Aeq Adjustment (Vc-206 Board); Pll Capture Range Adjustment (Vc-206 Board) - Sony DCR-TRV9 Service Manual

5. AEQ Adjustment (VC-206 Board)

Mode Camera recording /playback
(LP mode)
Subject Arbitrary
Signal Playback signal of recorded tape
CH1: Pin 8 of CN9903
Measurement Point
(RF MONITOR)
CH2: Pin 6 of CN9903 (JSWP)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 40, 41, 42, 43, 5A
resister between Pin 8 (RF MONITOR) and Pin
Note: Connect a 75
4 (GND) of CN9903.
75 resister (Parts code: 1-247-804-11)
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Write the following data in page: C, addresses: 40 to 43, 4B,
5A.
(To write the data, press the PAUSE button of the adjusting
remote commander each time data is set.)
Page: C, address: 40, data: C0
Page: C, address: 41, data: C0
Page: C, address: 42, data: 90
Page: C, address: 43, data: 90
Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00
3) Record for two minutes from tape top.
4) Rewind the tape, and play back from the tape top.
5) When the RF output stabilizes, select page: 3, address: 01, set
data: 07, and press the PAUSE button of the adjusting remote
commander.
6) About 20 to 30 seconds after pressing the PAUSE button, check
that the data of page: 3, address: 02 changes from "07" to "00".
7) Check that the data of page: 3, address: 03 is 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.
8) Read the data of page: 3, address: 04 to 07, and take the values
as D , D , D and D .
04 05 06 07
9) Select page: C, address: 40, set data: D
button of the Adjustment remote commander.
10) Select page: C, address: 42, set data: D
button.
11) Select page: C, address: 41, set data: D
button.
12) Select page: C, address: 43, set data: D
button.
13) Select page: C, address: 4B, set data: 00, and press the PAUSE
button.
14) Select page: C, address: 5A, set data: 8C, and press the PAUSE
button.
15) Select page: 0, address: 01, and set data: 00.
Trigger source: CH2
, and press the PAUSE
04
, and press the PAUSE
05
, and press the PAUSE
06
, and press the PAUSE
07

6. PLL Capture Range Adjustment (VC-206 Board)

Mode
Subject
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Adjusting method:
1) Record for two minutes on any tape.
2) Select page: 0, address: 01, and set data: 01.
3) Write the following data in page: C, address: 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 recorded portion.
5) Select page: C, address: 46, set data: 80, and press the PAUSE
button of the Adjustment 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), set the data of page: C, address: 46 to "80", and 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
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 when the pulse is set at the audio area head of CH1.
2
10) Obtain the average value of D
11) Select page: C, address: 46, set data: D
button of the Adjustment remote commander.
12) Select page: C, address: 4B, set data: 00, and press the PAUSE
button.
13) Select page: C, address: 5A, set data: 8C, and press the PAUSE
button.
14) Select page: 0, address: 01, and set data: 00.
Pulse is not set at the audio area head.
CH1
CH2
When the pulse is set at the audio area head.
CH1
CH2
5-45
Camera recording /playback
(LP mode)
Arbitrary
Playback signal of recorded tape
CH1: CL9912 (Pin of IC1701)
203
(C1ERP)
CH2: Pin 6 of CN9903 (JSWP)
Oscilloscope
Trigger source: CH2
C
46
when the pulse
1
and D , and take it as D
1 2
, and press the PAUSE
3
ODD ch
3.33msec
Fig. 5-3-8
.
3