3-27
3-28
CIRCUIT DIAGRAMS
1. POWER(SMPS) CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE NAD ELECTRONICS CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-
CUIT. SPECIAL COMPONENTS ARE SHADED ON THE
SCHEMATIC FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
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.
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.
VF(+) Power dead
R102 is defective
VF(-) Power dead
ZD102 is defective
Power dead
IC101 is defective
5V Power dead
Q107 is defective
3.3V, 1.8V, 8V, 12V Power dead
IC105 is defective
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
Summary of Contents for T514C
Page 21: ...3 12 2 SDRAM CLOCK 3 TRAY OPEN CLOSE SIGNAL FIG 2 1 FIG 3 1 ...
Page 24: ...3 15 FIG 7 2 DVD FIG 7 3 CD ...
Page 25: ...3 16 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD ...
Page 26: ...3 17 FIG 8 2 CD FIG 9 1 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...
Page 27: ...3 18 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD ...
Page 29: ...3 20 13 MT1389 AUDIO OUTPUT TO AUDIO DAC ASDATA3 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...
Page 30: ...3 21 14 AUDIO OUTPUT FROM AUDIO DAC FIG 14 1 ...
Page 37: ...3 29 3 30 2 AV JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Page 38: ...3 31 3 32 A B C D E F G H I J K L M N O P Q R S T 3 SYSTEM CIRCUIT DIAGRAM ...
Page 43: ...3 41 3 42 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...
Page 44: ...3 43 3 44 2 KEY P C BOARD 3 TIMER P C BOARD Solder Side Solder Side ...
Page 45: ...3 45 3 46 4 JACK 5 1CH I O P C BOARD OPTIONAL PART 5 SMPS P C BOARD Solder Side Solder Side ...
Page 52: ......
Page 53: ......
