
2-6
WRR-855B
2-5. Service Functions
Set or release the muting function by operating the buttons on the front panel of the WRR-855B.
Function Name
Function
Setting Procedure
Release Procedure
Default Factory Setting
T OFF mode
Muting OFF by tone
While pressing the GP
While pressing the GP
T OFF mode is released.
squelch
and “-” key at the same
and “+” key at the same
time, turn on the power.
time, turn on the power.
2-6. Connector Input/Output Signal
D-Sub 15-pin Male
1
8
15
9
Pin No.
Signal
Contents
1
GND
GND for AF output signal
2
AF OUTPUT
AF output signal (unbalanced type)
3
NC
No connection
4
DC +7V
Power supply input (+7Vdc)
5
GND
GND for power supply
6
REM
Remote (Internal /Ext)
H: external
7
EXT SW
External power switch input H: power on
8
Digital GND
Digital I/O
9
I/F out (CLK)
Digital I/O
10
I/F in (CS)
Digital I/O
11
I/F in (DI)
Digital I/O
12
I/F out (DO)
Digital I/O
13
NC
No connection
14
NC
No connection
15
NC
No connection
2-7. Unleaded Solder
Boards requiring use of unleaded solder are printed with a
lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come
printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
m
.
Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
.
The unleaded solder melts at a temperature about 40
d
C
higher than the ordinary solder, therefore, it is recom-
mended to use the soldering iron having a temperature
regulator.
.
The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
Содержание WRR-855B
Страница 1: ...UHF SYNTHESIZED TUNER UNIT WRR 855B SERVICE MANUAL 1st Edition Revised 2 ...
Страница 4: ...2 WRR 855B 8 Schematic Diagrams TUN 8 8 1 CPU 342 8 8 DP 236 8 10 SW 814 8 10 ...
Страница 10: ...1 6 WRR 855B Sony Corporation Printed in Japan ...
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Страница 67: ...7 1 WRR 855B 7 1 Section 7 Board Layouts ...
Страница 68: ...7 2 WRR 855B 7 2 TUN 8 Suffix 11 TUN 8 Suffix 11 TUN 8 A SIDE SUFFIX 11 TUN 8 B SIDE SUFFIX 11 ...
Страница 69: ...7 3 WRR 855B 7 3 TUN 8 Suffix 22 TUN 8 Suffix 22 TUN 8 A SIDE SUFFIX 22 TUN 8 B SIDE SUFFIX 22 ...
Страница 70: ...7 4 WRR 855B 7 4 CPU 342 Suffix 11 CPU 342 Suffix 11 CPU 342 A SIDE SUFFIX 11 CPU 342 B SIDE SUFFIX 11 ...
Страница 71: ...7 5 WRR 855B 7 5 CPU 342 Suffix 21 CPU 342 Suffix 21 CPU 342 A SIDE SUFFIX 21 CPU 342 B SIDE SUFFIX 21 ...
Страница 83: ......
Страница 84: ...Printed in Japan Sony Corporation 2006 6 16 2001 WRR 855B U CE E 9 976 898 03 ...