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)

3-35 3-36
9. JACK CIRCUIT DIAGRAM(T572C)

LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3.18
1.3
1.4
1.8
1.5
0
1.5
1.4
1.6
3.1
0.7
0.15
0.15
0
0
1.7
1.4
0
1.5
1.6
0
1.6
0
3.1
1.7
1.4
3.1
1.5
0.15
0
0.7
1.5
1.8
2
3.1
2.9
2.2
2.9
0
0
0
1.6
3.1
1.6
1.5
0
1.4
0
1.5
1.7
1.2
3.1
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
1.6
1.4
1.5
0
1.6
1.4
1.5
1.4
3.1
1
1.5
0.005
0.5
0.003
1.58
0
3.1
1.2
1.2
1.2
1.2
3.1
1.65
1.8
1.5
1.5
3.1
3.1
0.001
3.1
3.7
0
3.1
3.1
1.8
0.004
3.1
0
0
0
1.8
3.1
0
0
0
0
2.1
2.1
LEVEL(V)
MODE
PIN NO.
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
0
0.8
0.9
1.3
3.1
0.78
0
1.26
0.08
1.2
2
0
3.1
3.1
3.1
3.1
0
1.8
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
0
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
1.8
1.5
3.1
0
LEVEL(V)
MODE
PIN NO.
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
3.1
3.1
3.1
3.1
3.1
3.1
3.1
0
3.1
3.1
3.1
1.5
3.1
0
3.1
3.1
3.1
3.1
3.18
0.086
3
2.4
2.3
0
0
3.1
0
0.017
1.8
3.1
3.1
0
3.18
1.3
3.1
3.1
3.1
0
2.3
3.1
0.001
3.1
3.1
3.1
1.6
3.1
3.18
0.018
1.8
3.19
2.69
1.5
2.9
2.59
0
LEVEL(V)
MODE
PIN NO.
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
2.29
2.08
2.29
2.29
2.49
3.1
2.39
2.45
1.5
0
1.52
0
1.61
1.6
3.1
1.6
1.6
1.5
0
1.6
1.4
1.5
LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
4.4
0
0
0
3.2
0
0
0
0
0
0
3.2
3.2
0
0
0
0
0
0
0
0
0
0
0
0
3.2
0
0
0
0
0
0
0
2.2
0
0
0
3.2
0
0
0
0
2.2
0
3.2
2.4
3.2
2.3
0
0
3.2
1.7
3.1
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0
0
0
3.2
0
0
0
0
0
0
0
0
0
0
3.2
0
3.2
3.2
0
0
3.2
0
1.5
0
4.4
0
0
0
3.2
0
0
3.2
0
4.4
3.2
2.6
3.2
3.2
3.2
3.2
0
3
0
3.2
3.2
4.7
0
PANTERA MEMORY
IC301IC501
LEVEL(V)
MODE
PIN NO.
DSP
IC201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3
3
3
3
3
3
3
3
0
3.08~3.1
2.97~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3.24
0.2~0.3
0.3
0.41~1
0.41~1
0.41~1
3.24
0.4~1
0.4~1
0.4~1
0.4~1
0.4~1
0.4~1
0
3~3.1
3~3.1
3~3.1
3~3.1
0
1.597
0
0
12.3mV
3.24
3.24
3.24
0.5~1.6
0.5~1.6
0.5~1.6
0.15~1
0
3.2
0
0.3~1
0.2~1
0
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
5.19
0
0
0
1.698
1.97
0
3.24
0
3.24
0
0
0
0
3.24
0
3.25
0
3.24
0
0
0.8
2mV~1.459
0.795
0.795
2.17
2.13
3.27
0
1.99
2.19
0
0
1.989
2.08
1.987
1.645
0.834
2.43
1.628
1.648
2.42
1.636
1.649
0
0
1.649
3.28
3.27
2.05
2.07
1.2~1.39
3.23
0
3.24
LEVEL(V)
MODE
PIN NO.
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
3.24
0
0
0
0
0
0
0
0
0
0
3.23
1.59~1.63
3.23
3.23
0
3.24
3.23
0
0
3.28
3.28
3.28
0
0
3.24
3.24
0
1.699
1.906
0
0
0
3.23
2.48~2.17
0
0
0
0
0
172mV
2.47~2.56
0
3.23
0
1.58~1.62
0
3.23
3.23
0
0
0
2.72
3.27
3.27
•CIRCUIT VOLTAGE CHART
3-37 3-38

3-39 3-40
LEVEL(V)
MODE
PIN NO.
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
2.08
2.15
2.16
1.636
0
2.04
0
0
3.15
3.25
3.26
3.25
0
3.24
3.24
2.27~1.97
0.22~0.18
1~1.3
0
0
0
0
3.26
1.3~1.27
3.25
1.58
1.53
1.52
0
0.52
1.5~1.6
0.63~0.68
2.7~2.8
2.7~2.8
185mV~1V
2.4~2.9
17mV~1V
17mV~1V
17mV~1V
17mV~1V
17mV~1V
2.8
1.618
3.23
3.23
LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3.1V
2.5~3.7
2
3.4
2.5
NC
NC
1.2V
2.78V
3.0~3.6
3.0~3.6
2.7V
1.9V
5.18V
5.18V
0~3.8V
0V~4V
3.3V
5.2V
0
0V
5.18V
2.2V~3.5
2.2V
3.4~3.8V
2.2~2.6
0V
5V
0.4V
4V
2.4V
2.4V
2.4~2.6V
2.4V~2.6V
2.4V~2.6V
2.4V~2.6V
2.4V
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
0V
0V
5V
0V
2.16
2.22
2.16
2.16
2.16
2.15
0
2.58
2.16
2.16
2.22
2.23
2.25
0
0
2.25
0
0
0
0
0
0
8
3.73
3.73
3.73
3.73
3.82
3.61
0
0
4.68
2.78
0
3.7
3.75
3.84
3.6
8.01
1.94
0~1.94
1.94
0
LEVEL(V)
MODE
PIN NO.
DEIVE&RF
IC2A1
IC2M1
44
45
46
47
48
8.01
2.16
0
7.96
2.1

3-41 3-42
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD
LOCATION GUIDE
(BOTTOM SIDE)
(TOP SIDE)

3-43 3-44
2. AV JACK P.C.BOARD
LOCATION GUIDE
4. FRONT P.C.BOARD
LOCATION GUIDE NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
3. SMPS P.C.BOARD

CONTENTS
SECTION 1 . . . . SUMMARY
SECTION 2 . . . . CABINET & MAIN CHASSIS
SECTION 3 . . . . ELECTRICAL
SECTION 4 . . . . MECHANISM
SECTION 5 . . . . REPLACEMENT PARTS LIST

SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ......... 1-2
SERVICING PRECAUTIONS .................................................................................. 1-3
• GENERAL SERVICING PRECAUTIONS
• INSULATION CHECKING PRODEDURE
• ELECTROSTATICALLY SENSITIVE DEVICES

1-2
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-
TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY
VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY
RESULTING PROPERTY DAMAGE OR USER INJURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE
THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY
CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE,
INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE
USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTEC-
TION FROM A.C. LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. A
CHECK SHOULD BE MADE OF THE FOLLOWING.
SUBJECT : FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY
AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS.
THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE
TRANSPORTED TO AND FROM THE REPAIR SHOP.
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES
SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN
RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE
BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THE
SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN
DEFEATED.
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD
SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS.
BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION
TO PARTS AND COMPONENTS, FOR FRAYED LEADS, DAMAGED
INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY.
FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE OR
A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND
PROTRUDING METAL SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF
RESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT
FACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTS
OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIR-
CUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.
LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI-
NET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HAN-
DLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE
WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE
ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLT-
METER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN
THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESIS-
TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR
BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON-
DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME.
MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500
OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG
AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED
METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75
VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY
VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK
HAZARD AND MUST BE CORRECTED IMMEDIATELY.
SUBJECT: GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN
AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAG-
NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN-
GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO
THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN
SERVICE LITERATURE.
SUBJECT : X-RADIATION
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER-
SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN-
TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC-
TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN
THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE
PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA-
TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC-
TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR-
CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR-
ABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE
USED. DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD IN
COLOR SETS, ALWAYS RE-INSTALL THEM.
3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA-
TION OF THE METER SHOULD BE CHECKED PERIODICALLY
AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE
AT YOUR DISTRIBUTOR.
4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY
THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY
TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD
BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE
WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES
NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING
CORRECTLY. WE SUGGEST THAT YOU AND YOUR SERVICE ORGA-
NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU-
LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE-
DURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ON
EACH CUSTOMER’S INVOICE.
5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN
A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE,
AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND
THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT
LONGER THAN IT IS NECESSARY TO LOCATE THE CAUSE OF EXCES-
SIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS
(WHERE USED).
SUBJECT: IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE-
GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE
TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID
SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT.
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
SUBJECT : TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY-
HOLE OR CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO
HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.
2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO
INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA-
TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR
VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC-
ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT
OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER-
CIAL MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED
MOUNTING INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR
PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT
THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW
ACROSS THE BOTTOM. BOLTS OR SCREWS USED FOR FASTENERS
MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE
TEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS
PROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS
MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ-
ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS
THRESHOLDS OR DEEP PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND
WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES,
INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION
RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.’S OF
THE SAME OR LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS.
EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN-
GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO
HOME AND FAMILY.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
A.C. VOLTMETER
GOOD EARTH GROUND
SUCH AS THE WATER
PIPE. CONDUIT. ETC
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

1-3
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this service
data and its supplements and ADDENDUMS, read and fol-
low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir-
cumstances create conflict between the following servicing
precautions and any of the safety precautions in this publi-
cations, always follow the safety precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the DVD AC power cord from the AC
power source before:
(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.
(2) Disconnection or reconnecting any internal electrical
plug or other electrical connection.
(3) Connecting a test substitute in parallel with an elec-
trolytic capacitor.
Caution : A wrong part substitution or incorrect
polarity installation of electrolytic capacitors may result
in an explosion hazard.
2. Do not spray chemicals on or near this DVD or any of
its assemblies.
3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact
cleaning solution to the contacts with a pipe cleaner,
cotton-tipped swab, or comparable soft applicator.
Unless specified otherwise in this service data, lubrication
of contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks with
whitch instruments covered by this service manual might
be equipped.
5. Do not apply AC power to this DVD and/or any of its
electrical assemblies unless all solid-state device heat
sinks are cerrectly installed.
6. Always connect test instrument ground lead to the
appropriate ground before connection the test instrument
positive lead. Always remove the test instrument ground
lead last.
Insulation Checking Procedure
Disconnect the attachment plug from the AC outlet and turn
the power on. Connect an insulation resistance meter(500V)
to the blades of the attachment plug. The insulation resis-
tance between each blade of the attachment plug and acces-
sible conductive parts (Note 1) should be more than 1M-
ohm.
Note 1 : Accessible Conductive Parts including Metal pan-
els, Input terminals, Earphone jacks, etc.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical ES devices are integrated circuits and some field
effect transistors and semiconductor chip components.
The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor compo-
nent or semiconductor-equipped assembly, drain off any
electrostatic charge on your body by touching a known
earth ground. Alternatively, obtain and wear a commer-
cially available discharging wrist strap device, which
should be removed for potential shock reasons prior to
applying power to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such
as aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a GROUNDED-tip soldering iron to solder or
unsolder ES devices.
4. Use only an anti-static solder removal device. Some
solder removal devices not classified a “anti-static” can
generate electrical charges sufficient to damage ES
devices.
5. Do not use freon-propelled chemicals. These can
generate electrical charge sufficient to damage ES
devices.
6. Do not remove a replacement ES device from its protec
tive package until immediately before you are ready to
install it. (Most replacement ES devices are packaged with
leads electrically shorted together by conductive foam,
aluminum foil, or comparable conductive material).
7. Immediately before removing the protective material from
the leads of a replacement ES device, touch the protective
material to the chassis or circuit assembly into which the
device will be installed.
Caution : Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Normally harmless motion such
as the brushing together of your clothes fabric or the lifting
of your foot from a carpeted floor can generate static elec-
tricity sufficient to damage an ES device.)

5
SPECIFICATIONS
• GENERAL
Power requirements AC120V, 60Hz
Power consumption 14W
Dimensions(approx.) 430 x 118 x 408mm (16.9 X 4.7 X 16.1 inches)(wxhxd)
Mass(approx.) 5.7kg(12.6 lbs)
Operating temperature 5˚C to 40˚C (41˚F to 104˚F)
Operating humidity 5 % to 90 %
• SYSTEM
Laser Semiconductor laser, wavelength 650nm
Signal system NTSC
Frequency response DVD (PCM 96kHz): 8Hz to 44kHz
DVD (PCM 48kHz): 8Hz to 22kHz
CD: 8Hz to 20kHz
Signal-to-noise ratio More than 100dB (ANALOG OUT connectors only)
Harmonic distortion Less than 0.008%
Dynamic range More than 100dB(DVD)
More than 95dB(CD)
• OUTPUTS
VIDEO OUTPUTS 1Vp-p, 75 ohms, sync negative, RCA jack x 1
S-V IDEO OUTPUTS (Y)1.0V(p-p), 75Ω, negative sync., Mini DIN 4-pin x 1
(C)0.3V(p-p), 75 ohms
COMPONENT VIDEO OUT (Y)1.0V(p-p), 75Ω, negative sync., RCA jack x 1
(PB)/(PR)0.7V(p-p), 75 Ω, RCA jack x 2
Audio output(digital audio) 0.5V(p-p), 75Ω, RCA jack X 1
Audio output(optical audio) 0.5V(p-p), 75Ω,Optical connector x 1
Audio output(analog audio) 2.0Vrms (1kHz, 0dB), 330Ω, RCA jack (L, R) x 2