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POWER
SUPPLY
BOARD
@ Remove the
connector.
METER
BOARD
O +PTTWH3x6
© power supply
board
meter board
meter shield case
© Remove the claw.
TRANSISTOR
BOARD
tBVTIP3x8
transistor
board
ae ting
Q903
US
oS
insulating
a902
i \
come sheet
insulator
meter shield case
© rec mute board
@ escutcheon
| PCM-SO1ES
PCM-SOIES |
:
|
|
SECTION
3
ADJUSTMENTS
@
Switch Position
VCO
ADJUSTMENT
PB
MUTING............
ON
COPY. cons ens
soon hp ee OFF
Procedure:
TRACKING
............
OFF
REC RESOLUTION.......
16 bit
Se
VIDEO IN @i digital board
pecllloscone
HEADPHONES LEVEL ....
MAX
viDEo ouT fh
TP80----,
OVC control
............
center click
TP1
0 - — —
@
E-E mode: VIDEO-IN
and VIDEO-OUT
terminals
are connected.
vibEO IN
PCM-501ES
cal
VIDEO ouT [}
®
Reference input level
LINE
IN
VIDEO
IN
1 Vp-p
Input terminal
Source impedance
Signal input level
0.24 V (-10dB)
@
Reference output level
Output terminal
LINE
OUT
VIDEO
OUT
Load impedance
47kQ
752
0.24 V (-10 dB)
1 Vp-p
Signal output level
Make an adjustment after turning POWER
ON
more than half an hour so that the drift by tem-
perature rise is avoided.
Adjustment Location:
digital board
point
L501
(C570)
TP1 (1C506 (1) )
7P3 (1C506 (2)
6.
. *
Tw
Rdaasseen——.:
&
bs :
: 7
3:
23 = $
H
° Poe
*
ie
La
GNDO
Connect
VIDEO-IN
and
VIDEO-OUT
ter-
minals,
and
connect
the oscilloscope
to the
VCO check point and ground point.
Adjust L501 so that duty factor is 50%.
-5V
17 msec
duty factor 50%: a/b = 1/1
Turn the COPY switch to OFF>ON>OFF
and
then confirm the duty factor is 50%.
Connect the oscilloscope to TP3.
Confirm the duty factor is as shown below.
1.5V
C: less than 0.02usec.
If c is 0.02usec or more, solder the point @ :
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