Technics ST-7300 Service Manual

-m
BLOCK
DIAGRAMS
OF
INTEGRATED
CIRCUITS
IC 101 (AN217)
FM 2 STEPS IF AMPLIFIER «nd
& AM CONVERTER CIRCUIT
r-----
IF INPUT (1) raeee
|
a
(15)
1C102 (AN377)
FM IF AMPLIFIER & DETECTOR
|
CIRCUIT
—apenw ew ew a ese eww oe ase ew el & bee ae aw ew ome «cee a= eo J
POWER SUPPLY
n
mm Ep ee «= emp aa (8) (9) (10) nme ams @eS Gee amp ~“
at riecunl-¢
{ QUADRATURE |+4
DETECTOR
aH esh
IF AMP IF AMP
OC A ii SUPPLY
CA BAGGE
| x | vco
ADJUSTMENT
r--
—---@)---
--+~)
------
@--—--—----—-—---
4
i
76kHz
38kHz
ik
|
COMPOSITE
SIGNAL INPUT (>) AF AMP
1C307 (AN363) ©
C=== (o) on an a a= aos
] (2)
x
m
oO
oO
P]
VOLTAGE 38kHz 1SkHz
CONTROLOSC IDIVIDER a ouoeay (12) 19kHz OUTPUT
epee ey rere
DETEC TO | Vee
PLL FV) MULTIPLEX CIRCUIT
|
-----©©--©-
“0
)-
—-
---©--------
~—~+~)--—-
(L) (R) : STEREO GROUND POWER
OUTPUT INDICATOR SUPPLY
@ TO REMOVE CABINET
(1)
Remove
four
(4)
cabinet-mounting
screws
(side)
Nos.
1~4, as shown in fig. 8.
(2) Remove metal fitting of cabinet from holes A and B of
front panel in arrow direction ®, as shown in fig. 8.
(3) Remove cabinet from chassis in arrow direction @), as
, shown in fig. 8. |
(4) To reassemble, reverse above procedure.
Rey
Screw 1
Screw 2
Fig. 8
m= REPLACEMENT PARTS LIST
Remarks
Dare Alama 8 fincarintihrnn

Technics ST-7300 Specifications

General

Brand	Technics
Model	ST-7300
Category	Tuner
Language	English