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SPHINX

Project Two Mk2 Service Manual

31

Partlist display

Designator

Part Type

Description

C1

47uF/16V

Electrolytic capacitor

C2

470uF/25V

Electrolytic capacitor

C3

100nF

MKT capacitor

C4

100nF

MKT capacitor

C5

33pF

Ceramic capacitor

C6

100nF

MKT capacitor

C7

33pF

Ceramic capacitor

C8

100nF

MKT capacitor

C9

100nF

MKT capacitor

CN1

18PIN

18 pins header

IR1

SHARP GP1U5

Infrared receiver

LD1

LD2C

LED

LD2

TLL46221C

LED red

LD3

TLL46221C

LED red

LD4

TLL46221C

LED red

LD5

TLL46221C

LED red

LD6

TLL46221C

LED red

LD7

TLL46221C

LED red

LD8

TLL46221C

LED red

LD9

TLL46221C

LED red

R1

5R62

Resistor MRS25

R10

390R

Resistor MRS25

R11

390R

Resistor MRS25

R2

61K9

Resistor MRS25

R3

390R

Resistor MRS25

R4

10K

Resistor MRS25

R5

39K2

Resistor MRS25

R6

10K

Resistor MRS25

R7

10K

Resistor MRS25

R8

390R

Resistor MRS25

R9

10K

Resistor MRS25

S1

ENCOJ-B24-AE0006

Switch

S2

ITW 60 1000

Switch

S3

ITW 60 1000

Switch

S4

ITW 60 1000

Switch

T1

2SC2240

Transistor

T2

2SA970

Transistor

T3

2SC2240

Transistor

T4

2SA970

Transistor

T5

2SC2240

Transistor

T6

2SA970

Transistor

T7

2SC2240

Transistor

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Содержание Project Two MKII

Страница 1: ...SERVICE MANUAL PROJECT TWO Mk2 PRE AMP...

Страница 2: ...ies 8 Encountering problems 8 7 TECHNICAL SPECIFICATIONS 9 8 ADJUSTMENT PROCEDURES 10 Bias and Offset 10 Initial Set up 10 Bias Offset Adjustment 10 9 PROBLEMS AND SOLUTIONS 11 10 DIAGRAMS AND PARTS L...

Страница 3: ...ore leaving the factory every Project Two Mk2 is subjected to stringent and extensive technical and exterior quality inspection This ensures the user many years of high quality audio from a perfect lo...

Страница 4: ...IR signals from the Remote Control 4 Input selection LED s The input selected with knob 1 is indicated by one of these LED s CD SYM balanced CD input CD unbalanced CD input TUNER unbalanced Tuner inpu...

Страница 5: ...D R To connect the XLR signal cable balanced cable from the right output of the CD player 19 BALANCED OUT L To connect the XLR signal cable balanced cable from the left input of the power amp 20 BALAN...

Страница 6: ...select the input with the large rotary knob INPUT clockwise to the right of the selected one anti clockwise to the left of the selected one Upon reaching LINE 3 or CD SYM you cannot roll over to CD S...

Страница 7: ...on to select the Tape IN input Pressing this button has the same effect as pressing the TAPE button on the front panel Note The LED of the selected input see 4 will remain illuminated 5 1 6 To select...

Страница 8: ...will then hear the Tuner playback Batteries The two batteries have a life span of approximately one year during normal use but shorter when used more intensely Replacement batteries 1 5 V penlight or...

Страница 9: ...dance 10 ohm Volume control ALPS motorised channel imbalance less than 2 dB Sphinx Control 1x optical Remote control full function Mechanical decoupling of housing Transrotor absorbing pucks Power sup...

Страница 10: ...0 times the original value Note We strongly recommend that you use a power amp with a very low DC offset such as the Project Eighteen Note The pre amp and the power amp should be switched on at least...

Страница 11: ...fic 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 file Volume potmeter ha...

Страница 12: ...plicable Connection Diagram for testing the Project 2 Mk2 13 Schematic overview of Project 2 mainboard 14 Project 2 power supply overview 15 Project 2 power supply 16 Project 2 input selection 17 Proj...

Страница 13: ...or testing the Project 2 Mk2 Right Left Amplfier 30x A B AMPLIFIER out1 out2 inp2 inp1 gnd THD Amplitude Frequency Oscillator THD out THD ANALYZER Right Left Pre amplfier 3x A B PRE AMPLIFIER out1 out...

Страница 14: ...AMP PJ02RAMP SCH 22V 22V R INPUT R OUTR R OUT L OUT R OUT L OUT R INPUT L INPUT D24V M1 M2 22V 22V INPUT OUTPUT SELECTION PJ02INP SCH R OUT L OUT R OUT L OUT R INPUT L INPUT D24V M1 M2 22V 22V L OUT R...

Страница 15: ...120V 120V T1 R CORE 50VA SEC R14 10K0 B1 R1 R3 C2 100N C1 100N DGND D24V R4 Vin 1 GND 2 24V 3 U1 L7824C C3 330U R20 R8 C64 100N DGND AGND U1 U2 U3 U4 22V AGND 22V project 2 analog power supply pj2aps...

Страница 16: ...R36 10K0 R42 10K0 22V 22V AGND C37 220N C36 220N LD5 LED red LD4 LED red LD3 LED red LD6 LED red LD2 LED red T5 A1306 T4 C3298 C43 C42 C40 C41 C44 220N C45 220N C16 C24 C23 C15 C25 C17 D7 D8 D6 D5 D3...

Страница 17: ...U5 OPA604AP R62 5K00 R61 5K00 R66 15K0 R67 15K0 AGND AGND R68 1R00 R60 1R00 C49 220N C51 220N C48 330U 50V C50 330U 50V AGND RL3 CD TUNER LINE 1 LINE 2 LINE 3 TAPE IN TAPE OUT OUT 1 OUT 2 OUT 3 CD SYM...

Страница 18: ...9 200R R118 200R R108 51R0 R93 600R R103 51R0 R92 600R T14 C2705 D11 D10 R97 18R0 R96 18R0 R90 4K75 C56 470P R100 10R0 C58 47P R77 10R0 R75 10R0 R79 243R R73 243R R72 100R R80 100R R78 51R0 R74 51R0 R...

Страница 19: ...200R R116 51R0 R95 600R R111 51R0 R94 600R T18 C2705 D15 D14 R99 18R0 R98 18R0 R91 4K75 C57 470P AGND R101 10R0 C59 47P R86 10R0 R84 10R0 R88 243R R82 243R R81 100R R89 100R R87 51R0 R83 51R0 R85 4K75...

Страница 20: ...0K0 R33 10K0 R IN R OUT OGND 22V 22V R51 1R00 R29 1R00 C31 220N C35 220N C30 330U 50V C34 330U 50V AGND VR VR VR VR U2 OPA604AP R25 10K0 R27 10K0 L IN L OUT OGND 22V 22V R28 1R00 R24 1R00 C19 220N C27...

Страница 21: ...16 17 18 CN1 18PIN C1 C47U 16V LD3 LD4 LD5 LD6 LD7 CD TUNER LINE1 LINE2 LINE3 R8 390R R3 390R TAPE M S1 Input selector LD8 LD2 CD S STB R10 390R VOUT 1 PFI 4 PFO 5 WDI 6 RES 7 VBAT 8 U5 MAX690 C3 100...

Страница 22: ...there is a significant image quality loss during the conversion of the drawings the PCB drawings are located in seperate files These files are in PDF format Adob Acrobat 3 0 Reader Pj2Main PDF for Mai...

Страница 23: ...rolytic capacitor C24 2200uF 63V Electrolytic capacitor C25 2200uF 63V Electrolytic capacitor C26 330uF 50V Electrolytic capacitor C27 220nF MKT capacitor C28 220nF MKT capacitor C29 220nF MKT capacit...

Страница 24: ...V Electrolytic capacitor C67 47uF 25V Electrolytic capacitor C68 47uF 25V Electrolytic capacitor C69 10nF MKT capacitor C7 220nF MKT capacitor C70 10nF MKT capacitor C71 10nF MKT capacitor C72 10nF MK...

Страница 25: ...8 Diode D14 1N4148 Diode D15 1N4148 Diode D16 1N4148 Diode D2 1N4001 Diode D3 1N4001 Diode D4 1N4001 Diode D5 1N4001 Diode D6 1N4001 Diode D7 1N4001 Diode D8 1N4001 Diode D9 1N4148 Diode J2 Jumper Jum...

Страница 26: ...51R0 Resistor MRS25 R112 2K21 Resistor MRS25 R113 2K21 Resistor MRS25 R114 2K21 Resistor MRS25 R115 2K21 Resistor MRS25 R116 51R0 Resistor MRS25 R117 2K21 Resistor MRS25 R118 200R Resistor MRS25 R119...

Страница 27: ...25 10K0 Resistor MRS25 R26 24R9 Resistor MRS25 R27 10K0 Resistor MRS25 R28 1R00 Resistor MRS25 R29 1R00 Resistor MRS25 R3 10R0 Resistor MRS25 R30 10K0 Resistor MRS25 R31 8R6 Resistor MRS25 R32 8R6 Res...

Страница 28: ...RS25 R72 100R Resistor MRS25 R73 243R Resistor MRS25 R74 51R0 Resistor MRS25 R75 10R0 Resistor MRS25 R76 4K75 Resistor MRS25 R77 10R0 Resistor MRS25 R78 51R0 Resistor MRS25 R79 243R Resistor MRS25 R8...

Страница 29: ...ransformer T10 2SC3298 Transistor T11 2SA1306 Transistor T12 2SC3298 Transistor T13 2SA1306 Transistor T14 2SC2240 Transistor T15 2SA1145 Transistor T16 2SC2705 Transistor T17 2SA1145 Transistor T18 2...

Страница 30: ...al 30 Designator Part Type Description T5 2SA1306 Transistor T6 2SA970 Transistor T7 2SC2240 Transistor T8 2SA970 Transistor T9 2SC2240 Transistor U1 L7824C Voltage regulator U2 OPA604AP IC U3 OPA604A...

Страница 31: ...LED red LD4 TLL46221C LED red LD5 TLL46221C LED red LD6 TLL46221C LED red LD7 TLL46221C LED red LD8 TLL46221C LED red LD9 TLL46221C LED red R1 5R62 Resistor MRS25 R10 390R Resistor MRS25 R11 390R Res...

Страница 32: ...oject Two Mk2 Service Manual 32 Designator Part Type Description T8 2SA970 Transistor U1 MC7805 IC U2 ULN2804 IC U3 H8 325 HD6413258CP10 IC U4 8 00000MHz X TAL U5 MAX690 IC 1998 Audioscript BV Version...

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