Sony DCR-PC7, Service Manual

Page: 84 / 107

6-49
5. AEQ Adjustment (MR-36 Board) 6. PLL Capture Range Adjustment (MR-36 Board)
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Pin
2
of CN6202 on VC-183 board
(RF MONITOR)
Oscilloscope
C
40, 41, 42, 43, 5A
Camera recording/playback (LP mode)
Arbitrary
Adjusting method:
1) Set data: 01 to page: 1, address: 00.
2) Set data: 80 to page: C, address: 4B, and press the PAUSE button
of the adjusting remote commander.
3) Write data in page: C, addresses: 40 to 43, and 5A as shown in
the following table.
To write the data, press the PAUSE button of the adjusting
remote commander each time data is set.
Camera recording/playback (LP mode)
Arbitrary
Playback signal of recorded tape
CH1: Pin
!™
of CN6202 on VC-183
board (C1ERP)
CH2: Pin
5
of CN6202 on VC-183
board (JSWP)
Mode
Subject
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
C
46
Oscilloscope
Trigger source: CH2
Adjusting method:
1) Record camera images for two minutes on any tape.
2) Set data: 01 to page: 1, address: 00.
3) Write the following data in page: C, addresses: 4B and 5A.
To write the data, press the PAUSE button of the adjusting
remote commander each time data is set.
Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00
4) Playback the part recorded with the camera images.
5) Set data: 80 to page: C, address: 46, and press the PAUSE button
of the adjusting remote commander.
6) Set the data of page: C, address: 46 to “60” , and check that the
pulse is not set at the audio area head of the C1ERP waveform´s
ODDch of the oscilloscope (CH1).
7) Set the data of page: C, address: 46 to “A0” , and check that the
pulse is not set at the audio area head of the C1ERP waveform´s
ODDch of the oscilloscope (CH1).
After confirming steps 6) and 7), proceed to step 12).
8) If the pulse is set in steps 6) and 7), increase the data of page: C,
address: 46 from “80” , and read the data D
1
when the pulse is set
at the audio area head of CH1.
9) Decrease the data of page: C, address: 46 from “80” , and read
the data D
2
when the pulse is set at the audio area head of CH1.
10) Obtain the average value of D
1
and D
2
, and take it as D
3
.
11) Set D
3
to page: C, address: 46, and press the PAUSE button of
the adjusting remote commander.
12) Set data: 00 to page: C, address: 4B, and press the PAUSE button
of the adjusting remote commander.
13) Set data: 8C to page: C, address: 5A, and press the PAUSE button
of the adjusting remote commander.
14) Set data: 00 to page: 1, address: 00.
Fig. 6-3-9.
When the pluse is not set at the audio area head.
CH1
CH2
When the pluse is set at the audio area head.
CH1
CH2 ODD ch
3.33 msec
Address
40
41
42
43
5A
Data
C0
C0
90
90
00
4) Record for one minute from the tape top.
5) Rewind the tape, and play back from the tape top.
6) When the RF output stabilizes, set data: 07 to page: 3, address:
01, and press the PAUSE button of the adjusting remote
commander.
7) About 20 to 30 seconds after pressing the PAUSE button, check
that the data of address: 02 changes from “07” to “00” .
8) Check that the data of page: 3, address: 03 is the following value.
When “00” : Normal
When “01” : EVENch is faulty
When “02” : ODDch is faulty
When “03” : EVENch and ODDch are faulty
Perform the following procedure only when “00” is displayed.
9) Read the data of page: 3, address: 04 to 07, and take the values as
D
04
, D
05
, D
06
, and D
07
.
10) Set D
04
to page: C, address: 40, and press the PAUSE button of
the adjusting remote commander.
11) Set D
05
to page: C, address: 42, and press the PAUSE button of
the adjusting remote commander.
12) Set D
06
to page: C, address: 41, and press the PAUSE button of
the adjusting remote commander.
13) Set D
07
to page: C, address: 43, and press the PAUSE button of
the adjusting remote commander.
14) Set data: 8C to page: C, address: 5A, and press the PAUSE button
of the adjusting remote commander.
15) Set data: 00 to page: C, address: 4B, and press the PAUSE button
of the adjusting remote commander.
16) Set data: 00 to page: 1, address: 00.