Sony DVP-FX870 / DVP-FX875 Service Manual ▷ View online
DVP-FX870/FX875
4-7
4-8E
LCD
4-3. LCD BOARD
: Uses unleaded solder.
• See page 4-1 for circuit boards location.
There are a few cases that the part isn't mounted in this model is printed on this diagram.
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
LCD BOARD (SIDE A)
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
LCD BOARD (SIDE B)
RETURN
MENU
DISPLAY
VOL
N
X
x
.
>
( / ENTER)
OPTIONS
+
-
DVP-FX870/FX875
5-1
5-2
SECTION 5
WAVEFORMS AND CIRCUIT VOLTAGE
5-1. WAVEFORMS
1. Spindle control waveform (No disc condition)
DMSO/ECR (U10 PIN21)
TEO (U7 PIN32)
TRSO (U9 PIN26)
U (U10 PIN7)
V (U10 PIN4)
W (U10 PIN2)
Fig 5-1
Fig 5-2
Fig 5-3
Fig 5-4
TEO (U7 PIN32)
AUDIO OUT (J6 PIN2)
TRSO (U9 PIN26)
2. Tracking control related signal (system checking-cd)
4. Audio output from speaker IC (L/R)
3. Tracking control related signal (system checking-dvd)
DVP-FX870/FX875
5-3
5-4
5. Audio related signal
DIN (U19 PIN2)
CVBS (U14 PIN6)
SCKIN (U19 PIN16)
LRCIN (U19 PIN3)
Fig 5-5
Fig 5-6
Fig 5-7
Fig 5-8
Y (FB23)
C (FB22)
DVDRFIP (U7 PIN6)
6. Video output waveform (CVBS)
8. RF waveform
7. Video output waveform (Y/C)
DVP-FX870/FX875
5-5
5-6
5-2. CIRCUIT VOLTAGE CHART
PIN
STOP
PLAY
PIN
STOP
PLAY
PIN
STOP
PLAY
PIN
STOP
PLAY
PIN
STOP
PLAY
PIN
STOP
PLAY
1
0
0
51
0
0
101
3.286
3.289
151
0.043
0.036
201
3.286
3.287
251
0
0
2
0.238
0
52
3.282
0
102
3.286
3.283
152
1.134
1.145
202
0.035
0.038
252
1.673
1.678
3
0.21
0.035
53
0
0
103
3.301
3.288
153
1.596
1.608
203
0.035
0.038
253
1.644
1.673
4
0.145
0.043
54
0.052
3.243
104
3.021
3.023
154
1.597
1.616
204
2.656
5.327
254
0.973
1.63
5
0.159
0.034
55
1.806
1.902
105
2.889
3.007
155
1.033
1.053
205
3.283
3.284
255
0.898
0.897
6
1.748
1.698
56
2.042
2.024
106
3.282
3.285
156
3.286
3.285
206
3.285
3.284
256
3.285
3.285
7
1.747
1.686
57
1.851
1.868
107
0.014
0.053
157
1.992
1.993
207
0.037
0.037
8
2.198
2.032
58
2.653
1.563
108
3.283
3.284
158
0
0
208
3.286
3.285
9
2.024
2.035
59
2.543
2.182
109
2.782
2.973
159
0
0
209
1.533
1.532
10
2.035
2.045
60
1.578
2.31
110
2.775
2.736
160
1.914
1.925
210
1.582
1.687
11
2.163
2.077
61
0.835
1.963
111
3.283
2.898
161
0
0
211
1.546
1.605
12
0.887
1.02
62
0.035
1.542
112
3.257
0.048
162
2.613
2.923
212
1.929
0.069
13
0.835
1.24
63
0.036
0.837
113
1.645
1.361
163
3.264
3.265
213
1.912
1.907
14
0.74
1.036
64
0.046
0.047
114
0.134
0.635
164
3.278
0
214
0.037
0.04
15
0.684
1.032
65
3.286
3.285
115
1.223
0.856
165
3.278
3.281
215
2.945
2.955
16
0.647
1.076
66
3.282
3.285
116
0.803
1.13
166
3.278
0
216
1.653
1.652
17
0.617
1.038
67
0.069
0.307
117
1.048
1.264
167
3.283
3.281
217
3.284
3.285
18
2.014
2.036
68
0.316
0.571
118
3.286
3.285
168
3.283
3.281
218
1.278
1.284
19
2.007
2.012
69
0.108
0.877
119
0.886
1.354
169
3.282
3.283
219
0
0
20
0.006
0.176
70
3.282
2.854
120
0.98
1.085
170
3.286
3.285
220
0
0
21
0.04
0.477
71
0
3.055
121
0.97
1.205
171
3.283
3.273
221
0
0
22
3.246
2.409
72
3.282
2.836
122
0.128
1.174
172
3.273
3.273
222
3.008
3.012
23
3.256
3.237
73
0.025
0
123
1.606
1.465
173
1.943
3.283
223
1.623
1.624
24
3.287
3.256
74
0.024
1.658
124
1.095
1.176
174
1.914
1.925
224
1.624
1.624
25
2.819
2.737
75
0.026
0.026
125
1.25
0.957
175
3.283
3.283
225
1.592
1.593
26
2.074
1.763
76
0.025
0.022
126
1.066
1.156
176
3.283
3.283
226
2.123
1.594
27
0
0
77
0.009
2.001
127
0.804
0.805
177
0
3.283
227
1.834
1.623
28
2.749
2.745
78
0.009
0.026
128
0.892
1.002
178
0
0
228
1.749
1.617
29
2.003
2.002
79
3.285
1.455
129
0.967
1.265
179
0.054
0.055
229
3.284
3.285
30
1.395
1.374
80
3.267
1.645
130
2.555
3.054
180
3.286
3.287
230
3.285
3.285
31
1.435
1.157
81
0
0
131
3.286
3.285
181
3.284
3.286
231
0
0
32
1.559
1.304
82
3.267
1.153
132
2.965
2.964
182
0.558
1.012
232
1.906
1.923
33
1.546
1.317
83
3.267
1.051
133
3.262
3.261
183
0.557
0.963
233
0.696
0.701
34
0.345
1.046
84
3.288
1.5342
134
3.117
3.125
184
0
0
234
0.745
0.653
35
0.344
0.961
85
3.287
1.815
135
3.246
3.241
185
0.564
0.946
235
0.56
0.864
36
1.4
0.974
86
3.287
1.995
136
3.047
3.076
186
3.283
3.284
236
1.123
0.978
37
1.4
1.388
87
2.941
2.943
137
0.968
0.883
187
0.97
0.957
237
0
0
38
1.4
1.382
88
0
1.212
138
0.983
0.996
188
0
0
238
0.039
0.038
39
1.4
1.387
89
3.287
0.966
139
0.065
0.056
189
1.35
0.677
239
3.203
3.202
40
1.398
1.387
90
0
0
140
0.168
0.176
190
3.286
3.286
240
3.076
1.685
41
1.398
1.383
91
0
0.078
141
0.977
1.045
191
0.98
0.573
241
0.007
1.586
42
1.395
1.386
92
1.556
1.925
142
1.914
1.925
192
0
0
242
1.618
0
43
0
0
93
1.879
1.902
143
0.997
2.448
193
1.989
1.99
243
1.051
1.573
44
1.807
0
94
1.877
2.817
144
1.015
1.524
194
1.308
1.306
244
3.286
3.286
45
3.285
1.854
95
3.193
3.243
145
3.286
3.285
195
1.398
1.385
245
0
0
46
0
0
96
3.286
3.285
146
1.584
1.603
196
3.286
3.287
246
3.285
3.285
47
0.876
0.798
97
0
2.266
147
3.282
3.28
197
0.045
0.049
247
0.258
2.106
48
0.456
0.769
98
3.286
5.048
148
0
0
198
0.045
0.049
248
1.368
1.365
49
3.286
3.264
99
0
5.049
149
0.035
0.046
199
3.285
3.283
249
3.243
1.543
50
4.096
1.796
100
0
2.705
150
0.043
0.068
200
3.286
3.287
250
1.387
1.876
U7 (MT1389 MPEG)
U7 (MT1389 MPEG)
U7 (MT1389 MPEG)
U7 (MT1389 MPEG)
U7 (MT1389 MPEG)
U7 (MT1389 MPEG)
PIN
STOP
PLAY
1
3.307
3.307
2
3.304
3.304
3
3.304
3.304
4
3.299
3.299
5
0
0
6
1.62
1.62
7
1.649
1.649
8
3.306
3.306
9
3.32
3.32
10
3.307
3.307
11
3.282
3.282
12
3.303
3.303
13
2.366
2.366
14
1.664
1.664
15
3.306
3.26
16
3.009
2.729
17
3.043
3.02
18
0.006
0.038
19
2.269
2.618
20
3.303
3.26
21
3.306
3.262
22
0
0
23
3.306
3.263
24
3.267
2.993
25
0.804
3.262
26
2.885
2.744
27
3.277
3.261
28
1.384
1.388
U6 (MCU Z8F0822)
PIN
STOP
PLAY
1
0
0
2
2.859
2.85
3
2.512
2.515
4
2.486
2.483
5
0
0
6
2.512
2.533
7
0.982
0
8
0
0
9
2.53
2.515
10
5.08
5.066
11
2.528
2.512
12
0
0
13
0.885
0.892
14
2.53
2.528
15
5.079
5.077
16
2.53
2.528
U16 (APA2068KA)
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