Sony Digital8 DCR-TRV410 Service Manual page 151

11. Hi8/standard 8mm RP Filter f
(VC-213 board)
Adjust the LPF of the playback RF amplifier (IC201).
Mode VTR stop
Signal No signal
Pin 7 of CN910 (RF AGC OUT)
Measurement Point
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 6E
Specified Value A= Minimum
Connection:
1) Input a 14.2MHz, 400mVp-p CW signal to Pin 4 of CN910
(RF AGC IN).
14.2 MHz 400 mVp-p
Signal
generator
0.01 µ F
47 Ω
Transistor : General NPN transistor (2SC403, etc)
47 Ω resistor :
1-249-401-11
1 k Ω resistor :
1-249-417-11
15 k Ω resistor :
1-249-431-11
0.01 µ F capacitor : 1-101-004-00
Fig. 5-3-16.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 6, address: 61, set data: 04.
3) Select page: 6, address: 6F, set data: 01.
4) Select page: F, address: 6E, change the data and minimize the
14.2MHz signal level (A).
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 6, address: 61, set data: 00.
7) Select page: 6, address: 6F, set data: 00.
8) Select page: 0, address: 01, and set data: 00.
14.2MHz
Fig. 5-3-17.
Adjustment
0
RFU DC OUT jack on
PJ-97 board
(4.6 V)
1 k Ω
Pin 4 of CN910
(RF AGC IN)
Pin 6 of CN910
(REG GND)
15 k Ω 0.01 µ F
A
5-56