Sony TC-WR690 - Recording Protection and Technology; Protecting Recordings; Dolby HX PRO System Explained

5-4.
SCHEMATIC DIAGRAM—AUDIO SECTION—
1 2 3 4 5 6 7 8. 9 10 11. 12 13 14 15 16 17 18 19 20 21 22
AC IN foisseyg Tow a] Q371,471
(DECK A}
-7.9
1071 (2/2) M5218AP
C401
0.47— SOV
Q161, 261 561,562
LINE MUTE MUTING SWITCH 2st 345
DOLBY B/C
REEL +
aces pameneamee)
A
TO SYSTEM +5V SSN
CONTROL
BOARD(2/2)
HIGH
oa
R405
(See
page
26.)
-rvqioten
fo
[REC
GAIN)
re
|
-
cn502
19P
<+7.5V>-
-
l
|
120V
—~
240V
<—
220V
é
HEADPHONES PJS61 372 R375 LPF
|
A
2
ifone,
|
Me.
(Ne
ooT)
NET
ay
Ae
REC
AMP
1e74
172)
oe
=
4.7e
SOV
5.3K
VOLTAGE
Redibeb
fete
aaen
s18
=
L
L
4.7
me
SN
‘
+
|
:
TYPE
4
2|2
8
RT
ake
(HP
BOARD]
ra
)
=,
.
0
whl
!
;
TYPES
7
p0
>
R376
C373
TO SYSTEM dope = = 7 0 fae Z300r G2) CD
I
CONTROL
BOARD(2/2)
é
601
9371
7)
e
|
|
Ss
TYPE
2
3
eh]
25A1545
——
o
2803402
\
2}
(See
page
26.)
;
MUTING
P
837
t
£Y
(1)
©
|
I
=
Swlice
O
=
i
R373——«RB74
wd
™ 33x 18K
| R. MUTE (A) | ‘ a 2
TO
SYSTEM
R.MUTE
(A)
°
S
|
CONTROL
BOARD(2/2)
SE
ra
ms
ATOU
J501
t
g
(See
page
25.)
i
ii
a
2
|
|
er
a!
5
L920)
1000860000)
|
mae
e
:
Si
2
|
=
=
1507
272)
|
4
Rvg01
i" a
i Dest
SD ©) ©) 2 © © © | & ¢
ih E :
(DECK A)
DIRECTION
301,401
MUTING
TO SYSTEM BIAS
CONTROL BOARD(2/2) RELAY
(See page 26.) ~2.6V
TYPE
(DECK A)
|
L-PB HTREC, H-!
CN602
R643 R&42 R641
Sik 47k 62k
R625 R624 R623 R42
ie eal
@o=e
errs
OOLBY
SWITCH
BIAS
L CH(REC}
GND
_RCHLREC)|
RELAY
DIRECTION
~2.6V
TO TRANSLATION TYPE
BOARD CNSOI 4+ 7.5V
L CH{PB)
(See page 28.) GND(SIGNAL)
RCH(PB)
-7.5V
REEL +
REEL—
+5V
HIGH
{ -7viMoTOR)
3
gx
oF
2
ww Sos
oO
by) CL
( \
| |
|
|
f
nana
re
err be
Q-~G} om Legs
- 0
-7.4 | -7.4
OUT SELECT
ae Q
A SOLBY B/C
uw
ss
Q131,231
EQ SWITCH A
A DOLBY ON/OFF
R165
RIGS LINE OUT L
Q861,862
PB SELECT
“A/B
(DECK B)
DOLBY NR
REEL+
TO SYSTEM BEERS
CONTROL BOARD (2/2) +5V
HIGH
(See page 26.) ~7V(MOTOR)
Q151,251
R265 LINE OUT R
EQ SWITCH B ‘
MC 4066BCP
PB SWITCH
A/B
(DECK B)
+7.5V
L CHIPB)
GND(SIGNAL)
TO
MD
HX
BOARD
R
CH(PB)
CNP31 ~7.5V
(See
page
28.)
REEL
+
REEL —
+5V
DUBBING
gLLEVEL
=
PANEL
BOARD(3/3)
REC SWITCH
LINE /DUBBING
HIGH
[ -rvimorors
(DECK 8)
BIAS
L CHI(REC)
GND
R CHIREC)
TO MD HX BOARD RELAY
CNP33 2) ey
(See
page
28.)
DIRECTION
QUICK
-2.6V
L TYPE
7.7
+7.5V.
ae,
La,
Q651 “ 1
MUTING SWITCH 2845 Shan REC GAIN: R55 =
“, (6)
= (0)
PB SWITCH
A/B
r
0,81 “8 _075
REC SELECT REC/ PB
LINE /DUBBING SELECT
nN
ne
ine
fer}
CH
Nt
C35!
¥
C451
876
ZLSL2
TO SYSTEM ee a
CONTROL BOARDI2/2) Gee ne |_| |_| 2
(See page 25.) ‘% NOT REPLACEABLE: BUILT IN TRANSFORMER |
{
eee | SS eee eae =
TO SYSTEM A\ $701 t
CONTROL BOARD(2/2) REE | 0) ‘cw |
(See
page
26.)
ks
be
|
|
76-,|)%
|
é
~2.6V
;
EXCEPT
E
MODEL)
WV
-2
x
‘a
Co
i
t
t
R452
ay 5-6k 0.47% SOV [0.478 SOV
REC SWITCH
A/8
875
1N4148M U
SWITCH
72
1N4148M
BIAS maa Pecast oc eae ome
OFF OPE
| /\M/\ ON
(DECK 3)
sae “I
~ (Ee (4) (3 (2 (9 (3) CN702
I Os TRANS-) Lope
56 6 6 liromen |
aco _fwr_[ReD___fYeEL_ [wv |wet_ [RED BOARD s|4]s}2
pee ee - aT 1 8 oF
oe
EO
Oe
eal
anal
POWER
SW
REC EQ SWITCH
d3geS0¥ 1 IW
90531
| py
Ga
R691 R690
k 56k
36
Panes i
36k 62k
100
R68g
47k
REB3 R682
30k 36k
L-PB, M-REC, H-MPX
OARD AMS SWITCH
A/8
R485
K
R672 E R671 fl R670 669 R&68
Ree ah
R666 R665 R664 R662
39k 200k 220k 56k
eet
TO SYSTEM POWER IN Cts sue
CONTROL BOARD (2/2) ann eat fe fea | a
Fd ei eae a et Es ge te i | ee
vF2 |
VFI
(See page 25.)
Q705
+7.5V REG
B AOLBY B/C
R721
47%
Q705
2SB1375
+5.3V
I
R677 R676 R675, | 674
180k 82k 33k ee aaa
C
a
J
Ree
Re a
be alee 3
=f
peo
eel
aa
Pte
E ee aise as = ie lsl
| en 3 SEE
IN SELECT . :
Ky)
B
DOLBY
ON/OFF
:
4l-7.4|
0
{EQ BOARD (2/2))} cneo2ii/2) | | Letsrel>) ue + § 3
OO = [EM Meter AMP z = rt
Ran ‘ : 6 Faesov
:
4
4
cn
pals
: 0 os
eye)
IC603_MC14051BCP i DOLBY NR
27k
TO SYSTEM
HSV CONTROL BOARD(2/2)
R678
R673 ak
yy
0720
IN4|46M
é
me 1¢508 (1/2)
= Rs 8 “aesssér phetssexs)
gS . 7 40.4 AMS AMP
60
a | C593
Ases | 0.022 .
GND
ia
on
wr
0706,708
3
4p
POWER 2209
SWITCH —e
ANS cs8s
HS = 220p
9 ievo1 72
RIC4S5EP
8
rae,
aan lt
eer)
TO SYSTEM
CONTROL BOARD(2/2) @
(See page 25.) 3
{
>
oN ai as Le +7 5V
9. Nx é ~
Be]
]
a
(C701
[nr
e
“
aed
i
o
CONTROLLER
E
it
|
586
4
;
~22y 1 {2.2 SOV 1 Werden
-24.6 2eis7s 329 MOR Ss os e | ’
~7.5V
:
parse
SYS-7.5¥>-
4
0
ra
uo
Za
3
*
R294
. 1508 (2/2) Sle Blo as . 4 ics09@/2 189
fa 2S g 2 3 AC4558P
0703,704
0707
oe
a
(2
a"
Fe
ale
can
—22V REG , is OG 2 5 mm © BRS a a cies,
o =e = alltel Fe oo ee a ~ ee
_ _ a 1 ee al = : a5 jw 86 aes: : WoW
on
:
ao
a
BR
RS
cw
OS
Zz
too
<= 9 a ax oO = =
ane
© M
TO SYSTEM
CONTROL BOARD (2/2)
(See page 25.)
TO SYSTEM TO SYSTEM
CONTROL BOARD(2/2) CONTROL BOARD( 2/2)
(See page 25.) (See page 25.)
—19—
=90=
23
e IC Block Diagrams
IC506 MC14053BCP
Note:
All capacitors are in wF unless otherwise noted. pF: uuF
5OWV or less are not indicated except for electrolytics
and tantalums.
All resistors are in 2 and '/,W or less unless otherwise
specified.
fur-AF : fusible resistor.
Note:
The components identi-
fied by mark Aor dot-
ted line with mark
are critical for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro spéci-
fié.
[ ] : adjustment for repair.
Voltage is dc with respect to ground under no-signal
conditions.
no mark: PLAY
( ): REC
A: DECKA
B: DECK B
Voltages are taken with a VOM (Input Impedance 10M).
Voltage variations may be noted due to normal produc-
tion tolerances.
Signal path.
>> : PB (DECK A)
>>) : REC (DECK A)
[> : PB (DECK B)
[>> : REC (DECK B)