Electrical Adjustments; Tape Speed Adjustment; System Control Clock Adjustment; Test Tape - Sony CFD-K10 Service Manual

sEcTtoN 6
ELECTRICAL ADJ USTMENTS
Perform the adjustments in the order that they are
described below. (It is expected that after the playback
system has been adjusted, the recording system is then
adjusted.)
Unless otherwise specified, perform the adjustment and
measurement for each channel.
. Positions of the switches and controls
F U N C T I O N
. . . . . . . . . T A P E
r s s . . . . .
. . . . . . . . . . . . . . 2
D I R M O D E
. . . . . . . . . . . p
VOLUME.
...standard output level
posruon
o Specified position of recording
Adjust the VOLUME control so that the following output
signal level is obtained.
o Standard output level
Output terminal
DOLBY
o t T
Signal source impedance
without
load
output signal level
0.180v
( - 12.zdB)
r First, perform the high speed adjustment.
(High speed adjustment)
2. Place the CD DUB SPEED (5402) in the ,,HIGH,, position.
Adjustment value : high speed
side is within 1% (60H2).
(Normal speed adjustment)
4. Place the CD DUB SpEED
position.
Adjustment value: normal speed
(5407) in the "NORMAL"
5. Adjust so that the difference in frequency from the REV
side is within 7% (l}Hzl.
Adjuetment Location: control board (See page 34.)
Systêm Control Glock Adjustment
Procedure :
fr€quency
counter
Connect a frequency counter across the C605 and verify that
the readout is at 6.4kHz+40H2. lf it is outside the range,
adjust RV603.
Adjustment Location I control board (See page 34.)
Adjustment
point
Speed cheker
reading
Frsquency countêr
rsadlng
RV6O2
-1.77 to -0.83%
5,930 to 5,950H2
3. Adjust so that the difference in frequency from the REV
. Test tape
Type
Signal
Used for
ws-48A
3 k H z , O d B
tape speed adjustment
P.4-A100
l0kHz, -10d8
record/playback head
azimuth and phase ad-
justment
P.4-L300
315H2, OdB
playback
level adjust-
ment
cs-122
record bias adjustment,
record level adjustment
Adjustment
part
Speed cheker
reading
Frequency counter
readlng
RV6O1
-7 to +1oÀ
2,970 to 3,030H2