NAD T572C User manual
SERVICE MANUAL
SERVICE MANUAL
T572C/T572AH
DVD VIDEO PLAYER
MODELS : T572C/T572AHSERVICE MANUAL
© NAD 2002
NAD ELECTRONICS INTERNATIONAL
TORONTO
T572C/T572AH
DVD VIDEO PLAYER
T572C/T572AH
DVD VIDEO PLAYER
3-17 3-18
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
R1A1
56(2W)
'02. 03. 19 R14140A
CIRCUIT DIAGRAM
1. POWER(SMPS) CIRCUIT DIAGRAM
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.
Oscillation abnormal
Digitron no Power
3.3V line dead.
No Power
8V line dead
5V_A/5V_D, No Power
No Power
3-19 3-20
5 6
Spindle Servo Loop
RF SIGNAL
Focus Servo Loop
Tracking Servo Loop
Sled Servo Loop
WAVEFORM
D201
D202
R284
R283
'02. 03. 19 R14135A
2. DVD DSP CIRCUIT DIAGRAM
DVD/CD picture
audio abnormal µ-com
Interface adress CD/DVD picture
audio abnormal
Focus Servo
fail
Tracking
Servo fail
Scratched
Disc abnormal
Sled Servo fail
DRAM Control
Disc Detect
Error
Spindle Servo fail
3-21 3-22
3. DRIVE & RF CIRCUIT DIAGRAM
4
18
19 20
21 1
6
2
3
21
18
20 19
WAVEFORM
Spindle Servo Loop
Turn Table Loop
Focus Servo Loop
Tracking Servo Loop
Sled Servo Loop
R2R3
R2R1 0
R2R4
'02. 03. 19 R14133A
Turntable
not operate
DVD laser
not operate CD laser
not operate
Tray Loading
Speed control
Turn table
speed control
Actuator spindle
sled not operate
CD laser
not operate
Tracking Servo fail
Servo fail
Focus
Servo fail
3-23 3-24
10
7913 811 12
WAVEFORM
OPTICAL/COAXITAL OUT
Y/Pb/Pr(Component)
Y.c(S-VHS)
Audio L/R OUT
CVBS
HB
150
'02. 08. 26 R14134A
NAD
4. PANTERA CIRCUIT DIAGRAM
No Power on
No Power 1.8V
Audiuo DAC Interface
System not operate
System not working or
Digitron not display.
Not memoried setup
menu
3-25 3-26
• WAVEFORMS
IC2A1 Pin 42, Focus Error IC2A1 Pin 41
Tracking Error
IC501 Pin 114
Component Y
IC2A1 Pin 41
VBR TRACKING Error
IC2A1 Pin 57,
RF
IC201 Pin 88, SLED Drive(FMO)
IC2A1 Pin42, Focus Error(in Focus Search)
IC201 Pin 83, Focus Drive(FDO)
IC501 Pin 118, Composite IC501 Pin 112, Chrominance
(Super video out Mode)
Tek Stop : 2.50MS/s 4 Acqs
M20.0µs2 Apr 1999
14:47:27
Glitch Ch1
Ch3 500mV
[T ]
T
3
IC501 Pin 114, Luminance
(Super video out Mode)
Tek Stop : 1 00kS/s 3290 Acqs
M 500µsCH1 280/mV
Edge Slope
Type
<Edge>
Source
Ch1
Coupling
DC
Level
280mV
Mode
&
Holdoff
3
Ch3 1.00V
[ T ][ T ]
Slope
T
IC501 Pin 99,
PANTER MAIN
IC501 Pin 112
Component Pb
IC501 Pin 110
Component Pr
TURN(+)(-) from Motor Drive
Reverse turn, IC301 6, 8
Sensor 1 (disc position)
Sensor 2 (disc ready),
IC301 78,89
TURN(+)(-) Signal from µ-com
TE/TZC After tracking
servo ON (Play mode),
IC2A1 36, IC2A4 7
TURN(+)(-) from Motor Drive
Forward turn
TE/TZC Before tracking
servo ON
TZC/MIRR (Search mode)
IC2A4 7, IC2A1 27
TE/SLD(+) Search mode
(outter &inner),
IC2A1 36, IC2M1 28
3-27 3-28
5. MEMORY CIRCUIT DIAGRAM
17 17
16
16
WAVEFORM
'02. 03. 19 R14136A
4.7K
Program download fail
Digitron abnormal
Not power on
Not memoried
setup Menu
“No Disc” display
Tray not open/close
Tray not closed
Digitron all not display and
system not operate
Turntable
not operating
Pick-up not initial
operating
Disc number
detect error
3-29 3-30
6. TIMER & KEY CIRCUIT DIAGRAM
System not
operate
System not
operate
Remocon
not operate
3-31 3-32
7. A/V CIRCUIT DIAGRAM
'02. 03. 19 R14137B
3-33 3-34
8. JACK CIRCUIT DIAGRAM(T572AH)
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