Onkyo TX-7530 - Remote Control Transmitter; Service Procedures; Replacing Fuses; FM;AM Band Step Change

REMOTE CONTROL TRANSMITTER RC-119S
Transmitter: Infrared
Signal range: Approx. 5meters(16ft.4”)
Power supply: TWO ”AA” batteries (1.5V X 2)
Dimensions(W x H xD): 6418 176mm
2-1/2” x3/4." X 7”
Weight: 140grams 5.00z.{including batteries)
Specifications and features are subject to change without notice.
SERVICE PROCEDURES
1. Replacing the fuses
For continued protection against fire hazard, replace only
with same type and same rating fuse.
Circuitno. Partno. Description
F902 252075 2.S5A-SE-EAK, Primary
F903 252075 2,5A-SE-EAK, AC outlet
F906 252070 1A-SE-EAK, Secondary
2. Change of FM/AM band step.
With the exception of the models below, a BAND STEP
selector switch is not provided.
(FM)
MODEL BAND STEP D717, 3753 | R119
UD 200kHz>50kHz | Additional | 15k2>24ko
UG/UQ | 50kHz—>200kHz | Eliminated | 24kN 15k2
(AM)
BAND STEP D716, J754
10kHz> 9kHz Additional
In D716/7 188133 (Part No. 223163) is used. In J753/4,
a jumper lead must be inserted. R119, with the muting
amplitude determined is on the back panel side of FM/AM
tuner and selector circuit printed circuit board assembly
test points TP-1 and TP-2.
3. Memory preservation
This unit does not require memory preservation batteries.
A built-in memory power back-up system preserves
contents of the memory during power failures and even
when the unit is unplugged. The unit must be plugged in
and the power switch turned on and off once in order to
charge the back-up system. Note that since this is not a
permanent memory the power switch must be turned on
and off a few times each month to keep the back-up
system operative. The period of time during which
memory contents are preserved after power has last been
turned off varies depending on climate and placement of
the unit. On the average, memory contents are protected
over a period of 3 to 4 weeks (a minimum of 2 weeks) after
the last time power has been turned off. This period is
shorter when the unit is exposed to very high humidity or
used in an area with an extremely humid climate.
LP Gy eex<10)
BACK PANNEL
Fa eee
A\'
FM/AM
906
TUNER AND SELECTOR
CIRCUIT PC BOARD
F903 AY
i
F902 mN
POWER SUPPLY CIRCUIT PC BOARD
DISPLAY PC BOARD