Sony TC-WR445 - Printed Wiring Board Layouts

TC-WR445
5-5. SCHEMATIC DIAGRAM (AUDIO SECTION)
1
2 3 4 5
HP 101
PLAYBACK
AUDIO
BOARD]
snes
Rat
A
fees
uPC4570C-
|
220
ie ‘.
! , |
t 1
| O-O55
L-CH | «+»
x [PB LEVEL -L
i I
1 i
4 1
1 1
' H
B 120
H ;
I '
1 ; RV411
PB LEVEL R
R-CH <— id, (3) => 2.2k
390
H H
' 1
|
Pd)
C ICU (172)
wPC4570C~1
HRPE 101
1401 (272)
RECORD/PLAYBACK/
uPC4570C-|
ERASE HEAD
i
1 1
i} t
1 a
Ts,
D
L-CH
als
7
RV3O1
—
(7)
Tams
PB
LEVEL
L
t
t
ie
t
;
R305
62k
0cb22H
pO
H
'
‘ i}
! !
1 1
' i)
EF R-CH age . Cogan i 7 ae
‘
:
(4)
.
' i)
' H
' 1
, i
t i)
! i)
' 1
' '
|
i}
oe
t i
1 i}
t '
F ' '
' i]
' H
! H
! {
id
! i
1 t
! 1
1 1 AN.
H y
G cae. ]
' H
| i |
1 i}
1 '
1 1
1 t
1 1
1 1
: |
1 '
1 1
1 2
! {
1 !
1
H 2
t H
1 '
t 1
t !
4 !
' '
' H
! 1 |
! i
1 1
i |
I ‘
1
! !
1 1
‘ H
fT ]
{ H
Poo
J '
' t
t 1
1 '
' 1
V i}
|
J
Q621,
622
j
t
0623
1
|
BIAS
2SAi115
Osc
0
(-6.
Bs
1
1
i
H
Q621
H
H
280945
i
H
{
t
1
1
1
1
1
1
'
t
1
|
'
1
1
!
K
' i)
! '
i} i}
' i}
! '
OHO
,
i X ae goa
i) 1
! '
t 1
P|
! ! R621 R622
L ; (7) 5.6 ba
i) 1
:
emacs 26 =
BIAS ON/OFF
C444
0.0012
oe 27 =
1C641
BOLBY HX PRO
~ $1003
A HALF
rs
$1004
A CrQ2
$1005
REC A
$1008
B HALF
$1009
REC B
$1007
B METAL
$1008
B Crd2
14
TAPE. SPEE®O
(NGRMAL)
TAPE SPEED
(HIGH)
Q651
CAPSTAN MOTOR
CONTROL
REC BIAS
C643
0.472 SOV
[ LEAF SW BOARD ]
!
Qi001
: NJLS165KA NJ
|
|
O O © Oo
5 t
R1001 R1002 I
390 390 |
| |
ae
V7 O
R1003 560
a, aie
Woe a aes ine
VV © R1005 300
C)
Yaa
51002
O 51001 B PLAY
i Cred & PLAY =
© © O
‘CAPM—
‘CAPM H/L
‘CAPM+
TRGM+
~ APB_LCH
‘APB_RCH
“BPB_RCH
15 16
srenenenennnne
[MOTOR BOARD]
TRGM-
V+_PB
GNB_PB 76
BPB_LCH ® MAIN BOAR®
(CN801)
V-_PB <See Page 22>
RELAY
BIAS —
‘V-_BIAS
V+_BIAS
-REC_RCH
REC_LCH
VREF_HX
BIAS_HX
HEADEARTH
A HALF
A PLAY
A CrO2
A REEL
TO
B HALF
MAIN BOAR
ae (B) (CN802)
oN <See Page 22>
B REEL 3 Porn
B METAL
B PLAY
B Cro2
ese 28 er
Note :
* All capacitors are in yw F unless otherwise noted. pF: uw wu F
SOWV or less are not indicated except for electrolytics and
. tantalums.
* All resistors are in Q and %4W or less unless otherwise
specified.
* % : indicates tolerance.
* A : internal component.
. w+ : fusible resistor.
Note :
The components identi-
fied by mark or dot-
Note :
Les composants identifiés par
une marque sont critiques
pour la sécurité.
Ne jes remplacer que par une
Replace only with part piéce portant le numéro spéci-
number specified. fié.
ted line with mark
are critical for safety.
° | : adjustment for repair.
° Voltage and waveforms are de with respect to ground under
no-signal conditions.
no mark : STOP
( ) : REC
° Voltages are taken with a VOM ( input impedance 10M © ).
Voltage variations may be noted due to normal production
tolerances.
¢ Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances,
° Circled numbers refer to waveforms.
e Signal path.
=> :FM 37> :PB(DECKA)
3}: REC ( DECK 8)
[> : PB(DECKB)