Sony CCD-TR648E / CCD-TR748E / CCD-TR848 Service Manual ▷ View online
5-37
CCD-TR648E/TR748E/TR848
3-5.
AUDIO SYSTEM ADJUSTMENTS
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to the
video system measuring instruments as shown in Fig. 5-3-11.
video system measuring instruments as shown in Fig. 5-3-11.
1. 1.5 MHz Deviation Adjustment (VC-272 board)
Adjust to the optimum 1.5MHz audio FM signal deviation.
If the adjustment is not correct, its playback level will differ from
that of other units.
If the adjustment is not correct, its playback level will differ from
that of other units.
Mode
Playback
Signal
Alignment tape:
For checking operation
(WR5-5NSP (NTSC)),
(WR5-5CSP (PAL))
(WR5-5NSP (NTSC)),
(WR5-5CSP (PAL))
Measurement Point
Audio terminal of A/V OUT jack
Measuring Instrument
Audio level meter
Adjustment Page
F
Adjustment Address
73
Specified Value
–7.5 ± 2.0dBs
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
F
73
Change the data and set the 400Hz
audio signal level to the specified
value.
audio signal level to the specified
value.
3
F
73
Press PAUSE button.
4
0
01
00
Set the data.
2. BPF f
0
Adjustment (VC-272 board)
Sets the BPF passing frequency of IC351 so that the AFM signal
can separate from the playback RF signal properly. If deviated. the
mono/stereo mode will be differentiated incorrectly, and noises and
distortions will increase during high volume playback.
can separate from the playback RF signal properly. If deviated. the
mono/stereo mode will be differentiated incorrectly, and noises and
distortions will increase during high volume playback.
Mode
Playback
Signal
Alignment tape:
For BPF adjustment
(WR5-11NS (NTSC)),
(WR5-11CS (PAL))
(WR5-11NS (NTSC)),
(WR5-11CS (PAL))
Measurement Point
Audio terminal of A/V OUT jack
Measuring Instrument
Distortion meter
Adjustment Page
F
Adjustment Address
74
Specified Value
The distortion rate should be minimum.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
F
74
Change the data and minimize the
distortion rate.
distortion rate.
3
F
74
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 5-3-11.
Main unit
A/V OUT
Audio
47k
Ω
Video (Yellow)
TV monitor
Audio level meter
or Distortion meter
47k
Ω
(1-249-437-11)
Playback
(Black)
5-38
CCD-TR648E/TR748E/TR848
5-4. SERVICE MODE
4-1.
ADJUSTMENT REMOTE COMMANDER
The adjustment remote commander is used for changing the
calculation coefficient in signal processing, EVR data, etc. The
adjustment remote commander performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communication
is written in the non-volatile memory.
calculation coefficient in signal processing, EVR data, etc. The
adjustment remote commander performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communication
is written in the non-volatile memory.
1. Using the Adjustment Remote Commander
1)
Connect the adjustment remote commander to CN713 of VC-
272 board via I/F unit for LANC control (J-6082-521-A) and
CPC jig connector (J-6082-539-A). To operate the adjustment
remote commander, connect the AC power adapter (8.4Vdc)
to the DC IN jack of I/F unit for LANC control, or connect the
L series Info-LITHIUM battery to the battery terminal of I/F
unit for LANC control.
272 board via I/F unit for LANC control (J-6082-521-A) and
CPC jig connector (J-6082-539-A). To operate the adjustment
remote commander, connect the AC power adapter (8.4Vdc)
to the DC IN jack of I/F unit for LANC control, or connect the
L series Info-LITHIUM battery to the battery terminal of I/F
unit for LANC control.
2)
Set the HOLD switch of the adjustment remote commander to
“HOLD” (SERVICE position). If it has been properly
connected, the LCD on the adjustment remote commander will
display as shown in Fig. 5-4-1.
“HOLD” (SERVICE position). If it has been properly
connected, the LCD on the adjustment remote commander will
display as shown in Fig. 5-4-1.
Fig. 5-4-1.
3)
Operate the adjustment remote commander as follows.
• Changing the page
• Changing the page
The page increases when the EDIT SEARCH+ button is
pressed, and decreases when the EDIT SEARCH– button is
pressed. There are altogether 16 pages, from 0 to F.
pressed, and decreases when the EDIT SEARCH– button is
pressed. There are altogether 16 pages, from 0 to F.
• Changing the address
The address increases when the FF (M) button is pressed,
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
• Changing the data (Data setting)
The data increases when the PLAY (N) button is pressed,
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
• Writing the adjustment data
The PAUSE button must be pressed to write the adjustment
data (D, E, F, 7 page) in the nonvolatile memory. (The new
adjusting data will not be recorded in the nonvolatile memory
if this step is not performed.)
data (D, E, F, 7 page) in the nonvolatile memory. (The new
adjusting data will not be recorded in the nonvolatile memory
if this step is not performed.)
4)
After completing all adjustments, turn off the main power
supply (8.4 V) once.
supply (8.4 V) once.
Page
Data
Address
Hexadecimal
notation
notation
LCD Display
Decimal notation
conversion value
conversion value
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A b c d E F
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2. Precautions Upon Using
the Adjustment Remote Commander
Mishandling of the adjustment remote commander may erase the
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjustments
and new adjustment data after each adjustment.
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjustments
and new adjustment data after each adjustment.
Ver 1.2 2003. 06
5-39
CCD-TR648E/TR748E/TR848
4-2.
DATA PROCESS
The calculation of the DDS display and the adjustment remote
commander display data (hexadecimal notation) are required for
obtaining the adjustment data of some adjustment items. In this case,
after converting the hexadecimal notation to decimal notation,
calculate and convert the result to hexadecimal notation, and use it
as the adjustment data. Indicates the hexadecimal-decimal
conversion table.
commander display data (hexadecimal notation) are required for
obtaining the adjustment data of some adjustment items. In this case,
after converting the hexadecimal notation to decimal notation,
calculate and convert the result to hexadecimal notation, and use it
as the adjustment data. Indicates the hexadecimal-decimal
conversion table.
Hexadecimal-decimal Conversion Table
Lower digit of
hexadecimal
Upper digit
of hexadecimal
of hexadecimal
0
1
2
3
4
5
6
7
8
9
A
(
A
)
B
(
b
)
C
(
c
)
D
(
d
)
E
(
E
)
F
(
F
)
0
1
2
3
4
5
6
7
8
9
A (
A
)
B (
b
)
C (
c
)
D (
d
)
E (
E
)
F (
F
)
0
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
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
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
174
159
175
160
161
162
163
164
165
166
167
168
169
170
171
172
173
177
176
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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
0
1
Note:
The characters shown in the parenthesis ( ) shown the display on the adjustment remote commander.
(Example)
If the DDS display or the adjustment remote commander shows BD (
bd
);
Because the upper digit of the adjustment number is B (
b
), and the lower digit is D (
d
), the meeting point
“189” of 1 and 2 in the above table is the corresponding decimal number.
0
2
Table. 5-4-1.
5-40
CCD-TR648E/TR748E/TR848
4-3.
SERVICE MODE
Note:
After the completion of the all adjustments, cancel the service mode
by either of the following ways.
by either of the following ways.
1)
Unplug the main power supply and remove the lithium battery.
(In this case, date and time and menu setting have been set by
users are canceled. Perform resetting.)
(In this case, date and time and menu setting have been set by
users are canceled. Perform resetting.)
2)
After data on page: D and F is restored, return data of the
address: 01 on page: 0 to 00. And when data on page: 2 is
changed, return the data to the original condition.
address: 01 on page: 0 to 00. And when data on page: 2 is
changed, return the data to the original condition.
1. Test Mode Setting
Set/release each test mode. Set page: 0, address: 01, data: 01 before
setting the data of page D and F.
setting the data of page D and F.
Page F
Address 20
Data
Function
00
Normal
01
Test mode
Various emergency prohibitions and releases Drum
emergency, capstan emergency, loading motor
emergency, reel emergency, tape top and end, DEW
detection
Various emergency prohibitions and releases Drum
emergency, capstan emergency, loading motor
emergency, reel emergency, tape top and end, DEW
detection
Page D
Address 10
Data
Function
00
Normal
01
Camera power ON
02
VTR power ON
03
Camera + VTR power ON
*
For page D and F, the data set will be recorded in the nonvolatile
memory by pressing the PAUSE button on the adjustment
remote commander. Take note that, in this case, the test mode
will not be released even if the main power has been turned
off.
memory by pressing the PAUSE button on the adjustment
remote commander. Take note that, in this case, the test mode
will not be released even if the main power has been turned
off.
*
Be sure to return the data of page: F, address: 20 to 00, and the
data of page : D, address: 10 to 00 after completing adjustments/
repairs and press the PAUSE button of the adjustment remote
commander. And set page: 0, address: 01, data: 00.
data of page : D, address: 10 to 00 after completing adjustments/
repairs and press the PAUSE button of the adjustment remote
commander. And set page: 0, address: 01, data: 00.
