NAD C-660 Service manual
SERVICE MANUAL
SERVICE MANUAL C660
MODEL : C660
NAD
NAD 2001
NAD ELECTRONICS INTERNATIONAL
TORONTO
AUDIO CD RECORDER
NAD
SERVICE MANUAL
C660
AUDIO CD RECORDER
C660
AUDIO CD RECORDER
-29-
OVERALL WIRING DIAGRAM 1
CD-RW Board
ANALOG VOLUME
CD-P Board
PWR BoardI/O Board
Front Board H/P & OPT_IN JACK Board
30
11
21
1
1
21
26
1
20
5V
5VA
GND
GND
M12V
NC
1 8
PICK -UPSLEDSPINDLE
PWR_CTL
5V(U-COM)
12VM
DGND
MGND
5VM
AGND
5VA
PWR_FA I L
1 9
PICK -UPSPINDLE
5 1
F4F2
F1
F3
6
CD-RW
LoadLoad
1
26
Sled
DownloadDownload
10
1
1
30
1
F1
CN803
CN805
LOUT
ROUT
RGND
RIN
LOUT
LGND
LIN
ROUT
RGND
RIN
LOUT
LGND
LIN
ROUT
6
1
CN805
PN105
F2F1F2
-34V
F1
-34V
-34V
-34V
GND
FLD_RST
GND
FLD_TXD
KEYIN_1
RMC_IN
FLD_CS
FLD_CLK
5VF
5VU
KEYIN_2
GND
KEYIN_0
GND
F2F1F2
-34V
F1
-34V
-34V
-34V
GND
FLD_RST
GND
FLD_TXD
KEYIN_1
RMC_IN
FLD_CS
FLD_CLK
5VF
5VU
KEYIN_2
GND
KEYIN_0
GND
F4
PN511
5. RED
1. HP_L.
F4
P505
PN503
5. RED
1. HP_L.
F3
1.FLD_CS...20.F2
PN512
F2
PN508
6. OPT_IN
1. NC
F2
6. OPT_IN
1. NC
11
HP_R
MPREQ
NC
HP_R
GND
HP_L
NC
GNDF
GND34
5VF
-34V
PN803
6 1
5VNCNC
NC
GND
OPT_IN
PN8601
PN901
PN509
9. PWR_FAIL.....1. PWR_CTL
DIG_IN
MPREQ
CDR_EMPH
CDR_EMPH_OUT
CDP_33M
GND
P_CLK
P_DATA
P_LRCK
GND
CDP_DOUT
SW_STATE
P_DAMOD
GND
DIG_F_IN
PWR_MUTE
GND
M12V
AGND
5VD1
GND
-15V
GND
REC_TXD
REC_RXD
GND
OPT_IN
MCLK
CDR_CLK
CDR_LRCK
GND
S_M CK
GND
BCK
DATA
CDR_DATA
DAMOD
GND
AD_CLK
AD_LRCK
AD_DATA
LRCK
CDR_MUTE_OUT
XRST
CDP_MUTE_OUT
CDP_EM PH_OUT
GND
HP_L
HP_ R
PWR_MUTE
CDR_EMPH_OUT
DUB_SEL
R_DOUT
P_DOU T
DIG_IN
EXT_RM C
OPT_IN
MCLK
CDR_CLK
CDR_LRCK
GND
S_M CK
GND
BCK
DATA
CDR_DATA
DAMOD
GND
AD_CLK
AD_LRCK
AD_DATA
LRCK
CDR_MUTE_OUT
XRST
CDP_MUTE_OUT
CDP_EM PH_OUT
GND
HP_L
HP_ R
PWR_MUTE
CDR_EMPH_OUT
DUB_SEL
R_DOUT
P_DOU T
DIG_IN
EXT_RM C
6. F+
...
1. 5VF
5V
6 1
P_DAM OD
GND
P_DA M OD
HP_ R
1 8
PN402
CN401
CN901
PN401
PN403
GND
EXT_RMC
XRST
CDP_MUTE
CDP_EMPH_OUT
GND
HP_L
HP_R
DGND
5VD2
+15V
+12V
-12V
12
15V
GND
CN403
CN701 CN904
PN8901
PN507
CN201
LoadLoad
Download
Download
PN506
PN203
P202
PN201
PN101
AC2
AC1
PN504
PN502
PN501
CN802
CN801
-30-
OVERALL BLOCK DIAGRAM
Drive
ext
Optical
Digital
RF Amp
EPROM
AT27LV010A
ATMEL
SERVO DSP
+ DECODER
SERVO DSP
+ ENC/DEC
MUXMUX
SRC
CS8420
CIRRUS
MUX
Buffer
Buffer
u-COM
u-COM
ANALOG
DIGITAL
OPTICAL
AUTOCDSV
TRACK TOTAL REMAIN TIME
SRC
CD R W
ERASE
FINALIZE
RECORD
SYNC
DUBBING
COPY PROHIBIT
DUAL RANDOM PROG
REPEAT 1 ALL
RANDOM PROG
REPEAT 1 ALL
MP3
X2 X4
HD CD
R
-A -60 -40 -20 -10 -3 0 3dB
L
TITLE CHP
DVD
TRACK TOTAL REMAIN TIME
ANALOG
DIGITAL
OPTICAL
AUTOCDSV
TRACK TOTAL REMAIN TIME
SRC
CD R W
ERASE
FINALIZE
RECORD
SYNC
DUBBING
COPY PROHIBIT
DUAL RANDOM PROG
REPEAT 1 A-B ALL
RANDOM PROG
REPEAT 1 A-B ALL
MP3
X2 X4X2 X4
HD CD
HD CDHD CD
R
- -60 -40 -20 -10 -3 0 3dB
L
RR
- -60 -40 -20 -10 -3 0 3dB - -60 -40 -20 -10 -3 0 3dB
LL
TITLE CHP
DVD
TRACK TOTAL REMAIN TIME
FL DRIVE
KEY
Drive
(Spindle,Focus,Tracking)
RF Amp
CDP
CDRW
ANALOG
POWER
I/O
OPTIC COAX
FPGA
Sled
DAC DAC ADC
MUX
S/WS/W
MUX
FPGA
HDCD & MP3
CS493302
CIRRUS
AK4393
AKM
AK5351
AKM
AK4393
AKM
-31-
BLOCK DIAGRAMS
1. CD-Play Block Diagram
I / V AMP
RF Amplifier
(CXA2581N :Sony)
Equalizer
ALPC
Focus Error
Tracking Error
LD
Driver
- Controller
(H8/3062:Hitachi)
System Control
Read Channel
Servo Processor
Sled Servo
Focus, Tracking
(M63021FP:
Mitsubishi
)
Spindle
motor
Stepping
Sledmotor
Pick-
up
(SF-P151EXV
:Sanyo)
disc
Digital Servo Processor
(CXD 3030R:Sony)
Focus Servo
Tracking Servo
Spindle Servo
EFM decoding
CD-DA Decoder
ATAPI Interface
1Mbit DRAM
1bit DAC
FPGA
(XC10TQ114:
XILINX
XILINX)
CDDA/MP3 Switching
Serial to Parallel
Data conversion
CDR -Controller
CDR FPGA
HDCD &MP3
CDP Dout
-32-
2. CD-Record Block Diagram
I / V AMP
LD
Driver
RF Amplifier
(CXA2551R:Sony)
Equalizer
ALPC
Focus Error
Tracking Error
Wobble Detect
Spindle
Driver
(BA6664
: Rohm)
LD
Driver
Encoder/Decoder
(OTI9790:OAK Technology)
CD-Encode
EFM Encode
CD-Decode
LPM
ATIP CLV Control
ATAPI I/F
Digital Servo Processor
Focus Servo
Tracking Servo
Sled Servo
Spindle Servo
EFM decoding
FPGA
(XC30TQ114
:
XILINX
XILINX)
CDDA/MP3
Switching
Serial to Parallel
Data conversion
- Controller
(HD84F/3064:Hitachi)
System Control
Read Channel
Data Processor
Servo Processor
Focus Tracking
Sled Driver
(BA5983FM : Rohm)
Spindle
motor
Sled
motor
Pick-up
(KRS-200C
:Sony)
disc
CPLD
(IC310)
Audio DAC(AK4393)
L/R-CH Jack &
Headphone
MP3, HDCD
(CS49300:Cirrus Logic)
SRC
(CS8420:
Cirrus Logic)
8kHz to 96KHz
120dB Dynamic
Range
CDP
-33-
3. I/O Block Diagram
AK4394
(DAC)
AK4394
(DAC)
AK4394
(DAC)
AK4394
(DAC)
P-LRCK
P-DATA
P-BCLK
P-LRCK
P-DATA
P-BCLK
MCK(P)
MCK(R)
74HC04
BUFFER
74HC04
BUFFER
ANALOG P OUTPUT
ANALOG R OUTPUT
ANALOG INPUT
COAXIAL P OUT
COAXIAL R OUT
COAXIAL IN
74HC04
BUFFER
74HC04
BUFFER
74HC04
BUFFER
74HC04
BUFFER
OPTICAL R OUT
OPTICAL IN
RELAY
F
R
O
N
T
AK5351
(ADC)
AK5351
(ADC)
74HC04
BUFFER
74HC04
BUFFER
BCK
DATA
LRCK
74HC04
BUFFER
74
HC04
BUFFER
OPTICAL
REC
VOL.
POWER
DOWN
MUTE
DEMPH
MUTE
DEMPH
CDP-DOUT
CDR-DOUT
EQ LEVEL
C
D
R
W
CIRCUIT DIAGRAMS
’00. 11.10
SI2448(UL)
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
NOTES : Symbol denotes AC ground.
Symbol denotes DC chassis ground.
1. POWER (SMPS) CIRCUIT DIAGRAM (UL)
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
-34-
CIRCUIT DIAGRAMS
1. POWER (SMPS) CIRCUIT DIAGRAM (EUROPE)
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
NOTES : Symbol denotes AC ground.
Symbol denotes DC chassis ground.
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
’00. 11. 10
SI2674(EUROPE)
-35-
-36-
2. CD-PLAY CIRCUIT DIAGRAM
-37-
3. CD-RECORD 1 CIRCUIT DIAGRAM
-38-
4. CD-RECORD 2 CIRCUIT DIAGRAM
-39-
5. CD-RECORD 3 CIRCUIT DIAGRAM
-40-
6. I/O CIRCUIT DIAGRAM
7. FRONT CIRCUIT DIAGRAM
-41-
-42-
PRINTED CIRCUIT BOARD DIAGRAMS
1. CD-PLAY TOP P.C.BOARD
2. CD-PLAY BOTTOM P.C.BOARD
-43-
3. CD-RECORD TOP P.C.BOARD 4. CD-RECORD BOTTOM P.C.BOARD
-44-
5. I/O TOP P.C.BOARD
LOCATION GUIDE
6 I/O BOTTOM P.C.BOARD
LOCATION GUIDE
-45-
7. FRONT P.C. BOARD
LOCATION GUIDE
-46-
8. POWER P.C.BOARD
9. H/P P.C.BOARD
-47-
EXPLODED VIEW
• MAIN SECTION
259
278
403
403
259
A00
A10
A49
278
403
259
278
403
259
278
260
A10-1
A43-3
A43
401
276
401
401
401
401
275
403
403
267
264
255
256
268
265
269
405
405
267
A00-1
403-1
403-1
403-2
403-1
403-1
281
A47
300
A43-4
-48-
• CD PLAY SECTION
006
430
009
010
436
014
013
025
020
026
434
431
027
028
029
033
033
435
435
030
034
431
431
035
032
431
012
A01
A02
A00
A03
011
001
002
031
031
-49-
131
127
128
454
132
151
153
152
438
129
439
441
130
150
131
133
154
A12
A10
006
430
009
010
436
014
013
020
431
012
A01
A02
011
001
002
031
031
• CD RECORD SECTION
NOTE : The ★ part with location numbers. 150, 151, 152, 153, 154 are not
serviceable parts. If you would like to replace these parts, order and
replace the Assembly part(Location No. A12) only.
Because these parts need a Mechanical precision adjustment when
reassembling after disassembling.
-2-
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 2
SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . 3
ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 5
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 6
OVERALL WIRING DIAGRAM . . . . . . . . . . . . . . 29
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . 31
CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . 34
PRINTED CIRCUIT BOARD DIAGRAMS . . . . . . . 41
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . 47
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . 50
SPECIFICATIONS
Signal Format
Playback Sampling Frequency 44.1 kHz
D/A Conversion 96kHz, Multi-Bit Delta-Sigma Conversion
Oversampling 128 Times
Playback Specifications
Frequency Response 2Hz – 20,050Hz
Playback S/N 100dB
Playback Dynamic Range 95dB
Playback THD 0.005% / –88dB
Analog Audio Output 2V RMS, ± 2dB (1KHz 0dB)
Digital-Coaxial Output 0.5 Vpp/75Ω
Headphone Output 0.5V RMS/32Ω Load (1KHz 0dB)
Record Specifications
Digital Dubbing Mode (X1/X2/X4) Equal to source
Digital Input Sample Rate 32kHz ~ 96kHz
Signal/Noise Ratio - Analog 84dB
Signal/Noise Ratio - External (Sourse) source-10dB
Dynamic Range 87dB
THD 0.005%/-85dB
Analog Input Sensitivity 300 mV RMS 47kΩ = 0dB
Digital Inputs (Direct Recording) 44.1kHz, ± 100 ppm/min.
General
Power Requirement 100~240V AC, 50/60Hz
Power Consumption 28 Watts
Dimensions
Width 17.3"/440mm
Height 4.4"/112mm
Depth 13.9"/354mm
Weight 14.3 lb/6.5 kg
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