Technics SH-E7 - Disassembly Instructions; Component Removal Procedures; Block Diagram Overview; System Signal Flow and Circuit Blocks

HM DISASSEMBLY INSTRUCTIONS
“ATTENTION SERVICER”
SOME CHASSIS COMPONENTS MAY HAVE SHARP EDGES.
BE CAREFUL WHEN DISASSEMBLING AND SERVICING.
sa No. | How to remove the cabinet ee How to remove the front panel
Procedure : Procedure
1 1. Remove the 4 screws from both sides of the 1»2
cabinet and the screw from its back.
1. Disconnect the leads from the 7 connectors
(J101, J102, J103, J104, J105, J106, J108).
2. Remove the 5 screws (@ ~ @) trom the
front panel.
Bottom
@Push
Pull &
1. Remove the 2 screws (@,.Q@ )
from the switch P.C.B.
2. Remove the 12 screws (@ ~ @)
from the EQ level control P.C.B.
3. Undo the 3 tabs and remove the EQ
level control P.C.B.
1. Remove the 7 screws (@ ~@ )
from the main P.C.B.
2. Remove the screw (@) from
the jack plate.
EQ level
control P.C.B.
Mi BLOCK DIAGRAM
(L ch) Q4
REMOTE
CONTROL
[IN
REMOTE 1C202
CONTROL 16202 |
L_out
OPERATION
AMP.
(12.3V) (-12.4V)
1,9 5
O O
-
(C201 8 O
le # .
BUFFER AMP. Q
(12.3V) (-12.4V)
GRAPHIC EQUALIZER
SOURCE IN
BAND LEVEL CONTROL
try! |
ae evel
18
(7.6)
|
)
oo
‘
|
2,3
¢B)—? a pee | 14 DI6,15,29
TY | | (
(-77v) 4 ! 1 20 RESET
C6)
sd
i
I
Y
CIRCUIT
(5.7v) 9 id =
: 10 14 19
q
CONTROL
1 | circuit] | | I
Cosa SS |
16
Nass
SOURCE
|
out
©
|
Q204 | °
a2o1 fe
MUTING
I SWITCHING ki CONTROL | ?
l
SPECTRUM ANALYZER 7ch MULTIPLEXER
B.P.F (16KHz) (76V)
r-- 4 D500~506 GB) 9
AF
AMP.
|
\
- 8 | °
(Z6V) (-7.7V) -<— 2a i
@B) CB) 1 b
6°
63Hz
——%
6
|
|
2
ra
;
i
a>
bp
—
Sos
\60Hz
——*
oo
a
|
|
fe SF e | 9
pc 400Hz ——®. 6+ | | ‘ene
CON-
=
a
|
——
ee pe oa | 24 E
DS S1> |
SPECTRUM ANALYZER B.P.F. eae 1 [> o
(63Hz,
160Hz,
400Hz,
1KHz,
2.
5KHz,
6.3KHz)
eons
can
at
{7
eee 7
7 6.3kHz —— KO-+4 | I 48
ee eg = ¢8)
|
|
|6
kHz
4
2
- _- ae
| 4 1 {2
O
i
|
*
—-*
|
FL
DRIVE
1 | BINARY 8-1] |
| DECODE |
Das
a
ees
oe
J
|
ee
|
Note: (—@——) : Source signal
(t= >) : Spectrum analyzer signal