Download Sony DPS-V77 Output

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ABCD
Professional Audio Products
Technical Bulletin 1999-012
Digital
Worldwide Technical Bulletins for Broadcast and Professional Products
Date: April 5, 1999
Subject: OUTPUT LEVEL DROP WHEN
CONNECTING 600W DEVICES
Model: DPS-V77
Serial No: ALL
DESCRIPTION
If the output level drops when the XLR (balance) output
is connected to other devices at 600W termination,
replace the main board ICs and resistors shown below.
(See Figures 1 and 2.)
MAIN BOARD
SCHEMATIC DIAGRAM
470 ➔ 100
Former
IC403
IC503
NJM4580E
8-759-711-83
R427, R428
R527, R528
R425, R426
R525, R526
OUT
New
fi
NJM5532M
8-759-700-94
Carbon, 100W
1-259-983-11
fi
Carbon, 22W
1-259-975-11
Carbon, 470W
1-259-991-11
fi
Carbon, 100W
1-259-983-11
NJM4580E
➔
IC or Resistor
100 ➔ 22
NJM5532M
Figure 1
MAIN BOARD
S102
R426
R426
470W ➔ 100W
R425
+
IC403
R425
470W ➔ 100W
R427
R428
IC503
R427, R428
100W ➔ 22W
IC502
R527
R528
R526
R525, R526
470W ➔ 100W
R527, R528
100W ➔ 22W
R525
Figure 2
NCA(AU)98-013
Page 1 of 1
Broadcast Professional Products Asia • Sony Australia • Sony Broadcast Professional Europe • Sony Canada Ltd. • Sony Electronics Inc.USA • Sony Products Professional Latin America
1019990008W01.FM
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