Preparation For Adjustment And Tape Path Check - Sony DSR-45 Service Manual

DSR-45/45P
4-7.

PREPARATION FOR ADJUSTMENT AND TAPE PATH CHECK

Preparation before adjustment (connection and setting)
1. Mount the mechanism deck in the main unit.
(Connect all the connectors.)
2. Clean the tape running side.
(Refer to "5-1-2. Periodic check".)
3. Connect an oscilloscope to RP-234 board CN201 via the CPC-
13 jig (J-6082-388-A)(J-18).
Channel 1: RP-234 board, CN201 Pin 8 (Note)
External trigger: RP-234 board, CN007 Pin 6
Note: Connect a 75 Ω resistor between pins 8 of CN007 and 7
(GND).
75 Ω resistor (Parts code: 1-247-804-11)
4. Connect the adjustment remote commander (J-8) to the
CONTROL jack (LANC jack).
5. Turn the HOLD switch of the adjustment remote commander
to the ON position.
6. Select page: 3, address: 33, set data: 08 and press the PAUSE
button.
7. Select page: 3, address: 26, set data: 31 and press the PAUSE
button.
Procedure after operations
1. Connect the adjustment remote commander to the CONTROL
jack (LANC jack).
2. Turn the HOLD switch of the adjustment remote commander
to the ON position.
3. Select page: 3, address: 33, set data: 00 and press the PAUSE
button.
4. Select page: 3, address: 26, set data: 00 and press the PAUSE
button.
Oscilloscope
Adjustment
remote commander
(J-8)
Connect to pin 8
CH1
Connect to pin 6
EXT
TRIG
Tape path check (checking the RF waveform)
Play back the tracking tape (J-6) and check the states at the en-
trance and exit of the RF waveform. If it is not flat at either side,
perform the adjustments from Adjustment Start-4 in the flowchart
on page 5-23.
CN201
Connect to pin 7
RP-234 board
CPC-8 jig (J-18)
75 Ω resistor Connect to pin 8
RP-234 board
XH2-1
5-28
Normal entrance and exit sides
Faulty entrance side
Faulty exit side
Pin No. Signal name
8 RF MONITOR
7 GND
6 JSWP
DECK