J, T265
R71, 72 CARBON, R, CR, 1/6W , 203J, T265
R73, 74 CARBON, R, CR, 1/6W , 222J, T265
R75 CARBON, R, CR, 1/6W , 471J, T265
R76 CARBON, R, CR, 1/6W , 103J, T265
R78 CARBON, R, CR, 1/6W , 104J, T265
R79 CARBON, R, CR, 1/6W , 472J, T265
R80 CARBON, R, CR, 1/6W , 273J, T265
R81 CARBON, R, CR, 1/6W , 103J, T265
R82 CARBON, R, CR, 1/6W , 104J, T265
R83 5MM JUMPER
R85 CARBON, R, CR, 1/6W , 393J, T265
R87, 88 CARBON, R, CR, 1/6W , 393J, T265
R89 CARBON, R, CR, 1/6W , 104J, T265
R90 CARBON, R, CR, 1/6W , 332J, T265
R91, 92 CARBON, R, CR, 1/6W , 393J, T265
R93 CARBON, R, CR, 1/6W , 104J, T265
R94 CARBON, R, CR, 1/6W , 332J, T265
R95, 96 CARBON, R, CR, 1/6W , 393J, T265
R97 CARBON, R, CR, 1/6W , 104J, T265
R98 CARBON, R, CR, 1/6W , 332J, T265
R99, 100 CARBON, R, CR, 1/6W, 393J, T265

REF. PART No. PART NAME

R101 CARBON, R, CR, 1/6W, 104J, T265
R102 CARBON, R, CR, 1/6W, 332J, T265
R103, 104 CARBON, R, CR, 1/6W, 393J, T265
R105 CARBON, R, CR, 1/6W, 104J, T265
R106 CARBON, R, CR, 1/6W, 332J, T265
R107, 108 CARBON, R, CR, 1/6W, 393J, T265
R109 CARBON, R, CR, 1/6W, 104J, T265
R110 CARBON, R, CR, 1/6W, 332J, T265
R111, 112 CARBON, R, CR, 1/6W , 393J, T265
R113 CARBON, R, CR, 1/6W, 104J, T265
R114 CARBON, R, CR, 1/6W, 332J, T265
R115, 116 CARBON, R, CR, 1/6W, 393J, T265
R117 CARBON, R, CR, 1/6W, 104J, T265
R118 CARBON, R, CR, 1/6W, 332J, T265
R119, 120 CARBON, R, CR, 1/6W, 393J, T265
R121 CARBON, R, CR, 1/6W, 104J, T265
R122 CARBON, R, CR, 1/6W, 332J, T265
R123, 124 CARBON, R, CR, 1/6W, 393J, T265
R125 CARBON, R, CR, 1/6W, 104J, T265
R126 CARBON, R, CR, 1/6W, 332J, T265
R127, 128 CARBON, R, CR, 1/6W, 393J, T265
R129 CARBON, R, CR, 1/6W, 104J, T265
R130 CARBON, R, CR, 1/6W, 332J, T265
R131, 132 CARBON, R, CR, 1/6W, 393J, T265
R133 CARBON, R, CR, 1/6W, 104J, T265
R134 CARBON, R, CR, 1/6W, 332J, T265
R135, 136 CARBON, R, CR, 1/6W, 393J, T265
R137 CARBON, R, CR, 1/6W, 104J, T265
R138 CARBON, R, CR, 1/6W, 332J, T265
R139, 140 CARBON, R, CR, 1/6W, 393J, T265
R141 CARBON, R, CR, 1/6W, 104J, T265
R142 CARBON, R, CR, 1/6W, 332J, T265
R143, 144 CARBON, R, CR, 1/6W, 393J, T265
R145 CARBON, R, CR, 1/6W, 104J, T265
R146 CARBON, R, CR, 1/6W, 332J, T265
R147, 148 CARBON, R, CR, 1/6W, 393J, T265
R149 CARBON, R, CR, 1/6W, 104J, T265
R150 CARBON, R, CR, 1/6W, 332J, T265
R151, 152 CARBON, R, CR, 1/6W, 393J, T265
R153 CARBON, R, CR, 1/6W, 104J, T265
R154 CARBON, R, CR, 1/6W, 332J, T265
R155, 156 CARBON, R, CR, 1/6W, 393J, T265
R157 CARBON, R, CR, 1/6W, 104J, T265
R158 CARBON, R, CR, 1/6W, 332J, T265
R159, 160 CARBON, R, CR, 1/6W, 393J, T265
R161 CARBON, R, CR, 1/6W, 104J, T265
R162 CARBON, R, CR, 1/6W, 332J, T265
R163, 164 CARBON, R, CR, 1/6W, 393J, T265
R165 CARBON, R, CR, 1/6W, 104J, T265
R166~168 CARBON, R, CR, 1/6W, 332J, T265
R169 CARBON, R, CR, 1/6W, 103J, T265
R170 CARBON, R, CR, 1/6W, 100J, T265
R171 METAL, R , M O , 1 W, 568J, M15
R172~174 CARBON, R, CR, 1/6W, 332J, T265
R175 CARBON, R, CR, 1/6W, 103J, T265
R176 METAL, R , M O , 1 W, 568J, M15
R177 CARBON, R, CR, 1/6W, 100J, T265
R178~180 CARBON, R, CR, 1/6W, 332J, T265
R181 CARBON, R, CR, 1/6W, 103J, T265
R182 CARBON, R, CR, 1/6W, 100J, T265

12

PH-100 Service Manual

REF. PART No. PART NAME

R183 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R184~186 CARBON, R, CR, 1/6W, 332J, T265
R187 CARBON, R, CR, 1/6W, 103J, T265
R188 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R189 CARBON, R, CR, 1/6W, 100J, T265
R190~192 CARBON, R, CR, 1/6W, 332J, T265
R193 CARBON, R, CR, 1/6W, 103J, T265
R194 CARBON, R, CR, 1/6W, 100J, T265
R195 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R196~198 CARBON, R, CR, 1/6W, 332J, T265
R199 CARBON, R, CR, 1/6W, 103J, T265
R200 METAL, R, MO, 1W, 568J, M15
R201~203 CARBON, R, CR, 1/6W, 100J, T265
R202~204 CARBON, R, CR, 1/6W, 332J, T265
R205 CARBON, R, CR, 1/6W, 103J, T265
R206 CARBON, R, CR, 1/6W, 100J, T265
R207 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R208~210 CARBON, R, CR, 1/6W, 332J, T265
R211 CARBON, R, CR, 1/6W, 103J, T265
R212 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R213 CARBON, R, CR, 1/6W, 100J, T265
R214~216 CARBON, R, CR, 1/6W, 332J, T265
R217 CARBON, R, CR, 1/6W, 103J, T265
R218 CARBON, R, CR, 1/6W, 100J, T265
R219 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R220~222 CARBON, R, CR, 1/6W, 332J, T265
R223 CARBON, R, CR, 1/6W, 103J, T265
R224 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R225 CARBON, R, CR, 1/6W, 100J, T265
R226~228 CARBON, R, CR, 1/6W, 332J, T265
R229 CARBON, R, CR, 1/6W, 103J, T265
R230 CARBON, R, CR, 1/6W, 100J, T265
R231 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R232~234 CARBON, R, CR, 1/6W, 332J, T265
R235 CARBON, R, CR, 1/6W, 103J, T265
R236 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R237 CARBON, R, CR, 1/6W, 100J, T265
R238~240 CARBON, R, CR, 1/6W, 332J, T265
R241 CARBON, R, CR, 1/6W, 103J, T265
R242 CARBON, R, CR, 1/6W, 100J, T265
R243 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R244~246 CARBON, R, CR, 1/6W, 332J, T265
R247 CARBON, R, CR, 1/6W, 103J, T265
R248 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R249 CARBON, R, CR, 1/6W, 100J, T265
R250~252 CARBON, R, CR, 1/6W, 332J, T265
R253 CARBON, R, CR, 1/6W, 103J, T265
R254 CARBON, R, CR, 1/6W, 100J, T265
R255 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R256~258 CARBON, R, CR, 1/6W, 332J, T265
R259 CARBON, R, CR, 1/6W, 103J, T265
R260 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R261 CARBON, R, CR, 1/6W, 100J, T265
R262~264 CARBON, R, CR, 1/6W, 332J, T265
R265 CARBON, R, CR, 1/6W, 103J, T265
R266 CARBON, R, CR, 1/6W, 100J, T265
R267 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R268~270 CARBON, R, CR, 1/6W, 332J, T265
R271 CARBON, R, CR, 1/6W, 103J, T265
R272 METAL, R , M O , 1 W, 5 6 8 J , M 1 5

REF. PART No. PART NAME

R273 CARBON, R, CR, 1/6W , 100J, T265
R274~276 CARBON, R, CR, 1/6W , 332J, T265
R277 CARBON, R, CR, 1/6W , 103J, T265
R278 CARBON, R, CR, 1/6W , 100J, T265
R279 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R280~282 CARBON, R, CR, 1/6W , 332J, T265
R283 CARBON, R, CR, 1/6W , 103J, T265
R284 METAL, R , M O , 1 W, 5 6 8 J , M 1 5
R285 CARBON, R, CR, 1/6W , 100J, T265
R286 CARBON, R, CR, 1/6W , 332J, T265
R287~306 CARBON, R, CR, 1/6W , 103J, T265
RCAJ1~J4 8545008000 JACK, RCA, 4P , RJ-1, 109 01-0300B
RCONN 8545006000 JACK, CAN, JY-5033B 030
RJACK 8545007000 JACK, PHONE, MSJ-064-11D, SR
S1 8553002000 SW , P O W ER, SDDLBIAID2
S1A, B CORD ASSY, 1P , PY008
SW 8553003000 SW, SS010-P022MAM-PA9
U1 8236032105 IC, 220, AN, REGULA T OR,

NJM7812F A
U2 8236034805 IC, 220, AN, REGULA T OR,

NJM7912F A
VR1~12 8540001000 VR, RV0925G-20F A1-A5K-A, 5K x 2
Z1 8534006000 ZD, 18BSBST, T

Abbreviation

D: Diode
CONN: Connector
P: Penetrate mount
T: Taping device
ELECT: Electrolytic type
CERA: Ceramic type
PEST: Mylar type
J: 5% tolerance
K: 10% tolerance
L: L form
I: I form
CAN: Cannon
ZD: Zener diode
DG: Digital
AN: Analog

13

PH-100 Service Manual

MAIN PCB

POWER SW PCB

POWER LED

PCB

POWER PCB

4. CIRCUIT & BLOCK DIAGRAMS

14

MAIN (1/2) / POWER (1/2) / POWER SW / POWER LED PCB, PH-100

PH-100 Service Manual

HP VOL PCB, PH-100

15

PH-100 Service Manual

16

MAIN (2/2) PCB, PH-100

PHONES OUT / POWER (2/2) PCB, PH-100

PHONES OUT PCB

PH-100 Service Manual

POWER SW PCB

17

PH-100 Service Manual

-10dBV

-2.3dB

STEREO/MONO

-12.3dBV

A

-10dBV

-2.3dB

-12.3dBV

A

-22.3dBV

INPUT

+5.8dB

-10dB

+11.8dB

AUX IN

-10dBV

-16dBV

-6dB

PHONES 1

+3.8dB

+8.2dB

PHONES 2

PHONES 3

PHONES 4

PHONES 5

PHONES 6

PHONES 7

PHONES 8

PHONES 9

PHONES 10

PHONES 1 FRONT

PHONES 2 FRONT

PHONES 3 FRONT

PHONES 4 FRONT

PHONES 5 FRONT

PHONES 6 FRONT

PHONES 7 FRONT

PHONES 8 FRONT

PHONES 9 FRONT

PHONES 10 FRONT

PHONES 1 REAR

PHONES 2 REAR

PHONES 3 REAR

PHONES 4 REAR

PHONES 5 REAR

PHONES 6 REAR

PHONES 7 REAR

PHONES 8 REAR

PHONES 9 REAR

PHONES 10 REAR

CASCADE OUT

L

R

-10dBV

PEAK LED

CHANNEL IN 1

-10dBV

CHANNEL IN 2

CHANNEL IN 3

CHANNEL IN 4

CHANNEL IN 5

CHANNEL IN 6

CHANNEL IN 7

CHANNEL IN 8

CHANNEL IN 9

CHANNEL IN 10

L/MONO

R

-10dBV

UNBAL -10dBV

INPUT R

BAL +4dBu

INPUT R

INPUT R

-10dBV

UNBAL -10dBV

INPUT L

BAL +4dBu

INPUT L/MONO

INPUT L

500mW max.

18

PH-100 BLOCK DIAGRAM

< NOTE >

PH-100 Service Manual

19

FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021
FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A.

© PRINTED IN JAPAN FEB. 2003 8288808000