SPHINX Myth 1 Service Manual

1.

SERVICE MANUAL

MYTH 1

PREAMPLIFIER

LINE 3LINE 1CDPHON ES VIDEO MUTE

LINE 4LINE 2TUNE R TAPE / MON STAND BY

SPHINX Myth 1 Service Manual

2

1. UNPACKING.......................................................................................................................................3

2. CONTACTING THE MANUFACTURER.............................................................................................3

3. THE PRE-AMP AT A GLANCE ..........................................................................................................4

Front panel................................................................................................................................................... 4

Rear panel ...................................................................................................................................................5

4. OPERATION .......................................................................................................................................6

Power on...................................................................................................................................................... 6

Selecting an input ........................................................................................................................................ 6

Adjusting the volume level ...........................................................................................................................6

Temporarily set volume to ‘zero’..................................................................................................................6

Power off...................................................................................................................................................... 6

5. SPHINX REMOTE CONTROL............................................................................................................7

Buttons.........................................................................................................................................................7

Operation.....................................................................................................................................................8

Selecting without switching..........................................................................................................................8

Batteries.......................................................................................................................................................8

Encountering problems................................................................................................................................ 8

6. TECHNICAL SPECIFICATIONS.........................................................................................................9

7. ADJUSTMENT PROCEDURES........................................................................................................10

Offset .........................................................................................................................................................10

8. PROBLEMS AND SOLUTIONS .......................................................................................................11

9. DIAGRAMS AND PARTS LISTS ......................................................................................................12

General Overview Myth 1...........................................................................................................................13

Power Supply ............................................................................................................................................. 14

Input / Output.............................................................................................................................................15

Amplifier Left..............................................................................................................................................16

Amplifier Right............................................................................................................................................17

Controller ...................................................................................................................................................18

Keyboard....................................................................................................................................................19

Parts list..................................................................................................................................................... 20

SPHINX Myth 1 Service Manual

3

The Sphinx Myth 1 design

This service manual will help you to optimally
service and repair the Sphinx Myth 1 Preamplifier.

This pre-amp uses the newest technologies and
refined designs and is extremely simple to operate.
Designs that successfully have been used in the
award winning Project Eight.
Such as the ultra-linear extremely low-noise
Class-A audio circuits, built from the finest hand­selected parts.
The signal path is completely balanced from input to
output, and left and right are totally separated.
The power supply is of a unique design (fully Class­A!) and consists of three completely separate and
independent sections: one for the digital control,
plus one each for the left and right channel.
Input selection is done by means of precision
relays. The ALPS volume control is motor-driven.

To obtain the maximum quality from this power amp
it is necessary to use it with top quality audio
components, preferably with other Sphinx
components.

1. UNPACKING

Before leaving the factory every Myth 1 is subjected
to stringent and extensive technical and exterior
quality inspection.
This ensures you will enjoy many years of high
quality audio from a perfect-looking product.

After unpacking your Myth 1, we therefore
recommend you carefully check it for any transport
damage.
In case of damage: please contact your Sphinx
dealer immediately and retain all packing materials
for possible proof of damage and possible claims.

Even if the component is in perfect condition you
should still keep the packing materials. If you need
to transport your Myth 1 at a later time it will be best
protected by the original packing materials.

2. CONTACTING THE MANUFACTURER

In case of any problem not covered in this manual
or if you have other questions you may contact the
Sphinx International Service Department in The
Netherlands (local time: GMT +1h) during office
hours at the following numbers:

Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

It is always very helpful and efficient if you have all
relevant information about the specific product and
the problem ready.

Please also refer to the User Manual of the
Myth 1 for information about functions not
described in this manual.
It is important to familiarise yourself with the
special functions, operation and possibilities
of the Sphinx Myth 1.

SPHINX Myth 1 Service Manual

4

3. THE PRE-AMP AT A GLANCE

Front panel

1

1. CD: To select the CD input. The red LED will
light.

2. LINE 1: To select the Line 1 input. The red LED
will light.

3. LINE 3: To select the Line 3 input. The red LED
will light.

4. VIDEO: To select the Video line input. The red
LED will light.

5. MUTE: Press this button to temporarily mute the
sound. The red LED will light.

6. PHONES: To connect dynamic stereo
headphones.

7. TUNER: To select the Tuner input. The red LED
will light.

8. LINE 2: To select the Line 2 input. The red LED
will light.

9. LINE 4: To select the Line 4 input. The red LED
will light.

10. TAPE / MON: To select the TAPE IN input. The
red LED will light.

11. STANDBY: To switch the component on and off:
on LED is off
off LED is red

12. Receptor window for the IR signals from the
Remote Control.

13. VOLUME: This rotary knob adjusts the volume
level.

LINE 3LINE 1CDPHONES VIDEO MUTE

LINE 4LINE 2TUNER TAPE / MON STANDBY

12345

678910111

2

1

3

SPHINX Myth 1 Service Manual

5

Rear panel

1. TUNER: To connect the signal cable from the

tuner.

2. CD: To connect the signal cable from the CD
player.

3. TAPE OUT: Connect this output to the input of
the recorder.

4. TAPE IN: Connect this input to the output of the
recorder.

5. LINE 4: To connect the signal cable from the
signal source for LINE 4.

6. LINE 3: To connect the signal cable from the
signal source for LINE 3.

7. LINE 2: To connect the signal cable from the
signal source for LINE 2.

8. LINE 1: To connect the signal cable from the
signal source for LINE 1.

9. VIDEO: To connect the signal cable from the
audio output of the video source.

10. Control Out: To connect the optical cable(s) to
other Sphinx component(s).

11. OUT 1 /2 L+R: Connect this output with a signal
cable to the input of your power amp.

12. Manufacturer’s label: This shows important
data for the component, such as serial number
and mains power voltage.

13. Warning!: This shows important information
about the safety regulations for the Myth 1.

14. AC Power: Connect the mains cable to a mains
power outlet (100 - 240 VAC).
The mains fuse is placed behind the cover.
Here you also find the mains power switch O / I.

123

45678

9

1

0

1112131

4

SPHINX Myth 1 Service Manual

6

4. OPERATION

Connect the mains cable to a mains outlet.
Once you have finished connecting all components,

you can power on the Myth 1 with the mains switch
O / I (14) .

The volume control will then automatically turn
counter-clockwise and for a while the STANDBY
LED will blink red, after which it will remain red. The
pre-amp is now in standby mode.

From now on you should switch the amp on or off
with the STANDBY button (11).
That way, all circuits will remain at optimum
operating temperatures and the audio quality will be
100% immediately after switching on. Additionally it
significantly increases the life span of the
component.

The Myth 1 is now in stand-by mode.

Power on

Switch the Myth 1 on with the STANDBY button.
The pre-amp will select the CD input after which it
un-mutes the output.

Selecting an input

You may select an input with one of the buttons 1. to

9.: the LED will illuminate.

The new input becomes active after you have
selected it. You will hear a 'click'. This is caused by
the precision relays for the inputs: the 'old' one is
released while the new one is energised.

Adjusting the volume level

The large VOLUME control to the right adjusts the
volume level from OFF to maximum (fully clockwise).
The level change is immediate.

Temporarily set volume to ‘zero’

Press the MUTE button (5) temporarily mutes the
sound. The red LED will light. Another press on this
button un-mutes the output.

Power off

You switch the Myth 1 off (to stand-by) with the
STANDBY button (11).

SPHINX Myth 1 Service Manual

7

5. SPHINX REMOTE CONTROL

This single Sphinx Remote Control lets you control
all functions: not only of the Myth 1, but of all other
Sphinx equipment.

Only the following buttons and indications on the
Remote apply to the Myth 1 (the others will not
function):

Buttons

1. PRE-AMP: To select the amp. All buttons
pressed hereafter will control only the pre-amp
functions.
The buttons TUNER and CD will have no effect.

2. STANDBY: Use this red button to switch the
Myth 1 to stand-by.

3. : Pressing this green button mutes the
outputs (temporarily) and you will not hear any
sound. The red LED will be illuminated. Another
press on this button un-mutes the outputs

4. TAPE/MONITOR: Use this button to select the
Tape IN input. Pressing this button has the
same effect as pressing the TAPE/MON button
(9) on the front panel.
Note: The LED of the selected input (see 5.) will
remain illuminated.

5. 1 - 7: To select inputs CD to VIDEO (Note: 8 to
0 do not function):
1 CD CD input
2 TUNER Tuner
3 LINE 1 Line input 1
4 LINE 2 Line input 2
5 LINE 3 Line input 3
6 LINE 4 Line input 3
7 Video Audio from video source

6. ñ button: Pressing this button has the same
effect as rotating the VOLUME control on the
front panel clockwise. You increase the volume.

7. ò button: Pressing this button has the same
effect as rotating the VOLUME control on the
front panel anti-clockwise. You decrease the
volume.

SPHINX Myth 1 Service Manual

8

Operation

The Sphinx Remote is used with several different
models and can therefore transmit different control
codes, depending on which model has been
selected with the select buttons (1).

Important: Always press the PRE-AMP button
before you send a command (even if you only have
one Sphinx component).

Otherwise it is possible that, although the Remote
sends a signal, nothing happens because the
transmitted signal is not 'recognised' by the
component.
Indoors the Remote may be used up to a distance
of 7 meter, provided there is no strong sunlight in
the room and if you aim the Remote at the
component.
Always aim the Remote straight at the front panel of
the component, the maximum offset angle is 30°.

Selecting without switching

Suppose, for instance, that you would like to select
the Tuner to Radio 4 without interrupting CD
playback.
In that case you momentarily depress (not longer
than 0.5 sec) the TUNER button and the '4' button.
The same procedure is used for the other system
components.

How to operate the Remote Control with the
different Sphinx components will be explained in the
corresponding User Manual of each component.

Batteries

The four batteries have a life span of approximately
one year during normal use, but shorter when used
more intensely.
Replacement batteries: 1.5 V, model micro or
penlite or LR03 or AAA or AM4 (one of these codes
is indicated on the packaging and the batteries).
You may also use rechargeable 1.5 V batteries.

Note: Position the new batteries exactly as shown in
the illustration at the bottom of the battery
compartment, otherwise the Remote will not
function!

Encountering problems...

Remote Control does not work

Wrong component selected Select the correct one
Distance to component

exceeds 7 m

Use Remote at closer
range

Angle between Remote and
component exceeds ±30°

Decrease angle

Sensor window on front dirty Clean window
Batteries empty or incorrectly

placed

Use new batteries or
replace the old ones

correctly
Strong (sun)light in room Shade off light source
Component is not switched on

(!)

Switch it on

Component reacts differently than expected or
not at all

Wrong component selected Select the correct one
Component or Remote does

not function

Check component with

its original remote
Batteries in Remote empty Use new batteries

SPHINX Myth 1 Service Manual

9

6. TECHNICAL SPECIFICATIONS

Bandwidth 0 – 111,000 Hz (+0/-3 dB)
Phase response error <0.5°
Gain 9.5 dB max.
THD+N (IHF-A) <0.020 / 0.002% (2nd harm., 10 - 20,000 Hz)
IMD <0.003%
S/N ratio (IHF-A) >84 / 100dB
Channel separation >98 dB
Slew Rate

> 24 V/µs

Inputs 8x cinch (gold-plated)
Level, nominal (for 1 V output) 0.13 V (-18 dBV)
impedance 47 kohm

Outputs 2x cinch Out 1, Out 2 (gold-plated)

1x cinch Tape (gold-plated)
level 10.5 V max. (20.42 dBV) (1 - 100,000 Hz, THD <0.002%)
impedance <10 ohm

Volume control ALPS motorised
channel imbalance less than 2 dB

Sphinx Control 2x optical
Remote control Full function

Power supply Internal, completely stabilised
Supply capacitance 16,280 µF total
Power consumption 11 W (9 W stand-by)
Dimensions (h x w x d) 75 x 434 x 350 mm
Weight 7 kg

This unit conforms to the EMC interference regulations issued by the EU and to the CE standards.
This unit complies with safety regulation VDE 0860 and therefore with international safety regulation IEC 65.

Technical specifications may be changed by SPHINX without prior notice if technical developments make this
necessary.

©1999 Audioscript BV

SPHINX Myth 1 Service Manual

10

7. ADJUSTMENT PROCEDURES

The Myth 1 only has one parameters for each
channel (so two in total) that might need
adjustment:

- Offset: to set the DC-offset voltage of the
output.

These adjustments might be necessary when the
amplifier has been used for a period of time (and
settings have changed due to ageing) or when parts
of the Myth 1 have been replaced.

Offset

The Offset adjustment procedure minimises the DC
offset value of the amplifier output.

• Switch the amplifier ON and wait until it has
reached the proper working temperature.

• Set the millivolt-meter to the DC-range.

• Place the measurement clips of the meter over

the output.

• The level should not exceed +1 or -1 mV DC.
If it does: adjust potmeter P2L (Left) or P2R
(Right) until the level is within this range.

• Repeat this procedure after 20 minutes to
finalise the adjustment.

• Switch the oscillator on and set it to 1 kHz and a
level of 0 dBV (1 V).

• Check the distortion with a THD analyser: it
should be conform to the specified value
(0.002% IHF-A @ 1 – 20 kHz).
If this is correct the procedure is finished.

• You may now switch off the amplifier

SPHINX Myth 1 Service Manual

11

8. PROBLEMS AND SOLUTIONS

At the moment of writing the Myth 3 has no known
specific problems.
If in the future you encounter any problem(s) you
may enter the info in this table. This table can then
be used for future reference.

Please also send (by fax or e-mail) the specific
information to the Sphinx International Service
Department (see page 3): this info can then be
added to the general database to aid others.

Problem Cause Solution Refer to

page…

Bandwidth ≈ 100 kHz

Value of C2L, C2R too large
(220 pF)

Change C2L, C2R value to 47pF16/17

SPHINX Myth 1 Service Manual

12

9. DIAGRAMS AND PARTS LISTS

The next pages contain the front and rear panel lay­out and a complete set of schematic drawings
including the associated parts lists (if applicable).

SPHINX Myth 1 Service Manual

13

General Overview Myth 1

LINE-OR LINE-OL

MOTOR1
MOTOR2

TO-AMPLTO-AMPR

Myth 1 input / outputm1-io.sch

LINE-OR LINE-OL

MOTOR1
MOTOR2

TO-AMPLTO-AMPR TO-AMPL

LINE-OL

-26V

+26V

Myth 1 left channelm1-ampl.sch

TO-AMPL
LINE-OL

-26V

+26V

-26V

+26V

Myth 1 power supplym1-ps.sch

-26V

+26V

ANA1
ANA2
LEDS
OUTP

Myth 1 controlm1-ctrl.sch

ANA1
ANA2
LEDS
OUTP

TO-AMPR

LINE-OR

+26V

-26V

Myth 1 right channelm1-ampr.sch

TO-AMPR

LINE-OR

+26V

-26V

ANA1
ANA2
LEDS

OUTP

Myth 1 keyboardm1-keyb.sch

ANA1
ANA2
LEDS

OUTP

P1A

2 X 20K

Volume control

SPHINX Myth 1 Service Manual

14

Power Supply

C28

100N

C25

100N

C26

100N

C27

100N

C30

100N

C29

100N

C46

100N

C45

100N

C32

100N

C33

100N

C34

100N

C37

100N

D22

1N4007

D23

1N4007

D24

1N4007

D25

1N4007

D27

1N4007

D26

1N4007

+

C31

2200U/63V

+

C38

2200U/63V

VoutVin

GND

U1 7818

DGND

+18V

+26V

-26V

D28

1N4007

D29

1N4007

D30

1N4007

D31

1N4007

+5V_OUT

GR BLU

BLA
WI

RE/BR

PR2

PR3

PR4

PR1

KAST2ES4

VI2

VI1

SW1A
115_230

SW1B
115_230

E$23

E$22

KAST1

C51

100N

MOTOCHAS

MOTOR2

MOTOR1

SPHINX Myth 1 Service Manual

15

Input / Output

R42L
1M

R42R
1M

R43R
1M

R43L
1M

R44R
1M

R44L
1M

R47R
475R

R45L
1M

R45R
1M

R28L
47R

R41L
1M

R40R
1M

R40L
1M

R46L
1M

R41R
1M

R28R
47R

R47L
475R

R46R
1M

R48R
1M

R27R
47R

R27L
47R

R48L
1M

L2/L1A L2/L1B TUNER/CD1A

LINE_OUTA

TUNER/CD1B

LINE_OUTB

U$14.1A U$14.2A TAPE1BTAPE1A CN1

AGND

+

REL1
MT2-24V

+

REL2
MT2-24V

+

REL3
MT2-24V

+

REL4
MT2-24V

+

REL7
MT2-24V

+

REL8
MT2-24V

+

REL5
MT2-24V

+

REL6
MT2-24V

+

REL10

MT2-24V

LINE2 LINE1 TUNER CD LINE4 LINE3 VIDEO TAPE INTAPE OUT

TO-AMPL
TO-AMPR

R29L1MR29R

1M

AGND

AGND

AGND

LINE-OR
LINE-OL

R26R
4R99

R26L
4R99

HPR

HPL

D8 1N4148 D9 1N4148 D10 1N4148 D11 1N4148 D6 1N4148 D13 1N4148 D5 1N4148 D12 1N4148

D15

1N4148

C24

220N

R25
1M

AGND R71

2K7

R72
2K7

OPTO1

AMP_PHDIOD

OPTO2

AMP_PHDIOD

+18V

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

CN2

HD-26

HPR

HPL
HPGND
HPGND

+12V
+12V
+18V
+18V
GND
GND

GND

RL3

RL4

RL1

RL2

RCD
RTU

RVIDEO

RTAPE

OPTOOUT

RELCOM

RLINEOUT

OPTOOUT

MOTOR2

MOTOR1

L2 L1 TUNER CD L4 L3 VIDEO TAPE

LINEOUT

SPHINX Myth 1 Service Manual

16

Amplifier Left

R1L
475R

C2L 10U

C1L

120P

R22L
10K0

R2L
475R

R3L
47K

R19L
475R

R70L
2R2

R69L
2R2

R68L
4K75

R67L
4K75

R21L
4R99

R20L
4R99

R15L
2K2

R11L
47K

R9L
475R

R4L
4K7

R5L
4K7

R7L
475R

R17L
2K2

R18L
475R

R12L
47K

R16L
2K2

R14L
2K2

R10L
47K

R8L
475R

R6L
475R

Q13L
A872

Q6L
A872

Q7L
A872

Q4L
A872

Q10L
C1775

Q11L
C1775

C10L

1U

Q1L
K389

Q12L
J109

AGND

R13L
47K

C11L

1U

AGND

Q2L
C1775

D7L

LD

D3L

LD

D4L

LD

D2L

LD

D1L

LD

C8L

100N

C9L

100N

AGND

+2V

-2V

C6L

100N

C7L

100N

C5L

100N

C4L

100N

C14L

100N

C15L

100N

Q3L
C1775

C21L

100N

C20L

33P

Q5L
A1668

Q14L
C4382

AGND

AGNDAGND

AGND

FB

LINE-OL

Q32L
BD679

Q29L
BD680

D16L

ZF20

D17L

ZF20

+

C35L

10U/100V

+

C36L

10U/100V

+

C42L

C63V/10U

+

C44L

C63V/10U

+

C43L

C63V/10U

+

C41L

C63V/10U

D19L

1N4148

D18L

1N4148

AGND

AGND

AGND

AGND

+26V

-26V

C3L

220P

AGND

TO-AMPL

AGND

+

C40L

2200U/63V

+

C17L

470U

+

C19L

470U

+

C39L

2000U/63V

+

C16L

470U

+

C18L

470U

AGND

AGND

AGND

AGND

+

C23L

470U

R23L
4K75

C22L

1U

AGND

P1LB
20K

P2L
10K

R24L
1M

+2V

-2V

FB

C13L
nvt

C12L
nvt

SPHINX Myth 1 Service Manual

17

Amplifier Right

R1R
475R

C2R 10U

C1R

120P

R22R
10K0

R2R
475R

R3R
47K

R19R
475R

R70R
2R2

R69R
2R2

R68R
4K75

R67R
4K75

R21R
4R99

R20R
4R99

R15R
2K2

R11R
47K

R9R
475R

R4R
4K7

R5R
4K7

R7R
475R

R17R
2K2

R18R
475R

R12R
47K

R16R
2K2

R14R
2K2

R10R
47K

R8R
475R

R6R
475R

Q13R
A872

Q6R
A872

Q7R
A872

Q4R
A872

Q10R
C1775

Q11R
C1775

C10R

1U

Q1R
K389

Q12R
J109

AGND

R13R
47K

C11R

1U

AGND

Q2R
C1775

D7R

LD

D3R

LD

D4R

LD

D2R

LD

D1R

LD

C8R

100N

C9R

100N

AGND

+2V

-2V

C6R

100N

C7R

100N

C5R

100N

C4R

100N

C14R

100N

C15R

100N

Q3R
C1775

C21R

100N

C20R

33P

Q5R
A1668

Q14R
C4382

AGND

AGNDAGND

AGND

FB

LINE-OR

Q32R
BD679

Q29R
BD680

D16R

ZF20

D17R

ZF20

+

C35R

10U/100V

+

C36R

10U/100V

+

C42R

C63V/10U

+

C44R

C63V/10U

+

C43R

C63V/10U

+

C41R

C63V/10U

D19R

1N4148

D18R

1N4148

AGND

AGND

AGND

AGND

+26V

-26V

C3R

220P

AGND

TO-AMPR

AGND

+

C40R

2200U/63V

+

C17R

470U

+

C19R

470U

+

C39R

2000U/63V

+

C16R

470U

+

C18R

470U

AGND

AGND

AGND

AGND

+

C23R

470U

R23R
4K75

C22R

1U

AGND

P1RB
20K

P2R
10K

R24R
1M

+2V

-2V

FB

C13R
nvt

C12R
nvt

SPHINX Myth 1 Service Manual

18

Controller

R25
2K2

R26
2K2

R34

2K2

R28
2K2

R37
2K2

R35
5K6

R36
1K

R33

2K2

R39
2K2

R38
2K2

R31

2K2

R32

2K2

R30

2K2

R27
3R9

R29
2K2

Q6

BC807Q7BC807

Q4
BC817Q5BC817

M1 M2

GND

+5V

MOTOR1

MOTOR2

+

C1

470U/16V

C2

100N

VoutVin

GND

U1 7805

+

C31UC4

100NC5100N

DGND

MR
VCC
GND
PFI PFO

WDI

RES

WDO

U2

ADM705

C7

100N

Q2
BCV47

Q3
BC807

RESET

DGND

+5V

+12V

+5V+12V

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

CN1

HD-26

HPH_L

HPH_R

HPH_COM

+24V

+12V

DGND

MOTOR1

OUT

MOTOR2

OUT_L4
OUT_L2

OUT_TU

T1_1
T2_1

OUT_REL4

T2_2

T1_2

OUT_CD

OUT_L1

OUT_L3

X1
X2
P17

P16
P15
P14
P13

AVCC

AVSS

P37

P12

P00

P01

RES

VSS

VCC

P11
P10 P34

P35

P36

P31

P32

P33

P02

P03

P04

P30

U3
87C752

Q1
8MHz

C9

100N

+5V DGND

RESET

M1

M2

DGND

WD

UNDVT

+

C12

1U

DGND

UNDVT

WD

K2

K4

K3

K1

K5
K6
K7
K8

C13
680P

C14
680P

C15
680P

C16
680P

DGND

V+

2

D

1

GND

3

IR

IR1

SFH506

DGND

+5V

ANA2
ANA1

LED1

LED2

LED3

LED4

LED5

LEDS

C2

12

EN3

9

5

15

R

8

C1

13

1D

3

Vcc

2

SER OUT187

17

6

16

20

3

7

2

6

1

5

0

4

4

14

19110

GND

11

U4
TPIC6595

C2

12

EN3

9

5

15

R

8

C1

13

1D

3

Vcc

2

SER OUT187

17

6

16

20

3

7

2

6

1

5

0

4

4

14

19110

GND

11

U5
TPIC6595

DGND

C11

100N

+5V

DGND

DGND

C10

100N

+5V

DGND

OUT
OUT_L3
OUT_L4
OUT_L1
OUT_L2
OUT_CD
OUT_TU
T1_2

T1_1
T2_2
T2_1
OUT_REL4

SPHINX Myth 1 Service Manual

19

Keyboard

R1
1K

R2
220R

R3
220R

R4
220R

R5
330R

R6
470R

R7
1K

R8
220R

R9
220R

R10
220R

R11
330R

R12
470R

R13
390R

R14
390R

R15
390R

R16
390R

R17
390R

R18
390R

R19
390R

R20
390R

R21
390R

R22
390R

R23
390R

R24
390R

S1A

S1B

S2A

S2B

S3A

S4A

S5A

S5B

S4B

S3B

S7A

S7B

S8A

S8B

S9A

S10A

S11A

S11B

S10B

S9B

S6A

S6B

S12A

S12B

+5V+5V

D1LDD2LDD3LDD4LDD5LDD6

LD

D7LDD8LDD9LDD10LDD11LDD12

LD

LED1

LED2

LED3

LED4

LED5

LED6

OUT_CD

OUT_TU

OUT_L1

OUT_L2

OUT_L3

OUT_L4

+5V +5V

DGND DGND

ANA2ANA1

LEDS OUTP

SPHINX Myth 1 Service Manual

20

Parts list

Designator Part Type Description

C1 470U/16V Electrolitic capacitor
C10 100N MKT capacitor
C10L 1U MKT capacitor
C10R 1U MKT capacitor
C11 100N MKT capacitor
C11L 1U MKT capacitor
C11R 1U MKT capacitor
C12 1U Electrolitic capacitor
C12L nvt MKT capacitor
C12R nvt MKT capacitor
C13 680P MKT capacitor
C13L nvt MKT capacitor
C13R nvt MKT capacitor
C14 680P MKT capacitor
C14L 100N MKT capacitor
C14R 100N MKT capacitor
C15 680P MKT capacitor
C15L 100N MKT capacitor
C15R 100N MKT capacitor
C16 680P MKT capacitor
C16L 470U Electrolitic capacitor
C16R 470U Electrolitic capacitor
C17L 470U Electrolitic capacitor
C17R 470U Electrolitic capacitor
C18L 470U Electrolitic capacitor
C18R 470U Electrolitic capacitor
C19L 470U Electrolitic capacitor
C19R 470U Electrolitic capacitor
C1L 120P MKT capacitor
C1R 120P MKT capacitor
C2 100N MKT capacitor
C20L 33P MKT capacitor
C20R 33P MKT capacitor
C21L 100N MKT capacitor
C21R 100N MKT capacitor
C22L 1U MKT capacitor
C22R 1U MKT capacitor
C23L 470U Electrolitic capacitor
C23R 470U Electrolitic capacitor
C24 220N MKT capacitor
C25 100N MKT capacitor
C26 100N MKT capacitor
C27 100N MKT capacitor
C28 100N MKT capacitor
C29 100N MKT capacitor
C2L 10U MKT capacitor
C2R 10U MKT capacitor
C3 1U Electrolitic capacitor

SPHINX Myth 1 Service Manual

21

Designator Part Type Description

C30 100N MKT capacitor
C31 2200U/63V Electrolitic capacitor
C32 100N MKT capacitor
C33 100N MKT capacitor
C34 100N MKT capacitor
C35L 10U/100V Electrolitic capacitor
C35R 10U/100V Electrolitic capacitor
C36L 10U/100V Electrolitic capacitor
C36R 10U/100V Electrolitic capacitor
C37 100N MKT capacitor
C38 2200U/63V Electrolitic capacitor
C39L 2000U/63V Electrolitic capacitor
C39R 2000U/63V Electrolitic capacitor
C3L 220P MKT capacitor
C3R 220P MKT capacitor
C4 100N MKT capacitor
C40L 2200U/63V Electrolitic capacitor
C40R 2200U/63V Electrolitic capacitor
C41L C63V/10U Electrolitic capacitor
C41R C63V/10U Electrolitic capacitor
C42L C63V/10U Electrolitic capacitor
C42R C63V/10U Electrolitic capacitor
C43L C63V/10U Electrolitic capacitor
C43R C63V/10U Electrolitic capacitor
C44L C63V/10U Electrolitic capacitor
C44R C63V/10U Electrolitic capacitor
C45 100N MKT capacitor
C46 100N MKT capacitor
C4L 100N MKT capacitor
C4R 100N MKT capacitor
C5 100N MKT capacitor
C51 100N MKT capacitor
C5L 100N MKT capacitor
C5R 100N MKT capacitor
C6L 100N MKT capacitor
C6R 100N MKT capacitor
C7 100N MKT capacitor
C7L 100N MKT capacitor
C7R 100N MKT capacitor
C8L 100N MKT capacitor
C8R 100N MKT capacitor
C9 100N MKT capacitor
C9L 100N MKT capacitor
C9R 100N MKT capacitor

CN1 CINCH-MYTH2P CINCH+C131
CN1 HD-26 26PIN
CN2 HD-26 26PIN

D1 LD LED

SPHINX Myth 1 Service Manual

22

Designator Part Type Description

D10 1N4148 Diode
D10 LD LED
D11 1N4148 Diode
D11 LD LED
D12 1N4148 Diode
D12 LD LED
D13 1N4148 Diode
D15 1N4148 Diode
D16L ZF20 Zener Diode
D16R ZF20 Zener Diode
D17L ZF20 Zener Diode
D17R ZF20 Zener Diode
D18L 1N4148 Diode
D18R 1N4148 Diode
D19L 1N4148 Diode
D19R 1N4148 Diode
D1L LD LED
D1R LD LED
D2 LD LED
D22 1N4007 Diode
D23 1N4007 Diode
D24 1N4007 Diode
D25 1N4007 Diode
D26 1N4007 Diode
D27 1N4007 Diode
D28 1N4007 Diode
D29 1N4007 Diode
D2L LD LED
D2R LD LED
D3 LD LED
D30 1N4007 Diode
D31 1N4007 Diode
D3L LD LED
D3R LD LED
D4 LD LED
D4L LD LED
D4R LD LED
D5 1N4148 Diode
D5 LD LED
D6 1N4148 Diode
D6 LD LED
D7 LD LED
D7L LD LED
D7R LD LED
D8 1N4148 Diode
D8 LD LED
D9 1N4148 Diode
D9 LD LED

IR1 SFH506 Infra red receiver

SPHINX Myth 1 Service Manual

23

Designator Part Type Description

K1 1PIN PIN
K2 1PIN PIN
K3 1PIN PIN
K4 1PIN PIN
K5 1PIN PIN
K6 1PIN PIN
K7 1PIN PIN
K8 1PIN PIN
L2/L1 CINCH-MYTH4P CINCH
LINE_OUT CINCH-MYTH4P CINCH

OPTO1 AMP_PHDIOD Optical output
OPTO2 AMP_PHDIOD Optical output

P1 2 X 20K Stereo motor potmeter
P2L 10K Adj. Potmeter
P2R 10K Adj. Potmeter

Q1 8MHz XTAL
Q10L C1775 Transistor
Q10R C1775 Transistor
Q11L C1775 Transistor
Q11R C1775 Transistor
Q12L J109 Dual P-JFET
Q12R J109 Dual P-JFET
Q13L A872 Transistor
Q13R A872 Transistor
Q14L C4382 Transistor
Q14R C4382 Transistor
Q1L K389 Dual N-JFET
Q1R K389 Dual N-JFET
Q2 BCV47 Transistor
Q29L BD680 Transistor
Q29R BD680 Transistor
Q2L C1775 Transistor
Q2R C1775 Transistor
Q3 BC807 Transistor
Q32L BD679 Transistor
Q32R BD679 Transistor
Q3L C1775 Transistor
Q3R C1775 Transistor
Q4 BC817 Transistor
Q4L A872 Transistor
Q4R A872 Transistor
Q5 BC817 Transistor
Q5L A1668 Transistor
Q5R A1668 Transistor
Q6 BC807 Transistor
Q6L A872 Transistor
Q6R A872 Transistor

SPHINX Myth 1 Service Manual

24

Designator Part Type Description

Q7 BC807 Transistor
Q7L A872 Transistor
Q7R A872 Transistor

R1 1K Resistor
R10 220R Resistor
R10L 47K Resistor
R10R 47K Resistor
R11 330R Resistor
R11L 47K Resistor
R11R 47K Resistor
R12 470R Resistor
R12L 47K Resistor
R12R 47K Resistor
R13 390R Resistor
R13L 47K Resistor
R13R 47K Resistor
R14 390R Resistor
R14L 2K2 Resistor
R14R 2K2 Resistor
R15 390R Resistor
R15L 2K2 Resistor
R15R 2K2 Resistor
R16 390R Resistor
R16L 2K2 Resistor
R16R 2K2 Resistor
R17 390R Resistor
R17L 2K2 Resistor
R17R 2K2 Resistor
R18 390R Resistor
R18L 475R Resistor
R18R 475R Resistor
R19 390R Resistor
R19L 475R Resistor
R19R 475R Resistor
R1L 475R Resistor
R1R 475R Resistor
R2 220R Resistor
R20 390R Resistor
R20L 4R99 Resistor
R20R 4R99 Resistor
R21 390R Resistor
R21L 4R99 Resistor
R21R 4R99 Resistor
R22 390R Resistor
R22L 10K0 Resistor
R22R 10K0 Resistor
R23 390R Resistor
R23L 4K75 Resistor
R23R 4K75 Resistor

SPHINX Myth 1 Service Manual

25

Designator Part Type Description

R24 390R Resistor
R24L 1M Resistor
R24R 1M Resistor
R25 1M Resistor
R25 2K2 Resistor
R26 2K2 Resistor
R26L 4R99 Resistor
R26R 4R99 Resistor
R27 3R9 Resistor
R27L 47R Resistor
R27R 47R Resistor
R28 2K2 Resistor
R28L 47R Resistor
R28R 47R Resistor
R29 2K2 Resistor
R29L 1M Resistor
R29R 1M Resistor
R2L 475R Resistor
R2R 475R Resistor
R3 220R Resistor
R30 2K2 Resistor
R31 2K2 Resistor
R32 2K2 Resistor
R33 2K2 Resistor
R34 2K2 Resistor
R35 5K6 Resistor
R36 1K Resistor
R37 2K2 Resistor
R38 2K2 Resistor
R39 2K2 Resistor
R3L 47K Resistor
R3R 47K Resistor
R4 220R Resistor
R40L 1M Resistor
R40R 1M Resistor
R41L 1M Resistor
R41R 1M Resistor
R42L 1M Resistor
R42R 1M Resistor
R43L 1M Resistor
R43R 1M Resistor
R44L 1M Resistor
R44R 1M Resistor
R45L 1M Resistor
R45R 1M Resistor
R46L 1M Resistor
R46R 1M Resistor
R47L 475R Resistor
R47R 475R Resistor
R48L 1M Resistor

SPHINX Myth 1 Service Manual

26

Designator Part Type Description

R48R 1M Resistor
R4L 4K7 Resistor
R4R 4K7 Resistor
R5 330R Resistor
R5L 4K7 Resistor
R5R 4K7 Resistor
R6 470R Resistor
R67L 4K75 Resistor
R67R 4K75 Resistor
R68L 4K75 Resistor
R68R 4K75 Resistor
R69L 2R2 Resistor
R69R 2R2 Resistor
R6L 475R Resistor
R6R 475R Resistor
R7 1K Resistor
R70L 2R2 Resistor
R70R 2R2 Resistor
R71 2K7 Resistor
R72 2K7 Resistor
R7L 475R Resistor
R7R 475R Resistor
R8 220R Resistor
R8L 475R Resistor
R8R 475R Resistor
R9 220R Resistor
R9L 475R Resistor
R9R 475R Resistor

REL1 MT2-24V Relay
REL10 MT2-24V Relay
REL2 MT2-24V Relay
REL3 MT2-24V Relay
REL4 MT2-24V Relay
REL5 MT2-24V Relay
REL6 MT2-24V Relay
REL7 MT2-24V Relay
REL8 MT2-24V Relay

S1 SWITCH-DPST Switch
S10 SWITCH-DPST Switch
S11 SWITCH-DPST Switch
S12 SWITCH-DPST Switch
S2 SWITCH-DPST Switch
S3 SWITCH-DPST Switch
S4 SWITCH-DPST Switch
S5 SWITCH-DPST Switch
S6 SWITCH-DPST Switch
S7 SWITCH-DPST Switch
S8 SWITCH-DPST Switch

SPHINX Myth 1 Service Manual

27

Designator Part Type Description

S9 SWITCH-DPST Switch
SW1 115_230 Switch

TAPE1 CINCH-MYTH4P CINCH
TUNER/CD1 CINCH-MYTH4P CINCH
U$14.1 CINCH-MYTH4P CINCH
U$14.2 CINCH-MYTH4P CINCH

U1 7805 Voltage regulator
U1 7818 Voltage regulator
U2 ADM705 MAX705
U3 87C752 Microprocessor
U4 TPIC6595 Shift register
U5 TPIC6595 Shift register

©1999 Audioscript BV
Version: 1999-03-13 17:31