background image

 

Clocks and SPDIF stage. 

 

IC300 

is a 

PLL1700E

 clock generator IC the chip is 

powered from the +5V(D) rail. The Chip runs in 

software mode and is slaved from the Vaddis V (data 

coming in on the MD line). 

 

X300

 is a 

27Mhz

 crystal that 

IC300

 uses to generate 

all the video and audio clocks required by the system 

the crystal sits on the XTI and XTO pins of the chip, 

the 27Mhz output at Pin 10 (MCKO) is used to drive 

the Vaddis chip directly bypassing the internal PLL.  

 

The frequency of the audio master is dependent on 

the on the current audio sample rate (I.e the sample 

rate required by the format CD=44.1Khz and 

DVD=48khz etc) and this is set by the system micro 

via the MD, MC and ML_1700 lines from the Vaddis V. 

 

Clock Buffer 

 

IC301 

us used to buffer the audio master clock. The 

circuit is arranged so that each device that requires 

the audio master clock has it’s own driver these are 

seen as. 

 

MCLK_DAC0 - Pin 18 

MCLK_DAC1 – Pin 16 

MCLK_DAC2 – Pin 14 

MCLK_VADDIS – Pin 3 

MCLK_HDMI – Pin 9

 

 

We also run the 

Mute Line

 from the Vaddis V 

IC301

 

this can be seen on Pin 12 and drives transistor 

TR401

, the transistor pulls the relays 

RLY400, 

RLY500, RLY600

 to ground and un-mutes the audio 

outputs.  

 

IS2 Audio Data 

 

IC302

 and 

IC309

 are buffers for the 12S signals these 

ensure that the signals travelling to the DAC’s are 

point to point.  

IC302

 deals with the 

ALRCK

 and 

ABCLK

 and I

C309(NF DV78)

 the  

 

ADAT0,1,2

 all signal are split into three separate lines 

for the three stereo DACS.    

 

PSU Clock Divider 

 

IC304 a/b 

form a clock divide by 1, 2 or 4 to ensure 

the PSU clock is always either 

44.1kHz

 or 

48Khz

 (

See 

fig 1 

within the power supply description section).  

 

The circuit is fed from the 

ALRCLK

 (Audio clock) the 

selected PSUCLK is controlled by 

PSUFSO

 and 

PSUFS1

 

The output of the PSU circuit can be seen to leave 

IC305

 on pin 5 via R311. Please see 

Fig 1

 for PSU 

control information. 

 

The circuit will also switch the 

PSUCLK

 off when switching 

between sample rates (the PSU will free run when the 

PSUCLK is not present). 

 

SPDIF Output 

 

The SPDIF output consists of 

IC901 

implemented as a 

inline buffer and parallel output buffer. Gate A buffers the 

signal so that the SPDIF line from the VADDIS sees fewer 

loads and form a feed to the Optical output transmitter, 

gates B,C and D drive the SPDIF in parallel so that we can 

drive a 75ohm load adequately. The resistors at the output 

of IC901 are arrange so that the output will be 

500mV pk-

pk

 when the output is terminated with a 75 ohm load at the 

same time the output impedance of the circuit is 75ohms 

as required by the Sony Philips Digital Interface 

specification. 

  

Left and Right channel D to A stages 

 

The 

Wolfson WM8740

 stereo DAC ay location 

IC403

 

re5V(

A

) and a +3V3 supply along with the Digital 

Audio data lines already described in this guide. 

 

The Left channel output only will be described in this 

section. 

 

IC400B

 and associated components form a 2

nd

 order 

Bessel filter with a differential input and a gain of 1 this 

follow by a output buffer 

IC401B

, the gain of IC401B is 

control by the switching chip at location 

IC402

, in normal 

use the Gain of IC401B is set to 1.1 but in 

HDCD

 mode 

the 

IC402

 switches a second 10k resistor in parele with 

R413 and the gain is set to 2.2 allowing for the higher 

audio output required by the HDCD standard. 

 

C436 is an A.C coupling capacitor used to remove the few 

mV of offset that the DAC produces; D400 provides 

protection against from ESD. 

 

The all 

output relays

 are under control of the Vaddis V 

chip but will also mute the outputs instantly under mains 

failure conditions.  Switching drive is provided by TR401 

(MUTE_BUF) and TR400 (AC_PRES) the relays are in 

mute mode if either the input to TR401 is Low or if the 

input to TR400 is high.    

 

Please note:

 The 

Scart

 left/right audio is fed from the 

outputs of the left/right audio stages. 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for DiVA DV78

Page 1: ...DiVA Service Manual DV78 DVD Player Issue 1 0 ARCAM Bringing music movies to life...

Page 2: ...gram Parts list Main Board L960AY CCT diagram Component layout diagram Parts list Display Board L961AY CCT diagram Component layout diagram Parts list Transformers L924TX L925TX Mechanical Assembly Ex...

Page 3: ...quency select PSUFS1 Pin 11 IC305a PSUFS0 Pin 12 IC305a PSUCLK Output Pin 5 of IC305a 44 1 kHz 0 0 44 1 kHz 48 kHz 0 0 48 kHz 88 2 kHz 0 1 44 1kHz 96 kHz 0 1 48 kHz 176 4 kHz 1 0 44 1 kHz 192 kHz 1 0...

Page 4: ...power supply information The Infra red pick up at location RXI receives RC5 data and send the data to the Vaddis V on the main board via transistors TR2 and TR3 LED 2 is used to mix the rear panel RC5...

Page 5: ...age of non volatile storage of player settings region settings and bookmark data Clocks CLK27MV is the 27Mhz clock for video It is used to generate the 135Mhz clock for the Vaddis microprocessor and D...

Page 6: ...5 via R311 Please see Fig 1 for PSU control information The circuit will also switch the PSUCLK off when switching between sample rates the PSU will free run when the PSUCLK is not present SPDIF Outp...

Page 7: ...ll as Left and right audio signals are all present on the SCART output socket As the RGB and YUV signals share the same output port at the Vaddis V the player must be set to RGB SCART operation to hav...

Page 8: ...100N 100V MKS2 D3 UF4003 DO 41 C11 100N 100V MKS2 VP15V5 VN15V5 VN13V5_F1 VN9V_F2 VP5V VP3V3 VP12V VN35V6 R3 4K7 0W25 MF TR2 BC546B TO 92 R6 6K8 0W25 MF C31 22UF 63V YK VP5V DGND AC_PRES R9 1K0 0W25 M...

Page 9: ......

Page 10: ...R 37MG3T LED5 3D006 LED 3mm Red Green Tri Colour L 93WEGW R1 1M133 Resistor 0805 Surface Mount 0 125W 1 330R R2 1M133 Resistor 0805 Surface Mount 0 125W 1 330R R3 1M133 Resistor 0805 Surface Mount 0 1...

Page 11: ...27 28 29 30 31 32 33 34 35 36 37 38 39 40 CON100 3M 2540 ATDD 0 15 XATRESET DGND ATDD7 ATDD8 ATDD6 ATDD9 ATDD5 ATDD10 ATDD4 ATDD11 ATDD3 ATDD12 ATDD2 ATDD13 ATDD1 ATDD14 ATDD0 ATDD15 ATDMARQ ATDIOW A...

Page 12: ...DGND VCC RST GND IC201 LM809M3 2 63 SOT 23 C207 100N 16V 0603 3V3D DGND RESET RESET RESET CLK27M_VADDIS MCLK_VADD S 5 4 RP209D 33R 6 3 RP209C 33R 2 7 RP209B 33R 1 8 RP209A 33R 5 4 RP210D 33R 6 3 RP210...

Page 13: ...I4 15 I5 14 I6 13 I7 12 S0 11 S1 10 S2 9 IC305A 74HC151D SO 16 3V3D 3V3D 3V3D 3V3D VCC 16 GND 8 IC305B 74HC151D SO 16 VCC 14 GND 7 IC304C 74HC74D SO 14 3V3D PSU CLOCK DIVIDER GND 10 VCC 20 IC302C 74LV...

Page 14: ...ONP R426 47R 0W125 0805 R427 47R 0W125 0805 DGND 2 3 1 IC402A DG413DY SO 16 C421 100N 50V 0805 C423 100N 50V 0805 C422 100N 50V 0805 V 4 GND 5 V 13 VL 12 IC402E DG413DY SO 16 12VA 5VA 12VA DGND DGND 1...

Page 15: ...of 1 1 Cheapo version could have bipolar op amp but without feedback round coupling cap 2 3 1 8 4 IC501A OPA2134UA SO 8 R514 10K 0W125 0805 R519 1M0 0W125 0805 C531 33P 100V 0805 C533 100UF 16V NONP R...

Page 16: ...amp but without feedback round coupling cap 2 3 1 8 4 IC601A OPA2134UA SO 8 R614 10K 0W125 0805 R619 1M0 0W125 0805 C631 33P 100V 0805 C633 100UF 16V NONP R622 47R 0W125 0805 R623 47R 0W125 0805 DGND...

Page 17: ...C727 100N 50V 0805 R712 75R 0W125 0805 C737 470UF 25V YK C729 100N 50V 0805 D704 BAT54S SOT 23 1 3 4 2 L710 1000R 100MHz DLW31S C749 1N0 100V 0805 SVID_C_OUT DGND EMC_GND SVID_C_OUT_GND R736 0R0 0W12...

Page 18: ...ABLE_AV 16 9 SCART control signals ENABLE_AV 0 in when standby mode 1 when on 3V3 levels RGB_STAT is supposed to be 1V when driving 75R 16 9 0 when 4 3 output 1 when 16 9 output 3V3 levels 0 6 12 0V i...

Page 19: ...DGND DGND DGND DGND DGND C904 100N 50V 0805 3V3D DGND C912 100P 100V 0805 C906 100N 50V 0805 1 3 4 2 L903 1000R 100MHz DLW31S C913 100P 100V 0805 C917 10N 100V 0805 C907 100N 50V 0805 DGND SPDIF_OUT...

Page 20: ...lace these near power input 5V_DISPLAY DGND 3V3A For DACs R1007 1K0 0W125 0805 R1002 330R 0W125 0805 C1022 1N0 50V 0603 DGND C1024 1N0 50V 0603 DGND C1026 1N0 50V 0603 DGND 1 FIX1004 Dia 3 5mm C1028 1...

Page 21: ......

Page 22: ...Ceramic 10 16V 100N C237 2JD410 Capacitor SM 0603 X7R Ceramic 10 16V 100N C238 2JD410 Capacitor SM 0603 X7R Ceramic 10 16V 100N C239 2JD410 Capacitor SM 0603 X7R Ceramic 10 16V 100N C240 2JD410 Capac...

Page 23: ...pacitor Boxed Polypropylene 5mm Pitch 100V 5 680P C433 2DA168 Capacitor Boxed Polypropylene 5mm Pitch 100V 5 680P C434 2L033 Capacitor SM 0805 NPO Ceramic 5 100V 33P C435 2L033 Capacitor SM 0805 NPO C...

Page 24: ...410 Capacitor Boxed Polyester 5mm Pitch 5 100VDC 100N C614 2J410 Capacitor SM 0805 X7R Ceramic 10 50V 100N C615 2J410 Capacitor SM 0805 X7R Ceramic 10 50V 100N C616 2J410 Capacitor SM 0805 X7R Ceramic...

Page 25: ...M 0805 NPO Ceramic 5 100V 47P C745 2L210 Capacitor SM 0805 NPO Ceramic 5 100V 1N0 C746 2L210 Capacitor SM 0805 NPO Ceramic 5 100V 1N0 C747 2L210 Capacitor SM 0805 NPO Ceramic 5 100V 1N0 C748 2L210 Cap...

Page 26: ...ectrolytic Dia 5mm Pitch 5mm 100UF 25V C1018 2Z710B Capacitor Low Impedance Radial Electrolytic Dia 5mm Pitch 5mm 100UF 10V C1019 2Z722A Capacitor Low Impedance Radial Electrolytic Dia 8mm Pitch 5mm 2...

Page 27: ...T IC Quad Buffer 74HCT125D SMT IC201 5H809263 IC Micro Reset LM809M3 2 63 SOT 23 IC202 5L36750 IC Vaddis V DVD ZR36750 BGA 316 Package IC203 5H6432 7 IC Sdram 64Mbit K4S643232F TC70 IC204 5G24LC08 IC...

Page 28: ...100MHz L1010 7F007 Ferrite Bead SM0805 120R 100MHz L1011 7C033B Inductor 33UH 10 1 17A A823LY 330K R L1012 7F007 Ferrite Bead SM0805 120R 100MHz L1013 7C033B Inductor 33UH 10 1 17A A823LY 330K R L101...

Page 29: ...urface Mount 0 125W 1 56R R254 1M110 Resistor 0805 Surface Mount 0 125W 1 100R R255 1M110 Resistor 0805 Surface Mount 0 125W 1 100R R256 1M247 Resistor 0805 Surface Mount 0 125W 1 4K7 R257 1M247 Resis...

Page 30: ...05 Surface Mount 0 125W 1 680R R509 1M168 Resistor 0805 Surface Mount 0 125W 1 680R R510 1M168 Resistor 0805 Surface Mount 0 125W 1 680R R511 1M168 Resistor 0805 Surface Mount 0 125W 1 680R R512 1M310...

Page 31: ...0805 Surface Mount 0 125W 1 75R R715 1M075 Resistor 0805 Surface Mount 0 125W 1 75R R716 1M210 Resistor 0805 Surface Mount 0 125W 1 1K0 R717 1M210 Resistor 0805 Surface Mount 0 125W 1 1K0 R718 1M210 R...

Page 32: ...Resistor 0805 Surface Mount 0 125W 1 56R R1007 1M210 Resistor 0805 Surface Mount 0 125W 1 1K0 R1008 1H022 Resistor Metal Film 0 25W 1 22R REF200 5D4041 Voltage Reference Adjustable LM4041CEM3 ADJ SOT...

Page 33: ...IN Unscreened TR200 4D10KN Digital Transistor MMUN2211LT1 SOT23 Package TR400 4A849B Transistor BC849B SOT23 Package TR401 4AFMMT497 Transistor FMMT497 SOT23 Package TR800 4D10KP Digital Transistor MM...

Page 34: ...BLANK PCB DV78 DISPLAY BOARD 1 L961PB Note that G1 7 are deliberately reversed here to be the same as previous design software takes it into account ITEM2 1 ITEM3 1 LED2 SM RED SML 010 P6 REM_P LED2...

Page 35: ......

Page 36: ...SLR 37MG3T LED5 3D006 LED 3mm Red Green Tri Colour L 93WEGW R1 1M133 Resistor 0805 Surface Mount 0 125W 1 330R R2 1M133 Resistor 0805 Surface Mount 0 125W 1 330R R3 1M133 Resistor 0805 Surface Mount 0...

Page 37: ...condary voltages and r m s currents have been calculated and are tabulated against input voltage The model assumes the transformer regulation is made as poor as possible while meeting spec The equival...

Page 38: ...BE LESS THAN 1mm TO MINIMISE CAPACITIVE COUPLING WHICH WOULD PRODUCE SHORTED TURN FOR HIGH FREQUENCY CURRENTS 1 2 SCREEN TO BE MADE FROM MAXIMUM 0 05mm 2MIL FOIL 0 3mm 2 LAYERS MYLAR TAPE SECONDARY4...

Page 39: ...5 15 16 17 18 19 19 19 20 21 22 22 22 23 24 25 26 27 28 29 30 31 36 37 32 I II 33 III IV 34 V VI 35 16 VII VIII I VI VII II IV V VIII III 24 x2 x2 x9 18 x4 x2 x4 x15 x3 24 x7 x3 x4 USE TO SECURE TRANS...

Page 40: ...Display Board 32 L961CA Cable FFC 1 25mm 32 Way 65mm 33 L962CA Cable FFC 1mm 16 Way 165mm 34 L963CA DVD Drive Cable 40 Way IDC 160mm 35 L964CA DVD Drive Power Cable 4 Way 275mm 36 SL025 SL025 Label Cl...

Page 41: ...ARCAM All parts can be ordered via spares arcam co uk Pembroke Ave Waterbeach Cambridge CB5 9PB ENGLAND TEL 44 0 1223 203 200 FAX 44 0 1223 863 384...

Reviews: