Panasonic SA-PT170EE / SC-PT175EE Simplified Service Manual ▷ View online
68
Step 26 Remove 5 screws at the rear panel.
Step 27 Release the catches and remove the fan unit.
Step 28 Release the tab of the rear panel in the direction of
arrow.
Step 27 Release the catches and remove the fan unit.
Step 28 Release the tab of the rear panel in the direction of
arrow.
Step 29 Detach Analog Amp P.C.B. from rear panel. Flip and
position it according to diagram shown.
Step 30 Connect 3P cable of fan unit to the connector
(CN5704) on Analog Amp P.C.B.
position it according to diagram shown.
Step 30 Connect 3P cable of fan unit to the connector
(CN5704) on Analog Amp P.C.B.
Step 31 Process to check and service Analog Amp P.C.B.
Note: Insulated material (box) is required to support Ana-
log Amp P.C.B.
Note: Insulated material (box) is required to support Ana-
log Amp P.C.B.
10.3. Checking & Servicing SMPS &
AC Inlet P.C.B.
• Follow (Step 1) to (Step 21) of Item 10.2.
Step 1 Remove 6 screws on SMPS P.C.B.
Step 2 Release P.C.B Support of SMPS P.C.B.
Step 3 Twist the wire clamper to release 4P cable (from H5801
to CN5051).
Step 2 Release P.C.B Support of SMPS P.C.B.
Step 3 Twist the wire clamper to release 4P cable (from H5801
to CN5051).
69
Step 4 Remove 2 screws on AC Inlet P.C.B.
Step 5 Remove P.C.B bracket on AC Inlet P.C.B.
Step 6 Remove 1 screw at the rear panel.
Step 7 Release the tab of the rear panel in the direction of
arrow.
Caution: Keep the P.C.B. bracket in safe place. Avoid dent-
ing it. Place it back during assembling.
Step 5 Remove P.C.B bracket on AC Inlet P.C.B.
Step 6 Remove 1 screw at the rear panel.
Step 7 Release the tab of the rear panel in the direction of
arrow.
Caution: Keep the P.C.B. bracket in safe place. Avoid dent-
ing it. Place it back during assembling.
Step 8 Release P.C.B. spacer.
Step 9 Detach SMPS P.C.B. from bottom chassis and position
it according to the diagram shown.
Step 10 Process to check and service SMPS P.C.B. and AC
Inlet P.C.B.
it according to the diagram shown.
Step 10 Process to check and service SMPS P.C.B. and AC
Inlet P.C.B.
10.4. Checking & Servicing DVD
Module P.C.B.
• Checking & Servicing Side A of DVD Module P.C.B.
• Follow (Step 1) to (Step 21) of Item 10.2.
• Follow (Step 1) to (Step 21) of Item 10.2.
Step 1 Process to check and service side A of DVD Module
P.C.B.
P.C.B.
• Checking & Servicing side B of DVD Module P.C.B.
70
Step 2 Remove 2 screws on DVD Module P.C.B.
Step 3 Twist the wire clamper to remove 3P cable at the con-
nector (CN5704).
Step 3 Twist the wire clamper to remove 3P cable at the con-
nector (CN5704).
Step 4 Remove 7 screws at the rear panel.
Step 5 Release the catches and remove the fan unit.
Step 6 Release the tabs of the rear panel.
Step 7 Remove the rear panel.
Step 5 Release the catches and remove the fan unit.
Step 6 Release the tabs of the rear panel.
Step 7 Remove the rear panel.
Step 8 Detach the DVD Module P.C.B. from bottom chassis.
Flip and position it according to diagram shown.
Step 9 Connect 3P cable to the connector (CN5704) on D-Amp
P.C.B.
Step 10 Process to check and service side B of DVD Module
P.C.B.
Caution: Insulated material is required to support DVD
Module P.C.B.
Flip and position it according to diagram shown.
Step 9 Connect 3P cable to the connector (CN5704) on D-Amp
P.C.B.
Step 10 Process to check and service side B of DVD Module
P.C.B.
Caution: Insulated material is required to support DVD
Module P.C.B.
71
11 Voltage & Waveform Chart
Note:
• Indication Voltage Values are in standard values for the unit measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard.
Therefore, there may exist some errors in voltage values, depending on the internal impedance of the DC circuit tester.
Therefore, there may exist some errors in voltage values, depending on the internal impedance of the DC circuit tester.
• Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point because it
may differ from actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
11.1. DVD Module P.C.B. (1/4)
REF NO.
M
ODE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CD PLAY
0
0
0
0
1.2
1.4
0.1
2.8
3.3
0.1
0.1
0.1
3.3
0.1
0.1
0.1
3.4
0.1
0.1
0.1
REF NO.
M
ODE
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CD PLAY
3.4
0.1
0.1
0.1
3.4
1.3
0.1
3.4
0
0
0
0
1.7
3.4
0.9
0.1
0.1
0.9
0.1
3.4
REF NO.
M
ODE
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
CD PLAY
1.7
1.3
1.7
0.1
1.7
0.1
1.3
0.1
0.1
0.1
0.1
3.3
0.1
0.1
1.3
0.1
0.1
0.1
0.1
0.1
REF NO.
M
ODE
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CD PLAY
0.1
0.1
0.1
0
0
0.1
0.1
0.1
0.1
3.4
0.1
0.1
0.1
0.1
1.3
0.1
0.1
0.1
0.1
0.1
REF NO.
M
ODE
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CD PLAY
0.1
0.1
0.1
3.4
1.3
0.1
1.7
0.1
0.2
0.7
0.1
0.7
0.6
0.3
0.8
0.1
0.1
0.1
0.1
3.4
REF NO.
MODE
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CD PLAY
0.1
1.3
0.1
0.1
0.1
3.4
3.4
3.4
1.3
0.1
1.8
0.1
3.3
3.3
3.3
1.3
1.7
0.1
0.1
3.4
REF NO.
MODE
121
122
123
124
125
126
127
128
CD PLAY
3.4
0.1
1.3
3.4
0.1
1.4
0
0
REF NO.
M
ODE
1
2
3
4
5
CD PLAY
8.5
0.1
1.4
5.1
8.9
REF NO.
M
ODE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CD PLAY
0.1
0.1
0.1
3.4
0.1
3.4
0.1
0.1
1.7
0.1
0.2
0.7
0.7
0.6
0.1
3.4
0.4
0.8
0.1
1.3
REF NO.
M
ODE
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CD PLAY
1.5
1.3
2.0
1.7
2.5
2.6
2.6
1.8
0.9
1.1
3.4
0.1
3.4
2.4
1.3
1.3
1.8
2.6
2.6
1.4
REF NO.
M
ODE
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
CD PLAY
1.9
2.7
0.1
1.3
0.1
3.3
3.3
3.4
3.4
1.7
0.1
3.4
1.9
2.8
3.0
3.4
3.4
3.4
0.6
3.4
REF NO.
M
ODE
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CD PLAY
1.6
0.1
0.1
0.9
3.4
2.0
1.7
0.1
3.4
3.1
0.1
3.4
3.4
0.1
0.3
0.1
3.4
3.4
3.4
3.4
SA-PT170EE DVD MODULE P.C.B.
IC8001
IC8001
IC8001
IC3901
IC3901
IC3901
IC3901
IC3901
IC3901
IC3952
IC8001
IC3901
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