Advertisement
Available languages
Available languages
S525
)
10
11
12
13
14
15
16
17
18
19
°S1
: Timer switch (shown in OFF position).
¢ $601
: Power ON/OFF switch (shown in ON position).
seas ncgpsssipicccessscesccs D e
a
a Se
eat
i
sy
e S602
: AC voltage selector (for [XA] mark areas).
{L ch)
oe
LINE OUT
¢ $701, $702
: Tape select switch (S701 =: Metal, S702 =: Normal,
1«
38
nei
sey
a AN decal
$701, $702 M: CrO,).
ve
Tey
¢ $703, S704
: Dolby NR switch (S703 =: B, S704 =: C,
|
$703, S704 H: OUT)
be
Sse gp esse
¢ $705
: Auto rec mute switch (shown in OFF position).
c e e d
c c a
of)
| HEADPHONES
¢ $706
: Rewind switch (shown in OFF position).
¢ $707
: Fast forward switch (shown in OFF position).
¢ $708
: Pause switch (shown in OFF position).
¢ $709
: Play switch (shown in OFF position).
Ges
wen td
eis
° S710
: Rec switch (shown in OFF position).
2SB621A-R
28B10300
DN6838-S
¢$711
: Stop switch (shown in OFF position).
¢ $901
: PLAY mode switch (shown in OFF position).
icso2
¢ $902
: FF/REW switch (shown in OFF position).
¢ $904
: Rec inhibit switch (shown in OFF position).
¢ Resistance are in ohms (Q), 1/4 watt unless specified otherwise.
:
a2)
i
x
i
1K = 1,000(2),
1M = 1,000k(Q)
Q15,16
ba
a
ba
EK cert
* Capacity are in micro-farads (uF) unless specified otherwise.
RETAIN
anya
selina
¢ All voltage values shown in circuitry are under no signal condition and
play
+= off == rec
"om
playback mode with volume control at minimum position otherwise
188133
specified.
|
(
) Saweeee
eee be Voltage values at record mode.
R96
10K
/
ot tae ee
E
i7,ie
Frgreg
}
$$.
F = 2SC3311Q
:
q
METAL /ON
080!
_saaaaaaaeeaaeaooaatinaoaconccoanononnannnanttet ,
10d:
Metal ............Voltage values at Metal tape mode.
|
COs.
eovactevciciens Voltage values at CrO, tape mode.
LM6417E1825
MECHANISM DRIVE
For measurement use EVM.
7
ie
o(
) indicates B (bias).
:
¢(«sts-« ) indicates the flow of the playback signal.
k. 2SDI450R
LINE
MUTE/ON
RI08
: oO
0
KR
: 2
a4
MECHANISM
CIRCUIT
SECTION
D801
ISS254
PE
9
e 020 (5
s!
TIMER
R92
10K
mater
aowoao
. =
S7OI-1
s702-1
(Tape Select)
e(s
) indicates the flow of the recording signal.
e Important safety notice
Components identified by A\ mark have special characteristics
important for safety.
When replacing any of these components, use
i
only manufacturer's specified parts.
+4
¢ The part no. of diodes mentioned in the schematic diagram stand for
|
production part No. Regarding the part No. with € mark the production
part No. are different from the replacement part No.
Therefore, when placing an order for replacement part, please use the
part No. in the replacement part list.
¢ The supply parts number is described alone in the replacement parts list.
off son
off
eon
oO
O
oO O
rg
é
14 4
MO AOOOOCODO
4amK
>I
lO ODA
OOOODS
aos'
R403
R904
Pe
ee Ep
IO OOOO
OOOO
s70l-2
$702 -2
(Tape Select)
off seon
off son
c903
D9SIO
ee
ee
OO
OOOO
DO
$703
S704
rs
Dolby -B
Dolby -~C
7
off +on
off eon
2 x
42
°
x
°
EE
3° xx
R7IL a2K
R713 8.2K
R7I7
100
fe
R718
Og 560
|
fs) o
©
fo)
°
89
le)
2,
12.6
[12.7
ic90t
jos)
ot
(12.0) oP
|e
O—2—@)-—)
()—)
PDS
PD2
PDI
PD@
OSC
PE@®
PEI
PEZ2
PES
TEST
Vss
¢ This schematic diagram may be modified at any time with the
;
o7n
avaee
tNle(seae
development of new technology.
METER DRIVE
LED
BLOCK
7]
97
9.4)
OOMDDOOOYOD
agi
{ale
Sale
oie
* Input level control...MAX
|
SPECIFICATIONS
~~ * Balance'control...... Center
c705
0.033
| R720
-RT21
® H4
D702
330
470
D701
OO
OOOOD
R723
270
p7os
FF
Playback S/N ratio
* Test tape...QZZCFM
Greater than: 45d6
$708
PAUSE
0706
1
$709
PLAY
ok.
Overall distortion
* Test tape
...QZZCRA for Normal
Less than 4%
...QZZCRX for CrO,
+
a
a o e
...QZZCRZ for Metal
REC INH D906
|
2
|
|
+
|
Overall S/N ratio
Greater than 43dB
mai
Meee
op pt aaa ly ant SE a
a!
ni
750i
D301
* Test tape...QZZCRA
(without NAB filter)
o707
STIO
REC
1
0708
1 OO OOO
ID)
Q701,702
D703 ~710
2SC3311Q
1SS254
METER MUTING
*Caution!
aa
ay,
a
IC and LSI are sensitive to static electricity.
28C33110
28D1423R — MA4056M
Secondary trouble can be prevented by taking care during repair.
aa
creas
*Cover the parts boxes made of plastics with aluminum foil.
*Ground the soldering iron.
*Put a conductive mat on the work table.
*Do not touch the legs of IC or LSI with the fingers directly.
Q207
A
2SC3311Q
TAPE
SELECTOR
pa Foe
Aes
Advertisement
