Sony WRR-802A, Service Manual, Page: 30 / 64

3-14 WRR-802A (U)
8. BATT (Battery) indicator check
Procedure
(1) Set the WRR-802A as follows;
Channel setting:
U64 model; Group 00, 6501 channel (776.125 MHz)
U66 model; Group 00, 6701 channel (788.125 MHz)
U68 model; Group 00, 6901 channel (800.125 MHz)
VOL. control: Any position
Muting: ON (Normal mode)
(2) Connect the signal generator to the ANTENNA A IN
connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY(carrier frequency)
U64 model; 776.125 MHz
U66 model; 788.125 MHz
U68 model; 800.125 MHz
RF OUTPUT (Output level): 60 dB
u
V
EMF
(= _ 53 dBm)
MODULATION (Modulation frequency):
32.782 kHz
(32.782 kHz must be set
by connecting Function
generator)
DEVIATION (Frequency deviation):
±
2.1 kHz
(4) Turn on and off the MODULATION (modulation
frequency) of the signal generator as follows, and
check that BATT Indicator change also as follows:
MODULATION setting BATT indicator
of signal generator
ON BATT indicator (LCD):
Turn the signal
generator on and BATT
indicator starts blinking
after 30 seconds.
BATT indicator (LED):
Turn the signal
generator on and BATT
indicator starts blinking
after 30 seconds.
OFF BATT indicator (LCD):
Goes out.
BATT indicator (LED):
Goes out.
(5) Connect the signal generator to the ANTENNA B IN
connector, and perform the procedures (3) and (4)
above.
AF BATT
AF BATT
9. Tone squelch check
Procedure
(1) Set the WRR-802A as follows;
Channel setting:
U64 model; Group 00, 6501 channel (776.125 MHz)
U66 model; Group 00, 6701 channel (788.125 MHz)
U68 model; Group 00, 6901 channel (800.125 MHz)
VOL. control: Any position
Muting: ON (Normal mode)
(2) Connect the signal generator to the ANTENNA A IN
connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY(carrier frequency)
U64 model; 776.125 MHz
U66 model; 788.125 MHz
U68 model; 800.125 MHz
RF OUTPUT (Output level): 60 dB
u
V
EMF
(= _ 53 dBm)
MODULATION (Modulation frequency):
32.768 kHz
(32.768 kHz must be set
by connecting Function
generator)
DEVIATION (Frequency deviation):
±
1.4 kHz
(4) Turn on and off the MODULATION (modulation
frequency) of the signal generator as follows, and the
LCD indication changes also as follows.
MODULATION ON/OFF LCD indication
on signal generator
ON GP/CH indication (LCD):
U64 model; “00. 6501” appears.
U66 model; “00. 6701” appears.
U68 model; “00. 6901” appears.
OFF GP/CH indication (LCD):
“NO TONE” appears.
(5) Connect the signal generator to the ANTENNA B IN
connector, and perform the procedures (3) and (4)
above.