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MAIN

 

PCB

 

PART

 

LIST

 

 

©

 

Cyrus

 

Audio

 

Ltd

 

Jun

 

2014

 

25

 

Cyrus

 

6

 

DAC,

 

Cyrus

 

8

 

DAC

 

service

 

manual

 

Issue

 

1

 

R192

 

SMD0603

 

3k9

 

MF

 

1/16W

 

1%

 

 

R193

 

SMD0805

 

0R

 

MF

 

1/8W

 

1%

 

 

R201

 

SMD0805

 

750R

 

MF

 

1/8W

 

1%

 

 

R202

 

SMD0805

 

220R

 

MF

 

1/8W

 

1%

 

 

R203

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R205

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R206

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R207

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R208

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R209

 

SMD0805

 

330R

 

MF

 

1/8W

 

1%

 

 

R211

 

SMD0805

 

1k

 

MF

 

1/8W

 

1%

 

 

R212

 

SMD0805

 

18R

 

MF

 

1/8W

 

1%

 

 

R213

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R214

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R215

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R216

 

SMD0805

 

68R

 

MF

 

1/8W

 

1%

 

 

R217

 

SMD0805

 

68R

 

MF

 

1/8W

 

1%

 

 

R219

 

RGC

 

0R1

  

MF7W

 

5%

 

Dual

 

resistor

 

R222

 

SMD0805

 

4M7

 

MF

 

1/8W

 

1%

 

 

R224

 

SMD0805

 

220R

 

MF

 

1/8W

 

1%

 

 

R225

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R226

 

SMD0805

 

68k

 

MF

 

1/8W

 

1%

 

 

R227

 

AXIAL0.4

 

39k

 

MF

 

1/4W

 

1%

 

 

R229

 

SMD0805

 

220R

 

MF

 

1/8W

 

1%

 

 

R230

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R231

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R232

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R233

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R234

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R235

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R236

 

SMD0805

 

330R

 

MF

 

1/8W

 

1%

 

 

R237

 

SMD0805

 

27k

 

MF

 

1/8W

 

1%

 

 

R238

 

SMD0805

 

1k

 

MF

 

1/8W

 

1%

 

 

R239

 

SMD0805

 

18R

 

MF

 

1/8W

 

1%

 

 

R240

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R241

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R242

 

SMD0805

 

100R

 

MF

 

1/8W

 

1%

 

 

R243

 

SMD0805

 

68R

 

MF

 

1/8W

 

1%

 

 

R244

 

SMD0805

 

68R

 

MF

 

1/8W

 

1%

 

 

R245

 

RGC

 

0R1

  

MF7W

 

5%

 

Dual

 

resistor

 

R247

 

SMD0805

 

27k

 

MF

 

1/8W

 

1%

 

 

R248

 

SMD0805

 

100k

 

MF

 

1/8W

 

1%

 

 

R250

 

SMD0805

 

220R

 

MF

 

1/8W

 

1%

 

 

R251

 

SMD0805

 

1k

 

MF

 

1/8W

 

1%

 

 

R252

 

AXIAL0.4

 

39k

 

MF

 

1/4W

 

1%

 

 

R253

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R254

 

SMD0805

 

10k

 

MF

 

1/8W

 

1%

 

 

R256

 

SMD0805

 

750R

 

MF

 

1/8W

 

1%

 

 

R257

 

SMD0805

 

1k

 

MF

 

1/8W

 

1%

 

 

R258

 

AXIAL0.4

 

3R9

 

MF

 

1/2W

 

1%

 

 

R259

 

AXIAL0.4

 

3R9

 

MF

 

1/2W

 

1%

 

 

R260

 

SMD0603

 

8k2

 

MF

 

1/16W

 

1%

 

 

R261

 

SMD0603

 

8k2

 

MF

 

1/16W

 

1%

 

 

R262

 

SMD0603

 

Not

 

fitted

 

 

Содержание 6 DAC

Страница 1: ...ENGINEERED TO ENTERTAIN v Cyrus 6 DAC Cyrus 8 DAC Cyrus 8 Qx DAC Digital amplifiers 27 CD Sample rate 44 1kHz MUTE PHONES SETUP ZONE 2 INPUT...

Страница 2: ...lways wear a grounding strap and work on a grounded bench when handling components or servicing a product Static damage may not be immediately obvious and may result in a delayed action component prod...

Страница 3: ...pe identification 4 SMD component replacement 5 Block diagram 7 Technical description 8 Front panel control PCB 11 Fault finding 12 Use with PSX R 16 Quiescent current setting 17 DC offset adjustment...

Страница 4: ...x DAC adds an upgraded D A converter module to the digital stage of the Cyrus 8 DAC The Cyrus 8 DAC and Cyrus 8 Qx DAC include connection for a PSX R upgrade power supply The power feed from the regul...

Страница 5: ...s Power 70W CH both driven into 8 115W CH both driven into 4 Burst Power 320W IHF one channel driven into 1 Distortion 0 002 1kHz into 8 Frequency Response 3 dB at 0 1Hz and 100kHz Damping Factor 150...

Страница 6: ...0 R411 R412 that set the supply voltage for the control system power transformer will require rewiring details in the PCB parts lists Model number display The model number of the amplifier for example...

Страница 7: ...on pins of larger multi pin ICs are not deformed or damaged before fitting Measuring circuits with SMD capacitors and resistors Avoid using sharp pointed probes directly on the component end caps Meas...

Страница 8: ...h desoldering braid Fitting replacement SMD resistors and capacitors to the PCB with a soldering iron 1 Apply a little flux to the connections 2 Place the component in position 3 Tin the soldering iro...

Страница 9: ...IN 10 Wired CON905 CON100 T o RH Channel PRE OUT OUT 30V 42V 30V 42V POWER AMP PGA 2310 11 20 IC100 DATA CS CLK VOLUME CONTROL TAPE OUT HEADPHONES LC78211 IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 INPUT SELECTIO...

Страница 10: ...ered via T601 When there is no USB master device connected to the USB type socket the power supply for IC601 is powered down stopping the clock for IC601 When enabled and with a USB audio signal conne...

Страница 11: ...s comes from a dedicated power amplifier IC901 The headphone amplifier is muted by the microcontroller when the power amplifiers are on and activated when the power amplifiers are off The PHONES_IN si...

Страница 12: ...ntrol microprocessor to prevent switch off noise The control system The system microcontroller and the display are housed on a PCB attached to the back of the front panel assembly The inputs to the mi...

Страница 13: ...ote the serial number of the amplifier and state whether the rotary control has a push function NOTE The two types of control PCB are not directly interchangeable To replace an original non push type...

Страница 14: ...d over this that includes the headphone amplifier the power supply for the display backlight the circuitry for the digital inputs and the D A converter The analogue audio output from the digital audio...

Страница 15: ...disconnected a 6LR61 9V battery can be used for this test If the amplifier switches on check the DC offset voltage at the speaker terminals The DC offset measured should read within 50mV If the volta...

Страница 16: ...the power amplifier and replacing any components where the signal may be lost The Zone 2 output can help trace signal faults If the test signal can be seen at the Zone 2 output but not at the Pre amp...

Страница 17: ...of the components associated with these If a fault is found from these tests the next step recommended is to check the power supplies to the plug in daughter PCB Remove the PCB for these tests then sw...

Страница 18: ...PSX R enabling the regulated power supplies of the PSX R Note that this pin will not change state if the amplifier detects a fault See pin 5 Pin 2 Positive supply In Cyrus 8 DAC amplifiers this pin de...

Страница 19: ...ower amplifier fault Switch off the power to the amplifier Disconnect all loudspeakers or dummy loads Connect a DVM set to read mV to SK205 Switch on the power to the amplifier and bring it out of sta...

Страница 20: ...loudspeakers or dummy loads Connect a DVM set to read mV to the left loudspeaker terminals a short cable terminated with Cyrus speaker connectors is recommended to make certain contact with the termin...

Страница 21: ...ucts such as CD players and tuners are slaves and only listen to MC BUS for commands which may be appropriate MC BUS system test The MC BUS system can be tested by substituting the amplifier into a kn...

Страница 22: ...programming amplifiers without push rotary control Contact the Cyrus factory for availability of the Flash Programming Interface box and software This is supplied with full instructions to set the pro...

Страница 23: ...CHASSIS PARTS LIST Cyrus Audio Ltd Jun 2014 21 Cyrus 6 DAC Cyrus 8 DAC service manual Issue 1 a b 1 1 c e f 1 1 1 1 d g h i e e g 1 f 1 1 1 Under PCB e 2 2...

Страница 24: ...d black Quartz silver 13 See separate parts list Front panel assembly black Front panel assembly silver Brushed black Quartz silver 14 AM INSUL XP Chassis insulator 15 AM T0 8A PS T2 0A AM T1 25 AUL A...

Страница 25: ...ontrol knob plastic insert 6 AM CKNOB AM CKNOB S Volume control knob black Volume control knob silver 7 AM BPPLT V0 Base plate 8 AM BFOOT Rubber foot 9 AM FACXP B AM FACXP S Front facia black Front fa...

Страница 26: ...SMD0805 330R MF 1 8W 1 R126 SMD0805 330R MF 1 8W 1 R127 SMD0603 1k5 MF 1 16W 1 R131 SMD0805 680R MF 1 8W 1 R132 SMD0805 82R MF 1 8W 1 R133 SMD0603 1k5 MF 1 16W 1 R134 SMD0805 680R MF 1 8W 1 R136 SMD0...

Страница 27: ...MF 1 8W 1 R227 AXIAL0 4 39k MF 1 4W 1 R229 SMD0805 220R MF 1 8W 1 R230 SMD0805 10k MF 1 8W 1 R231 SMD0805 10k MF 1 8W 1 R232 SMD0805 100R MF 1 8W 1 R233 SMD0805 100R MF 1 8W 1 R234 SMD0805 100R MF 1...

Страница 28: ...k MF 1 8W 1 R290 SMD0805 100k MF 1 8W 1 R291 SMD0603 4k7 MF 1 16W 1 R292 SMD0805 1k MF 1 8W 1 R293 SMD0805 1k MF 1 8W 1 R294 SMD0603 1M MF 1 8W 1 R295 SMD0603 1M MF 1 8W 1 R296 SMD0805 Not fitted R297...

Страница 29: ...9 SMD0805 22k MF 1 8W 1 R410 AXIAL0 4 Not fitted for 230V operation Fit 0R link for 115V operation R411 AXIAL0 4 Not fitted for 230V operation Fit 0R link for 115V operation R412 AXIAL0 4 0R Fit only...

Страница 30: ...00nF CP 50V 10 X7R dielectric C101 SMD0805 100pF CP 100V 5 NPO dielectric C102 SMD0805 100pF CP 100V 5 NPO dielectric C103 SMD0805 100pF CP 100V 5 NPO dielectric C104 SMD0805 100pF CP 100V 5 NPO diele...

Страница 31: ...tric C204 SMD0603 100nF CP 50V 10 X7R dielectric C205 SMD0603 100nF CP 50V 10 X7R dielectric C206 SMD0603 100nF CP 50V 10 X7R dielectric C208 SMD0603 150pF CP 100V 5 NPO dielectric C209 SMD0805 100pF...

Страница 32: ...0nF CP 100V 10 X7R dielectric C415 RB 2 4 1000uF 16V EL 20 YXJ series 105degC C416 RB 2 3 220uF EL 16V 20 RJ4 series 105 degC C417 CAPSMD5 0 47uF 16V EL 20 EEEFK1C470UR C420 RB 2 3 220uF EL 16V 20 RJ4...

Страница 33: ...T23 BZX84 C5V1 300mA 5V1 Zener diode D224 SOT23 BAS19 300mA Signal diode D225 SOT23 BZX84 C9V1 300mA 9V1 Zener diode D226 SOT23 BZX84 C9V1 300mA 9V1 Zener diode D230 SOT23 BZX84 C9V1 300mA 9V1 Zener d...

Страница 34: ...2SC3326 NPN Signal Transistor T200 SC 74 IMT1A PNP PNP Dual Transistor T201 SC 74 IMT1A PNP PNP Dual Transistor T202 SC 74 IMT1A PNP PNP Dual Transistor T203 SC 74 IMX1 NPN NPN Dual Transistor T204 SO...

Страница 35: ...sistor T310 SC 74 IMX1 NPN NPN Dual Transistor T400 SC 74 IMX1 NPN NPN Dual Transistor T401 SOT23 BC846C NPN Signal Transistor T402 SOT223 2STN2540 PNP Current Driver Transistor T405 SOT23 BC856C NPN...

Страница 36: ...Phono Gold with frame ground black inserts SK105 Quad Phono Gold with frame ground black inserts SK201 Dual speaker socket red SK202 Dual speaker socket black SK203 Dual speaker socket red SK204 Dual...

Страница 37: ...MF 1 8W 1 R708 SMD0805 470R MF 1 8W 1 R711 SMD0805 470R MF 1 8W 1 R712 SMD0603 Not fitted R713 SMD0603 Not fitted R714 SMD0603 75R MF 1 16W 1 R801 SMD0603 2k2 MF 1 16W 1 R802 SMD0603 2k2 MF 1 16W 1 R...

Страница 38: ...ic C610 SMD0603 33pF CP 50V 5 NPO dielectric C701 SMD0603 Not fitted C702 CAPSMD5 0 47uF 16V EL 20 EEEFK1C470UR C703 CAPSMD5 0 47uF 16V EL 20 EEEFK1C470UR C704 SMD0603 100nF CP 50V 10 X7R dielectric C...

Страница 39: ...R dielectric C914 SMD0603 22nF CP 50V 10 X7R dielectric C915 SMD0603 22nF CP 50V 10 X7R dielectric C916 SMD0603 22nF CP 50V 10 X7R dielectric C917 CAPSMD5 0 47uF 16V EL 20 EEEFK1C470UR C919 CAPSMD5 0...

Страница 40: ...ator 3V3 VR902 TO 252 LM1117DTX 5 0 VE fixed regulator 5V0 VR903 TO 252 LM1117DTX 5 0 VE fixed regulator 5V0 FILTERS INDUCTORS CRYSTALS L901 1210 100uH L902 1210 100uH X601 XTAL2 12 000MHz X701 XTAL2...

Страница 41: ...8 DAC circuit diagrams are listed below Main PCB Input selector and volume control 40 Power amplifier and DC servo 41 Power amp regulator and standby control 42 Main PCB power supplies protection logi...

Страница 42: ...50 100nF C151 100nF V_MAX V_MAX DIGIP_R DIGIP_L GND GND low for amps on DIGITAL AUDIO FROM SUB PCB VDD R180 10k C148 100nF C135 100nF C136 100nF C141 100nF GND 15V 15V C127 100nF C160 100nF 15V GND C1...

Страница 43: ...154 400 D209 1SR154 400 R279 100k R280 100k SK205 OC L OC L SK206 OC R OC R T200B IMT1A T200A IMT1A T229B IMT1A T229A IMT1A D205 BZX84 C12 D212 BZX84 C12 R247 27k R237 27k 42V 42V 42V 42V C200 100nF C...

Страница 44: ...control of the power amplifiers R355 100k 42V R347 10k R352 47R R353 10k R354 2k2 R349 22k R351 100R R348 220R R350 100k R346 10k D315 BAS19 T310B IMX1 T310A IMX1 T309A IMT1A T309B IMT1A T C ERROR MAI...

Страница 45: ...D RL401 PH_MUTE CON420 SIL_12W 1 2 3 4 5 6 7 8 1 6VA PCB TRANSFORMER P S 115v 115v TR400 5VOUT FOR VOLUME CHIP LV_UNREG FOR BACKLITE D451 1SR154 400 D452 1SR154 400 D453 1SR154 400 D454 1SR154 400 C45...

Страница 46: ...5VCC_uPROC LV_uproc TEST_SUB TXD PORT P7 7 VDD D503 BAV99 D502 BAV99 MC_IN MC_OUT R504 1k R505 1k MC_BUS_IN R503 47k R502 47k C501 10n MOSI MISO VDD VDD VDD VDD GND GND GND GND GND PSXO MISO MC_BUS_I...

Страница 47: ...USB_D VBUS VUSB R601 470R R602 1k5 VUSB C606 1uF 0805 C605 1uF 0805 DGND Pin 30 Pin 27 C601 47uF 16V PIN2 DGND Pin 32 Pin 2 VCOM VCOM C607 22n C608 22n DGND R607 1M X601 12 000MHz C610 33p C609 33p DG...

Страница 48: ...SPDIF2 1 2 SK701A YkC21 3600N 3 4 SK701B YkC21 3600N SK701C PHONODUAL_HOR_SCR RX4 1 n c 2 RX5 3 TEST2 4 RX6 5 AGND 6 RX7 7 IIC 8 P SN 9 XTL0 10 XTL1 11 GP0 VIN 12 TVdd 13 GP1 n c 14 GP2 TX0 15 GP3 TX...

Страница 49: ...C0G C815 150p 100V R801 2k2 R802 2k2 R809 8k2 R810 8k2 R805 3k9 R806 3k9 C816 150p 100V 5 6 7 IC802B OPA2134AU C814 1n C0G C817 150p 100V R803 2k2 R804 2k2 R811 8k2 R812 8k2 R807 3k9 R808 3k9 C818 150...

Страница 50: ...D PHONES_IN PH MUTE 5V_OUT I P O P G VR902 LM1117DTX 5 0 15V_AN LV 5V_OUT 15V_AN C909 22n C910 22n C911 22n C912 22n DGND AGND AGND AGND C919 47uF 16V C915 22n C916 22n PSUGND 5V_DAC USB_CS SPI_CLK SP...

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