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:
Fig. 4
mRemoval
of the Rear Cabinet (Fig. 4)
1.Remove
the. belt clip (B)x 1.
2.Remove
the screws
(C) (2x 10)mm
x 2.
m Removal of the Cassette Holder & Graphic
Fig. 6
Equalizer
PC board.
(Fig. 6).
1.Remove
the
Screws
(K) (1.4 3.5)mm X4.
2.Remove
the Graphic
Equalizer
PC
board
in the
direction
of arrow
4.
Guideway
end
Dial
Pointer
Fig. 8
front
end
(B)
RQ-V175
(F) DIAL CHASSIS
POINTS
Fig. 5
(J)
m Removal
of Dial Chassis
and Circuit Board
(Fig. 5)
1.Remove
the
screw
(D) (1.7
X 5)X1.
2.Disconnect
the two solder (E).(F).
3. Remove
the dial chassis
in the direction of arrow
Pe
ake
4.Remove
the
solder
(G). (H). (1). (J) form
flexible
PC
board.
Fig. 7
mw Removal of the Front Cabinet and Mechanism
(Fig. 7).
1.Remove
the screws (L)(1.7 * 4.5)mm X 2.
2. Remove
the
front
cabinet
& mechanism
in the
direction
of arrow
'5.
[To
Removal
of Tuning Gear
Note:
The
pointer have
to be inserted
first before
1
installing
Tuning
Knab.
_Firstable turn the tuning shaft of the variable capacitor
counter
clockwise,
to the
end.
2.Insert the end of the pointer into the chassis'
pointer
guidewag.
3. Then
put the center
part of pointer
under
Rib
"A"
- 4. Turn the pointer's front end to contact Rib "B" in which
it is the start point (Fig.8).
RQ-V175
@ ALIGNMENT INSTRUCTIONS
READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
. Set XBS"selector switch to OFF.
. Set power source to:3 V DC.
Output of signal generator should be no higher than
necessary to obtain an output reading.
1. Set volume control to maximum.
2. Set function select switch to RADIO.
3. Set band select switch to FM STEREO.
4. Set FM sense select switch to DX.
@ ANM-IF ALIGNMENT
SIGNAL GENERATOR or
SWEEP GENERATOR
CONNECTIONS
FREQUENCY
EQUIPMENT
ELECTRONIC AC
VOLTMETER or
OSCILLOSCOPE
Headphones Jack
ALIGNMENT
POINT
(Shown in Fig. 1.)
RADIO DIAL
SETTING
REMARKS
Fashion a loop of
eet oa E ! : a
Point of non-
(352)
several turns of wire
30% Mod
y
interference.
Fabricate the plug as
Adiust for maximum output
and radiate a signal
(on/about
Ssnownn hig >) apdmen
sas
at 400 Hz
connect the lead wires of
into the loop ant. of
600 kHz)
the plug to the measuring
instrument.
receiver.
@ AN-RF ALIGNMENT
511 kHz---(E] only
516kHz---(El] only
aM Ook.
Adjust for maximum output.
Coil)
CT3 (AM OSC
Trimmer)
(*1) Adjust for maximum
output. Adjust L3 by
moving coil along the
ferrite core.
Adjust for maximum output.
Tuning capacitor
fully closed.
Tuning capacitor
fully open.
Tune to signal
1650kHz.---(E] only
1635kHz---(E 1] only
(*1) L3 (AM ANT
Coil)
(*1) Fix antenna coil with wax after completing alignment.
Connect vert. amp.
|
scope to test point
Adjust for maximum
VW . Negative side
DIAC TISUT)
amplitude.
to test point Y .
(Shown in Fig. 2.)
Adjust for maximum
T3(FM2nd IFT) | aan ae
:
(Shown in Fig. 3.)
550 kHz
@ FM-IF ALIGNMENT
Connect to test point
VY through
ceramic capacitor
(0.001 uF).
Negative side to test
Point of
interference
(on/about
90 MHz)
10.7 MHz
(SWEEP)
point FY.
@ FM-RF ALIGNMENT
Headphones Jack
Connect to test point
V through FM
Tuni
(35)
c
:
.
dummy antenna
86.2MHz---[E] only
uning capacitor | /rapricate the plug as
L1 (FM OSC
(*2) Adjust for maximum
87.4MHz--- (El) only
fully closed.
shown in Fig. 5. and then
coil)
output.
Negative side to test
connect the lead wires of
the plug to the measuring
instrument.
109.2MHz---{E] only
Tuning capacitor
CT1 (FM OSC
108.3MHz---[E!] only | fully open.
Trimmer)
90 MHz
Tune to signal
= eM oe
Coil)
106 MHz
ore
ul
Trimmer)
(*2) Three output responses will be present; proper tuning is the center frequency.
|
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