Technics SA-5460 Service Manual

H ALIGNMENT INSTRUCTIONS STEREO SEPARATION ALIGNMENT
Note: 1. Stereo modulator............0...000.. Connect stereo modulator output to EXT. MOD. terminal of signal generator.
lInternaliOSG2.2.822. 22222 1kHz_ Pilot signal modulation
MAIN AMP (Ica) ALIGNMENT
2. Signal generator ........0000c00.ceeee Frequency approximately 98MHz. Output level 72 dB (IHF). Modulation mode to FM.
Notes:
1. The “Icq" adjustment should be started about 5 minutes after setting the power switch to the ON position.
2. Speakers switch to OFF position.
3. Band selector switch................ FM AUTO 4. Mode switch.............ccc000eceeee STEREO
SIGNAL GENERATOR | STEREO MODULATOR INDICATOR ADJUSTMENT
REMARKS
NNE
1 Connect DC VTVM between TP602 and TP603 (Left channel), TP604 and TP6OS (Right channel) EOUNEC WON MODE and MOR Oats (VTVM or SCOPE} POINTS
2 Adjust VR601 (Left channel) and VR602 (Right channel) to 12mV on DC VTVM indication.
Connect VTVM or scope to
12
|
FM
antenna
terminal
L
(and
R)
30%
Modula-
speaker
terminals
through
Adjust
for
minimum
right
through dummy antenna. tion. low pass filter. Refer to fig. 5. (and left) output.
Notes:
1. Muting switch . Mode switch
2. Band selector switch AM/FM AUTO (FM, RF, FM-IF) . Maintain line voltage at rated voltage.
3. 300QFM dummy antenna Refer to fig. 3. . Output of signal generator should be no higher than necessary e Alignment Points (FM/AM RF & IF Circuit)
4. Speaker switch to obtain an output reading.
. 112.59
SIGNAL GENERATOR DIAL INDICATOR ye To SG ia ore:
or SWEEP GENERATOR SETTING (VTVM or SCOPE) ADJUSTMENT REMARKS we, (SG imp. 750)! $759
1502 |
DISTANCE] | (DISTORTION METER) POINTS EM IF @RI02 FM ANT
CONNECTION FREQUENCY | | [2 ecti
AM ALIGNMENT
High side through 455kHz Connect vertical ampli- T1 (1st IFT) (P)
0.0014F to AM antenna (Set for Point of non- | fier of scope to TP1. T2 (2nd IFT) (S) Adjust for maximum
trimmer terminal. England inter-ference through 0.1/F. T3 (IF Trap) output.
Common to chassis. to 470KHz) FM OSC
AM
ANT
3002
FM
Dummy
Antenna
Fig.
3
FM ANT
Trimmer
alee eae ve
Fashion loop of several 600kHz 600kHz Connect VTVM or scope Adjust for maximum
turns of wire and radiate (30% Mod. [1" to speaker terminal L6 (OSC Coil) output, Adjust L8 by AM OSC
signal into loop of tuner. with 400Hz) (31.5mm)] | of receiver. L8 (ANT Coil) moving coil bobbin. :
along territe core. [| o
Fashion loop of several 1500kHz 1500k Hz Connect VTVM or scope Adjust for maximum 8 ie
turns of wire and radiate (30% Mod. [734" to speaker terminal CTs (OSC Trimmer) | output. AM 2nd VR102
signal into loop of tuner. with 400Hz) | (180.1mm)] | of receiver. CT4 (ANT Trimmer) | Repeat steps (3) and IFT ~
(4). ®~®, ©~®©: Stereo OFF
AM IF Position
FM-IF ALIGNMENT T _
—r ed ®~©: Stereo ON Position
:
Adjust
for
center
(Indicator
Lighting)
Point
of
non-
:
T101
(DISCRI
IFT)(A)
be
:
FM
SIGNAL
g
No
Signal
inter-ference,
|
Tuning
meter
of
set.
Orange
Core
ae
of
tuning
METER
©:
Adjust
Point
of
Pilot
AM IF Output Circuit.
FM-RF
ALIGNMENT
Fig.
4
Connect
to
FM
antenna
9O0MHz
9O0MHz
Connect
VTVM
or
scope
Ls
(OSC
Coil)
:
f
e
Alignment
Points
(AF
Amplifier
Circuit)
terminal
through
FM (100%
Mod.
|
[3<""
to
speaker
terminal
L3
(DET
Coil)
Adjust
for
maximum
g
dummy antenna. with 400Hz) | (19.2mm)] of receiver. L2 (ANT Coil) CUIPUT:
DC VTVM H
Connect
to
FM
antenna
106MHz
106MHz
Connect
VTVM
or
scope
CT3
(OSC
Trimmer)
|
Adjust
for
maximum
To
Receiver
|
To
Output
terminal
through
FM
(100%
Mod.
|
[6%"’
to
speaker
terminal
CT2
(DET
Trimmer)
|
output.
wK
!
Meter
dummy antenna. with 400Hz) (176.2mm)] | of receiver. CT1 (ANT Trimmer) | Repeat steps (6) and fs
(7). LEED LOW PASS FILTER
(fo =15kH2~19kHz)
FM MONO DISTORTION ALIGNMENT = ies seen
Connect to FM antenna 100MHz Connect distortion meter T101 (DISCRI IFT)(B) | Adiust for minimum : I Fig. 5
terminal through FM (100% Mod. | 100MHz to speaker terminal Greon Core distortion meter RELAY
dummy antenna. with 400Hz) of receiver. indication. :
© 3
FM SIGNAL METER ALIGNMENT 2
2
@
Apply
100MHz
FM
signal
of
100
dB,
400Hz
30%
modulation
to
@
Adjust
VR104
for
about
4.7
point
of
signal
meter
indication.
L
channel
R
channel
SEPARATION
FM antenna terminal through FM dummy antenna.
® Tuning 100MHz for maximum output by speaker terminal.
SOFT
MUTING
LEVEL
ALIGNMENT
Refer
to
SERVICE
AID
on
page
4.
AM
ANT
AF AMPLIFIER P.C.B. Coil —= FM signal input
(@)
Muting
switch
to
“‘off’’.
()
Muting
switch
to
“on”.
;
@) Apply a 60 dB (1mV) mono RF FM signal to the antenna ® Reduce FM signal to 19 dB (QV). I FM input vs. AF output curve
terminals.
®
Adjust
VR101
to
—3
dB
on
output
meter.
Refer
to
fig.
6.
Fi
(3)
Adjust
Volume
Control
of
receiver
to
indicate
0
dB
on
meter
F
A
:
9.
6
across
speaker
terminals.
®
Dial
Scale
and
Start
Point
of
Dial
Pointer
FM MPX PILOT ALIGNMENT 90 MHz
Start Point Pointer !
Using a frequency counter | Using alternate system
©O) 98MHz Non-modulated mono signal applied to set. (4) Apply stereo signal from generator or stereo station to receiver.
@) Muting switch to ‘‘on’’. @ Adjust VR102 until stereo indicator lights up. Cement arm of
(3) Connect frequency counter to TP101 through resistor (100k). VR102 as shown in fig. 4.
(4) Adjust VR102 to 19kHz +30Hz.
1
600'kHz 1500 kHz
sa-5460 [5] [6] sa-s460

Technics SA-5460 Specifications

General

Brand	Technics
Model	SA-5460
Category	Stereo Receiver
Language	English