Cambridge Audio Azur 840C Service Manual Download

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Cambridge Audio Azur 840C CD Player

AP19129/5

C DSP Flash Circuit Diagram

A12

A10

A14

A15

A18

WE_FLASH#

A17

A16

A13

CS_FLASH#

A11

OE_FLASH#

+5V

1_U7

2_U9

1_U9

MUTE_PIC

CN8

2MM

HEAD

SERIAL_RX

SERIAL_TX

OUT

CN9

2MM 9W

HEAD

U_R

ESET

U_SS

U_SCLK

U_MO

U_INTREQ

U_MISO

A11

A13

A14

A17

Vcc

A16

A15

A12

A10

IO7

IO6

IO5

IO4

IO3

GND

IO2

IO1

1/O0

U32

AT49B

V002AN

3.3V

CN7

2MM 3W

HEAD

R72

100R

0805

SERVO_SPDIF_OUT

C160

100N

50V

X7R

0805

C164

100N

50V

X7R

0805

RL1:A

ME2-5S

RL2:A

ME2-5S

+10V

UNREG

R141

4K7

0805

R142

10K

0805

R143

100K

0805

C212

35V

R144

8K2

0805

R145

2K2

0805

D17

1N4001

AC_5V

D18

1N4001

D20

1N4148

R146

10K

0805

REL

R151

100R

R131

4K7

0805

D19

1N4148

R154

10K

0805

low = mute

high

unmute

high

= unmute

relay

STAND

CONTROL

D29

1N4004

RL3:A

ME2-5S

MPSA14

807-25

R140

62R

C270

470U

16V

To enhance viewing, please print to A3

Summary of Contents for Azur 840C

Page 1: ...e Fully Differential Linear Phase Bessel Filter Digital output word widths supported 16 20 24 bit Frequency Response 20Hz 20kHz 0 1dB Digital input sampling 32kHz 44 1kHz 48kHz 88 2kHz frequencies supported 96kHz 176 4kHz 192kHz THD 1 KHz 0dBFs 0 0005 Digital output sampling 32 kHz 192 kHz pass through frequencies supported including 44 1 kHz for CD 48 kHz 96 kHz 192 kHz up sampled THD 1Khz 10dBFs...

Page 2: ...tage Select Switch PCB Layout Bottom Side 20 Voltage Select Switch PCB BOM 21 DAC DSP Circuit Diagram Abus 22 DAC Test Signals Main Signal Paths General 23 DAC DSP Circuit Diagram DSP 24 DAC Test Signals Main Signal Paths General 25 DAC DSP Circuit Diagram Filters 26 DAC Test Signals Main Signal Paths Left Channel 27 28 DAC Test Signals Main Signal Paths Right Channel 29 30 DAC DSP Circuit Diagram...

Page 3: ...s 5 Any unauthorised design alterations or additions will void the manufacturer s warranty furthermore the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom 6 When servicing care should be taken to observe the original routing and dressing of the leads and it should be confirmed that they have been returned to normal after re assembly Notes on chi...

Page 4: ...that safety and EMC critical components are replaced with Cambridge Azur approved parts only CLASS 1 LASER PRODUCT NOTES ON HANDLING THE OPTICAL PICK UP BLOCK OR BASE UNIT The laser diode in the optical pick up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load etc on clothing and the human body During repair pay attention to el...

Page 5: ...Cambridge Audio Azur 840C CD Player Exploded Diagram To enhance viewing please print to A3 5 ...

Page 6: ...A11V 7 PY1220 8584 001010E301 Azur 840C UK EU Black Front Panel Assy 7 PY1221 8584 001000E301 Azur 840C UK EU Silver Front Panel Assy 8 PY1222 4006 840001E000 Azur 840C Display Module MBCF00003B00V0 RCL 9 PY1223 6574 010002E000 01 Azur 840C Front Panel B Artwork Print Cool Grey 7C Black 9 PY1224 6574 010002E000A01 Azur 840C Front Panel S Artwork Print Coll Grey 8C Silver 10 PY1225 9484 001000E041 ...

Page 7: ...L TO SINGLE ENDED UNBALANCED O P BALANCED O P DAC WDCLK BITCLK SDATA L RESET MUTE DAC SET UP I F DAC2 MCLK DAC PCB MECH AND SERVO PCB B C P O V R E S H C E M SPDIF I P SWITCHING CD SERVO TO LCD CONNECTIONS PSU MICROCONTROLLER DSP INTERFACE MICRO TO LCD DOT MATRIX MICROCONTROLER PIC RS232 IR UNMOD I P O P I P IR MOD DRAWER OPEN CLOSE CONNECTIONS DRAWER OPEN CLOSE CONNECTIONS LCD DRAWER SPEED CONTRO...

Page 8: ...R15 10K H0 14 A1 6 GND 8 A0 7 W0 12 L1 3 L0 13 H1 1 W1 4 A2 5 SDA 10 SCL 9 VCC 16 U3 DS1803 5V_SERVO 5V_SERVO 1 2 3 4 5 6 7 8 9 CN6 JST 2MM S9B PH KS 1 2 3 4 5 6 7 8 CN7 JST 2MM S8B PH KS R18 10K R19 10K SEG15 16 SEG14 15 SEG13 14 SEG12 13 SEG11 12 SEG10 11 SEG9 10 SEG8 9 SEG7 8 SEG6 7 SEG5 6 SEG4 5 SEG3 4 SEG2 3 SEG1 2 SEG0 1 SEG16 17 SEG17 18 SEG18 19 COM1 20 COM2 21 COM3 22 COM4 23 NC 24 CN10 L...

Page 9: ...Cambridge Audio Azur 840C CD Player AP19135 3 Front Panel Board Layout Top Side To enhance viewing please print to A3 9 ...

Page 10: ...Cambridge Audio Azur 840C CD Player AP19135 3 Front Panel Board Layout Bottom Side To enhance viewing please print to A3 10 ...

Page 11: ...6V Pitch 2 5mm Height 5 2mm 4 C7 C11 C13 C18 1 U 1 R E V I E C E R R I P O S T V 3 S S 6 3 8 1 P O S T Mount 13 5mm height from PCB Please support usingfoam pad spacer 2 U 1 C I P P I A 7 7 8 F 6 1 C I P Programme with AP20058 2 Please add version label See AP Service Dept PY983 DS18030 050 DIGITAL PO T 4118 030051E200 1 U3 4 U 1 C I P P I A 8 0 5 C 2 1 C I P Programme with AP20231 1 Please add ve...

Page 12: ...0uF 25V 1 2 3 CN9 GND R71 56K C43 10uF 25V R70 56K C35 0 1uF 5V L CH R CH 8V R81 47K C36 10pF R79 20K R72 20K C37 220uF 16V 1 2 3 CN10 GND L CH R CH GND 1 2 3 4 5 CN13 DIG DATA 1 2 CN14 MCLK R68 100R R69 100R 3 4 5 RL1 B 1 2 RL1 A 6 7 8 RL1 C R83 120R 0 5W R88 1K 14 5V Q3 8050 Q4 8050 C55 47uF 16V R89 330k D1 IN4148 R90 390R D7 IN4004 R87 100R Q6 9012 R85 560R R86 3K9 C63 4 7uF 16V D6 IN4004 1 2 3...

Page 13: ...21 PVCC4 22 OUT 4 23 PW GND 24 U6 TA2092N R15 10K R39 10K R14 10K R13 10K R12 10K 5V R11 10K R6 220K R7 68K R5 15K R9 47K C8 0 015uF C76 47pF C74 47uF 16V R8 10K C75 0 01uF C6 0 0027uF 1 2 3 CN1 DIGITAL OUT 5V R10 47R C11 0 047uF C10 47uF 16V C9 47uF 16V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN16 MECH 1 2 3 4 5 6 CN15 MOTOR DRIVE 8V C56 220uF 16V C59 100nF R64 10K 5V C58 100nF C57 100nF R42 3K3 C...

Page 14: ...Cambridge Audio Azur 840C CD Player AP12927 8 CD Servo Board Layout Top Side To enhance viewing please print to A3 14 ...

Page 15: ...Cambridge Audio Azur 840C CD Player AP12927 8 CD Servo Board Layout Bottom Side To enhance viewing please print to A3 15 ...

Page 16: ...1011 004016 000 220K 0 125 W Metal Film Resistor 1 R6 1012 204016 000 3pF Ceramic COG 50V 5mm Pitch 1 C1 15pF Ceramic COG 50V 5mm Pitch 2 C16 17 1100 150043 000 25pF Ceramic COG 50V 5mm Pitch 2 C80 81 1100 250042 000 47pF Ceramic COG 50V 5mm Pitch 1 C76 1100 470043 000 100pF Ceramic COG 50V 5mm Pitch 1 C73 470pF Ceramic 50V 5mm Pitch 2 C24 25 1100 471043 000 0 0 0 3 4 0 2 0 1 0 0 1 1 7 8 C 1 h c t...

Page 17: ...P m m 5 n i P 2 z H M 4 4 3 9 6 1 7 2 0 Y P 0 9 9 2 8 2 7 3 7 0 0 6 1 2 X 1 h c t i P m m 5 n i P 2 z H M 8 2 7 3 7 1 6 5 Y P 1 0 0 0 0 0 2 0 0 0 0 3 2 1 2 7 1 N C 2 T S J h c t i P m m 2 y a W 2 1 0 0 0 0 0 3 0 0 0 0 3 2 1 N C 1 T S J h c t i P m m 2 y a W 3 0 0 0 0 0 0 5 0 0 0 0 3 2 8 2 N C 2 T S J h c t i P m m 2 y a W 5 0 0 0 0 0 0 6 0 0 0 0 3 2 5 1 N C 1 T S J h c t i P m m 2 y a W 6 0 0 0 0 ...

Page 18: ...bridge Audio Azur 840C CD Player AP17977 2 Voltage Select Switch PCB Schematic J2 FROM J4 Common SW1 VOLTSELECT RF1002B 115 230V Marking J1 BROWN 230V J3 BLACK 115V To enhance viewing please print to A3 18 ...

Page 19: ...Cambridge Audio Azur 840C CD Player AP17977 2 Voltage Select Switch Board Layout Top Side To enhance viewing please print to A3 19 ...

Page 20: ...Cambridge Audio Azur 840C CD Player AP17977 2 Voltage Select Switch Board Layout Bottom Side To enhance viewing please print to A3 20 ...

Page 21: ... 0 0 0 2 0 1 0 6 0 4 2 1 W S 1 r o t c e l e S e g a t l o V B 2 0 0 1 F R Cambridge Audio Azur 840C V2 Voltage Selector PCB Assembly BOM CONNECTORS Note resistors capacitors and other generic electronic components are not usually stocked by the manufacturer Please obtain these locally 21 ...

Page 22: ...0 9 8 U8 C VCC 3 3V 13 12 11 U8 D VCC 3 3V R28 0R 0805 CS8416_RXP0 MULTIPLEXER 1 MULTIPLEXER 2 1E 1 S1 2 1 IN3 3 1 IN2 4 1 IN1 5 1 IN0 6 2 IN3 13 2 IN2 12 2 IN1 11 2 IN0 10 GND 8 2E 15 SO 14 1Y 7 2Y 9 VCC 16 U9 CS8406_TXP 5V_DIG C20 100N 50V Y5V SM 0805 SO1_U9 SO2_U9 fs 44 1kHz fs 48kHz min servo spdif pass through fs 44 1kHz spdif input pass through R29 1K 0805 R31 430R 0805 R32 91R 0805 1 2 3 CN...

Page 23: ...1 5 e p o c s l a n g i s a t a d l a i r e s s u o u n i t n o C 3 V 3 d e t c e l e s 2 r o 1 P I 2 r o 1 P I x a o c F I D P S 2 n i p 8 U l a t i g i D 1 6 e p o c s l a n g i s a t a d l a i r e s s u o u n i t n o C 3 V 3 P S D o t 0 h c X R F I D P S o t n o i t c e l e s P I r e t f a l a n g i s F I D P S 3 n i p 9 U l a t i g i D 1 7 e p o c s l a n g i s a t a d l a i r e s s u o u n i ...

Page 24: ... PPI11 36 PF7 SPISEL7 PPI12 37 PF6 SPISEL6 PPI13 38 GND 39 GND 40 GND 41 GND 42 GND 43 GND 44 VDDEXT 45 PF5 SPISEL5 PPI14 46 PF4 SPISEL4 PPI15 47 PF3 SPISEL3 PPI_FS3 48 PF2 SPISEL2 49 PF1 SPISEL1 TMRCLK 50 PF0 SPISS 51 VDDINT 52 SCK 53 MISO 54 MOSI 55 GND 56 VDDEXT 57 DT1SEC 58 DT1PRI 59 TFS1 60 TSCLK1 61 DR1SEC 62 DR1PRI 63 RFS1 64 RCLK1 65 VDDINT 66 DT0SEC 67 DT0PRI 68 TFS0 69 GND 70 VDDEXT 71 T...

Page 25: ... Digital audio Word CLK CD selected With disc playing 3V3 square wave 44 1kHz for 44 1kHz sample freq from CD scope e p o c s e v a w e r a u q s z H M 6 7 5 4 2 3 V 3 k c o l c r e t s a m X T F I D P S 1 2 n i p 2 1 U l a t i g i D 2 7 1 18 2 Digital U12 pin 14 To SPDIF TX Digital audio Data SPDIF I P or CD With disc playing 3V3 Continuous serial data signal scope 19 2 Digital U12 pin 13 To SPDI...

Page 26: ...175 47U 25V EL C179 47U 25V EL R68 100R 1206 R69 100R 1206 R73 100R 1206 R74 100R 1206 C182 470N 50V X7R SM C184 220N 50V X7R SM R168 10R 0805 R170 10R 0805 C231 47N 16V ECHU SM 1206 C232 47N 16V ECHU SM 1206 C198 1N 50V NP0 0603 0603 C199 1N 50V NP0 0603 0603 15V 15V C233 47N 16V ECHU SM 1206 C235 47N 16V ECHU SM 1206 C203 1N 50V NP0 0603 0603 C214 1N 50V NP0 0603 0603 D25 BYG10G D26 BYG10G D27 B...

Page 27: ... P O t n e r r u c e v f o e g a t l o v C D l i a r d i M 2 n i p 8 3 U e g a t l o V 4 6 2 r e t e m t l o v c d V 8 2 C A D f o P O t n e r r u c e v f o e g a t l o v C D l i a r d i M 2 n i p 7 3 U e g a t l o V 4 7 2 r e t e m t l o v c d V 8 2 f e r e g a t l o v C D l i a r d i M 3 n i p 7 3 U e g a t l o V 4 8 2 r e t e m t l o v c d V 0 4 e g a t l o v f e r e c r u o s t n e r r u C 3 n...

Page 28: ...V p p 2 2Vrms scope approx 0 001 THD N 22K BW THD meter 0 0006 THD N 22K BW bal a c pins 4 5 U39 THD meter Voltage Analogue Less than 5mV dc voltmeter THD meter 1kHz sine wave 6 3V p p 2 2Vrms scope approx 0 0006 THD N 22K BW THD meter THD Measurements Measurements taken using Audio Precision System 1 with X1 1M scope prob 7 n i p 0 4 U 4 9 3 O P unbalanced stage dc voltage ac waveform THD measure...

Page 29: ... Voltage U33 pin 2 Mid rail DC voltage of ve current O P of DAC 2 8V dc voltmeter 45 4 Voltage U34 pin 2 Mid rail DC voltage of ve current O P of DAC 2 8V dc voltmeter r e t e m t l o v c d V 8 2 f e r e g a t l o v C D l i a r d i M 3 n i p 3 3 U e g a t l o V 4 6 4 r e t e m t l o v c d V 0 4 e g a t l o v f e r e c r u o s t n e r r u C 5 n i p 3 5 U e g a t l o V 4 7 4 r e t e m t l o v c d V ...

Page 30: ... scope approx 0 001 THD N 22K BW THD meter 0 0006 THD N 22K BW bal a c pins 4 5 U35 THD meter Voltage Analogue Less than 5mV dc voltmeter THD meter 1kHz sine wave 6 3V p p 2 2Vrms scope approx 0 0006 THD N 22K BW THD meter Current to voltage O P ve dc voltage ac waveform THD measurement CD selected With disc playing 1kHz 0dB FS tone 6 n i p 4 3 U 4 4 5 Current to voltage O P ve dc voltage ac wavef...

Page 31: ...CE 30 IO7 29 IO6 28 IO5 27 IO4 26 IO3 25 GND 24 IO2 23 IO1 22 1 O0 21 A0 20 A1 19 A2 18 A3 17 U32 AT49BV002AN 3 3V DSP 1 2 3 CN7 2MM 3W ST HEADER R72 100R 0805 SERVO_SPDIF_OUT C160 100N 50V X7R SM 0805 C164 100N 50V X7R SM 0805 1 2 RL1 A ME2 5S 1 2 RL2 A ME2 5S 10V UNREG R141 4K7 0805 R142 10K 0805 R143 100K 0805 C212 1U 35V EL R144 8K2 0805 0805 R145 2K2 0805 D17 1N4001 AC_5V D18 1N4001 D20 1N414...

Page 32: ...0805 R139 22K 0805 1 2V 10V_L VI 1 SHDN 3 GND 2 VO 5 BYP 4 U45 LT1761 2 8VREG C224 10U 35V EL C225 47N 16V ECHU SM C226 10N 50V X7R SM 0805 C227 10U 35V EL 2V8_VREF_L etc 60mA C113 10U 35V EL C135 10U 35V EL C62 100N 50V X7R SM 0805 C63 47N 16V ECHU SM C47 100N 50V X7R SM 0805 C128 100N 50V X7R SM 0805 C130 100N 50V X7R SM 0805 C132 100N 50V X7R SM 0805 C134 100N 50V X7R SM 0805 C114 100N 50V X7R ...

Page 33: ...Cambridge Audio Azur 840C CD Player AP19129 4 DAC DSP Board Layout Top Side To enhance viewing please print to A3 33 ...

Page 34: ...Cambridge Audio Azur 840C CD Player AP19129 4 DAC DSP Board Layout Bottom Side To enhance viewing please print to A3 34 ...

Page 35: ... R R 0 3 3 3 7 1 R 9 6 1 R 5 5 1 R 2 1 1 R 4 W 5 2 1 0 r o t s i s e R K 0 1 1 7 1 R 3 1 1 R 2 W 5 2 1 0 r o t s i s e R K 5 9 5 1 R 7 2 1 R 2 W 2 0 e p y t F L E M r o t s i s e R K 2 1 8 5 1 R 6 5 1 R 8 2 1 R 6 2 1 R 4 W 2 0 e p y t F L E M r o t s i s e R M 1 B C P e v o b a s d a e l d e m r o f n o t n u o m 3 3 1 R 1 n o b r a C W 2 W 2 R 0 2 2 8 3 1 R 6 3 1 R 2 W 3 6 0 0 r o t s i s e R 3 K...

Page 36: ... Q 1 Q 5 5 2 7 1 8 C B N P N PY962 RED LED MV50640 1 D1 IR housing AP17339 3 with LED MV50640 TSOP1836 IR Receiver SMT DIODE BYG10G 8 D2 D21 D23 D25 D28 PY1191 SCHOTTKY RECTIFIER DIODE 1A SB1H100 4 D3 D6 SUB 1 MBR1100TR International rectifier 0 3 D 9 2 D 4 1 D 7 D 0 1 4 0 0 4 N 1 E D O I D SMT DIODE BAS16 2 D15 D16 8 1 D 7 1 D 2 1 0 0 4 N 1 E D O I D 0 2 D 9 1 D 2 8 4 1 4 N 1 E D O I D 6 2V ZENER...

Page 37: ...KS 1 CN8 2MM 9W ST HEADER B9B PH KS 1 CN9 2 5MM 10W ST HEADER B10B XH A 1 CN10 Phono Socket vertical dual AV2 8 4 13EL 1 CN12 white insert top red insert bottom gold plated e p y t g n i h c t a l 4 1 N C 3 1 N C 2 A 2 3 0 5 e l a M T K S R L X 3 5mm JACK SKT CKX 3 5 12 1 CN100 24 576MHz CH015M2457600 AFHJ00 1 X1 A m 0 5 1 n i m c d I 4 L 2 L 3 H u 7 4 ME2 5S 3 RL1 RL3 3 F 1 0 0 3 0 6 H W e s u f ...

Page 38: ... L N E CN3 IEC PCB MOUNT Rong Feng SS 7B 1 1 2 3 4 5 6 7 8 CN1 2 5MM 8W ST HEADER 6 7 8 RL1 C RELAY 1 2 RL1 A RELAY 3 4 5 RL1 B RELAY 1 2 RL2 A RELAY 3 4 5 RL2 B RELAY 6 7 8 RL2 C RELAY ANALOG A ANALOG A ANALOG B ANALOG B GND A GND B DIGITAL DIG GND ANALOG A ANALOG A ANALOG B ANALOG B GND A GND B DIGITAL DIG GND RELAY 10V 1 2 3 4 5 6 7 8 9 10 CN2 2 5MM 10W ST HEADER FROM TRANSFORMER TO TRANSFORMER...

Page 39: ...Cambridge Audio Azur 840C CD Player AP19125 3 Mains PCB Board Layout Top Side To enhance viewing please print to A3 39 ...

Page 40: ...Cambridge Audio Azur 840C CD Player AP19125 3 Mains PCB Board Layout Bottom Side To enhance viewing please print to A3 40 ...

Page 41: ...mm 1 CN1 AP13570 1 10uH 5A Mains Inductor 2 L1 L2 T68 2A 32 5 Turns with UL Heatsink 2 L R 1 L R 2 1 1 E M V 5 y a l e R 5 0 0 1 1 E M T2AL 2A slow blow fuse 20mm LBC low breaking capacity 1 FU3 4030 618002 001 20MM Fuse Holder 3 FU3 4034 000030 000 1 0 0 0 0 1 0 5 0 1 3 0 4 3 U F 3 r e v o C e s u F CAPACITORS CONNECTORS MISCELLANEOUS Cambridge Audio Azur 840C CD Player Mains PCB BOM Note resisto...

Page 42: ...Cambridge Audio Azur 840C CD player IC Pin Layout Details TA2153FN Servo PCB U1 TC9462FG Servo PCB U2 42 ...

Page 43: ...MCU TMP87EP26F 1J15 Servo PCB U3 TA2092N Servo PCB U6 7808 Servo PCB U7 7805 Servo PCB U8 DAC PCB U17 U25 U27 U29 U31 U36 C8050D Servo PCB Q7 Q8 Q11 Q12 43 ...

Page 44: ...9014C Servo PCB Q13 C8550 Servo PCB Q9 Q10 9015C Servo PCB Q1 TSOP1836SS3V Front Panel PCB U1 PIC16F877A I P Front Panel PCB U2 DS18030 050 Front Panel PCB U3 44 ...

Page 45: ...PIC12C508A I P Front Panel PCB U4 BA6218 Front Panel PCB U5 BC337 Front Panel PCB Q1 Q2 Q3 Q4 TSOP1836 DAC PCB U1 OP4N25 DAC PCB U2 4011 DAC PCB U3 RX179AT DAC PCB U4 U5 45 ...

Page 46: ...74VHC14 DAC PCB U6 U15 74VHC153 DAC PCB U7 74HCT153 DAC PCB U9 74VHC32 DAC PCB U8 TX179AT DAC PCB U10 CS8416CZ DAC PCB U11 46 ...

Page 47: ...CS8406CZ DAC PCB U12 ADSP BF532BSTZ400 DAC PCB U13 7815 DAC PCB U14 U22 U49 U51 47 ...

Page 48: ...7915 DAC PCB U16 U24 LM1117T_3 3 DAC PCB U18 U26 74VHC125 DAC PCB U19 74HCT125 DAC PCB U20 DS1818 DAC PCB U21 48 ...

Page 49: ...74HCU04 DAC PCB U23 MAX202CSE DAC PCB U28 LT1963AET DAC PCB U30 AT49BV002AN70TU DAC PCB U32 OPA8421D DAC PCB U33 U34 U37 U38 49 ...

Page 50: ...DGN DAC PCB U35 U39 OPA2134UA DAC PCB U40 U41 U46 U50 U52 U53 LT1761ES5 BYP DAC PCB U42 U44 LT1761ES5 2 8 DAC PCB U43 U45 7905 DAC PCB U47 U48 AD1955ARS DAC PCB U130 U131 BC807 25 DAC PCB Q2 Q3 Q5 Q7 Q8 Q9 50 ...

Page 51: ...MPSA14 DAC PCB Q4 Q6 TIP31 DAC PCB Q10 Q11 BC817 25 DAC PCB Q1 Q12 Q13 Q17 Q18 51 ...

Page 52: ...Circuit Description To Follow 52 ...

Page 53: ...ontroller chip Type is Microchip PIC16F877A I P and ident on PCB is U2 inside the 840C CD Player Equipment Required 1 x 840C CD Player with mains lead 1 x Desktop PC or Laptop with Windows XP Service Pack 2 installed and with one 9 way D Type serial communications port free 1 x 9 way female female D Type Null Modem Cable Example cable to use is Product Code 976 880 from Farnell http uk farnell com...

Page 54: ...has switched on and is ready to be used i e No Disc is displayed on the front panel LCD press the Menu button on the front panel 4 times until SOFTWARE VERSION XX YYY Z Z is displayed on the front panel LCD XX is the DSP version number YYY is the DSP build number and Z Z is the PIC version number Note down the full software version number 4 Switch the 840C off using the Power On Off switch on the ...

Page 55: ...eady to receive new software 5 Load the 840C loader software on your PC or Laptop by pressing Start Programs 840C then select the Loader icon to start up the loader software 6 The picture below shows the first screen that appears on your PC screen Select the number of the communications Comm port that you plugged the Null Modem into on your PC or Laptop then press OK 7 The window that now appears ...

Page 56: ...e 9 Select the Load File button corresponding to PIC Software Download 10 This will then bring up a browse menu Please locate the latest PIC software the file extension is HEX for the 840C and press Open 11 The loader window will now display File Loaded VX X where X X is the version number as shown below 56 ...

Page 57: ...button corresponding to PIC Software Download to start the process Programming PIC Processor will now display on the PC screen and the progress bar will start to move Also Loading PIC will be displayed on the 840C front panel LCD 57 ...

Page 58: ...ime during the process there is a failure an error message will be displayed If this occurs please repeat the steps above If the problem persists please seek advice from our servicing department 15 Switch the unit off via the On Off switch on the rear panel The PIC has been successfully updated Upgrade Instructions DSP Software 58 ...

Page 59: ...e 840C via the On Off switch on the rear panel 3 Select the Load File button corresponding to DSP Software Download 4 This will then bring up a browse menu Please locate the latest DSP software the file extension is BIN for the 840C and press Open 5 The loader window will now display File Loaded as shown below 6 Now press the Download Code button corresponding to DSP Software Download to start the...

Page 60: ...the process is complete the program will display the following Also the 840C will return to its Standby mode 8 If at any time during the process there is a failure an error message will be displayed If this occurs please repeat the steps above If the problem persists please seek advice from our servicing department 60 ...

Page 61: ...cture above and BIN build version is 065 see item 4 DSP picture above 2 Switch the unit off via the On Off switch on the rear panel 3 Remove 9 way D Type Null Modem cable from the 840C 4 Switch the unit on and place a CD in the tray 5 Close the CD tray and play the CD 6 Test all front panel buttons and audio outputs If the unit is functioning correctly then the upgrade is complete The DSP has been...

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