Sony CDP-3100 - Page 52

3-3. AU-183 BOARD ADJUSTMENT
Carry out the following adjustment/check when the AU-183
board has been replaced.
Note:
e Adjusting VRs (RV104/RV204) e Adjust from the adjusting hole at B-side of AU-183 board.
The RV104/RV204 adjustment need not be carried out
when the AU-183 (mounted) board has been replaced.
Therefore, never move them.
For details of the RV104/RV204 adjustment, refer to
Maintenance Manual Part 2.
Equipment
and
Tool
;
Adjustment
Location
Oscilloscope
Audio
analyzer
(level
meter,
distortion
analyzer)
Test
disc
(YEDS-18)
Adjusting
screwdriver
a ON =
Controls and Switches Setting
Rear panel
DIP switch (S101/AU-183 board)
SW1:
ON
(Constant
on-line
output
playback
mode)
SW2 to 4: OFF
SW5,6: OFF
SW7,8: ON
Slide
switch
(S111/CN-812
board):
HIGH
-~ 2a OAN OW —-~ O
TSRPNMLKJHGFEODCEBEA
AU-183 board
(B-siche)
-
ion
Turn on the power switch of CDP-3100 and load thetest disc
(YEDS-18).
3-3-1. Output Level Adjustment
Connection
Rear panel Audio analyzer
(Level meter)
Adjustment (AU-183 Braard)
e
Connect
the
audio
analyzer
to
the
LINE
Output
level
of
LINE
OUT
CH-1
@RV101
(P,
6)
OUT
CH-1
connector.
+19.0
dBm+0.1
dB
if
the
specified
value
cannd
be
e
Play
back
the
second
track
(1
kHz,
0
dB
(0
dBm
=
0.775
Vrms)
satisfied
with
@RV101
(P,
$).
signal)
on
the
test
disc
(YEDS-18).
adjust
@RV102
(R,
7)
finely.
Output level of LINE OUT CH-2
+19.0 dBmt0.1 dB
(0 dBm = 0.775 Vrms)
@RV201 (P, 9)
if the specified value cannit be
satisfied with @RV201 (P,)).
adjust @RV202 (N, 10) findy.
e Connect the audio analyzer to the LINE
OUT CH-2 connector.
e Play back the second track (1 kHz, 0 dB
signal) on the test disc (YEDS-18).
CDP-3100
33
(E)