Sony DSR-2000A Service Manual page 117

5. FE CHECK
1. Insert a blank tape.
(Press the keys in this order : [HOLD], [RESET] and [SET]
keys, to set the time counter to 00, which facilitates the
operation.)
2. Connect an oscilloscope as follows :
Check : TP404 & TP504/RP-111 board
GND : E401 & E501
TRIG : TP403
3. Select the FE CHECK.
4. Select REC using the [AUDIO|IN] (↑) key. Press the
[PLAY] and [REC] keys.
After recording for 30 to 60 seconds (time counter reading),
press the [STOP] key.
5. Playback the recorded segment and note down the waveform
level.
6. Select FE ONLY using the [AUDIO|IN] (↑) key. Press the
[VIDEO] key to select VIDEO INS. Locate the tape segment
that is recorded in step "4", and press the [PLAY] and [EDIT]
keys to record (i.e., erase) the recorded segment for about 30
seconds.
7. Playback the segment recorded (erased) in step 6. and confirm
that the waveform level is 30% or less.
A
DSR-2000A/2000AP
B
B < A x 0.3
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