Tele-File Adjustment - Sony SRW-1 Maintenance Manual

7-6. Tele-File Adjustment

n
Be sure to perform this adjustment after replacing the
CCM-52 board.
Tools
. Oscilloscope: TEKTRONIX TDS460A or
equivalent
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Use a probe with input capaci-
tance of approx. 10.8 pF
(TEK P6137 or equivalent).
. Alignment screwdriver: SONY alignment screwdriver
(DA-89)
(Part No.: J-6515-190-A)
. Recording tape:
BCT-SR series tape such as
BCT-40SR
Preparation
1. Power off SRW-1 and SRPC-1, and disconnect the DC
power cord from the DC IN terminal on the SRPC-1.
2. Remove the outside panel assembly.
3. Pull out the flexible card wire (FL-260 board).
m
. Be careful that the CCM-52 board does not contact
the frame chassis or other parts.
. Do not put any metal (excluding frame chassis)
close to the FL-260 board.
4. Check that no cassette tape remains in the unit.
7-14 (E)
FL-260 board
CCM-52 board
Tele-File Adjustment
1. Connect the oscilloscope probes to the specified points
on the CCM-52 board crossly as shown in the figure.
CH1: TP1/CCM-52 (side A, A-1)
CH2: TP2/CCM-52 (side A, A-1)
GND: Frame chassis
TRIG: TP1/CCM-52 (side A, A-1)
MODE: Math calculation mode minus
20 MHz BW LIMIT
TIME: 20 ms/DIV
Frame
Probe
E1
CCM-52 BOARD (A SIDE)
Ground line
CCM-52
board
TP1
TP2
SRW-1