Rec Y Current Adjustment (Vc-195 Board); Wireless Remote - Sony Handycam Vision CCD-TRV300E Service Manual
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Also See for Handycam Vision CCD-TRV300E:
- Operating instructions manual (136 pages) ,
- Service manual (21 pages)
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7. REC Y Current Adjustment (VC-195 board)
Adjust the Y FM signal recording current.
Mode
VTR recording (SP mode)
Signal
No signal
Pin !º of CN910 (REC RF)
Measurement Point
Measuring Instrument Oscilloscope
(20 MHz BW LIMIT: OFF)
Adjustment Page
F
Adjustment Address
53 to 5A
Specified Value
A = 185±5mV
Preparations:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, after memorizing the data, set the
bit value of bit1 to "1". (Refer to "3. Bit value discrimination"
of "3-1-8. Service mode").
3) Select page: D, address: 15, after memorizing the data , set the
bit value of bit7 to "0".
4) Set to recording mode. (Use the wireless remote commander
8mm VCR, or connect Pin 6 of CN935 of DD-105 board and
GND with 4.7kΩ resistor for a second.)
4.7kΩ resistor: 1-249-425-11
Adjusting method:
1) Insert a tape, set to recording mode. (Refer to "Preparations".)
2) Select page: 0, address: 01, and set data: 01.
3) Select page: F, address: 5C, after note down the data , set data:
FF, and press the PAUSE button of the adjusting remote
commander.
4) Select page: F, address: 65, after note down the data , set data:
00, and press the PAUSE button of the adjusting remote
commander.
5) Select page: 3, address: 01, set data: 41, and press the PAUSE
button of the adjusting remote commander.
6) Select page: F, address: 54, change the data and set the Y signal
level (A) to the specified value.
7) Press the PAUSE button of the adjusting remote commander.
8) Select page: F, address: 54, and read the data (D
9) Calculate the adjustment data (hexadecimal) from the following
equations (hexadecimal calculation), and input each adjustment
address. (Refer to Table 5-1-2. Hexadecimal-Decimal
conversion Table.)
Address: 53
D
Address: 55
D
Address: 56
D
Note: After setting each data, be sure to press the PAUSE button
of the adjusting remote commander.
).
54
= D
53
54
= D
55
54
= D
56
54
10) Write the following data in page: F, address: 57 to 5A.
Address
57
58
59
5A
Note: After setting each data, be sure to press the PAUSE button
of the adjusting remote commander.
11) Select page: F, address: 5C, set the data noted down at step 3),
press the PAUSE button of the adjusting remote commander.
12) Select page: F, address: 65, set the data noted down at step 4),
press the PAUSE button of the adjusting remote commander.
13) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
14) Select page: 0, address: 01, and set data: 00.
Processing after completed adjustment:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, and set the data memorized at step
2) of "Preparations".
3) Press the PAUSE button of the adjusting remote commander.
4) Select page: D, address: 15, and set the data memorized at step
3) of "Preparations".
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
5-46
Data
A1
95
A1
95
Fig. 5-3-12.
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