Sony TC-WR665S - Audio Section Schematic

TC-WA7ES/WR565/WR665S
@ WAVEFORMS — AUDIO SECTION —
CHi FREQ=105kHz
CHi P-P =14,8V
iC81
CH1 FREQ=105kHz
CHI P-P =101V
T51 ©
Note:
* All capacitors are in wy F unless otherwise noted. pF: yw yw F
SOWV or less are not indicated except for electrolytics and
tantalums.
* All resistors are in Q and 14W or less unless otherwise
specified.
. : B+ Line
’ > B-Line
. Cc] : adjustment for repair.
* Voltage and waveforms are dc with respect to ground under
no-signal (detuned ) 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.
* Signal path.
>> :PB(DECKA)
C> :PB(DECKB)
[->>: REC ( DECK B)
* Abbreviation
CND: Canadian
G : German
AUS : Australian
CH_: Chinese
5-4. SCHEMATIC DIAGRAM (AUDIO SECTION)
1 2
A [ AUDIO BOARD } (DECK B)
M2 +r!
ee. (MY It
B wovor Ng 7°
I
M1 SPEEA |
capstan (MJ te &
MOTOR iz 4
ai
HRPE101
RECORB/PLAYBACK/ERASE |
ee CNP32
won nna nn 5 (SU-7P)
02
aa a
3
4
R72 22k
Q71
2SA812
RV71
10k
100p
]
1 TAPE SPEED
(HIGH)
Q71
SPEEB CONTROL
TAPE SPEED
(NORMAL)
C28 0
C31 (2/2)
BPC457062
5 | 6 | 7
@53
BIAS ON/OFF
C52 2200p
Q52
2501622 Q51, 52 10k
RS BIAS OSC
5.6
REC BIAS
L=CH
C89 22 1éV
REC BIAS
R-CH
8 9
10
11 12
[ LEAF SW BOARD ] (DECK B)
_ CNPS1
SYSTEM CONTROL
BOARD
CN803
(Page 22)
ROTATION BET
WR565, WR665S
ain eee [----- enero
CONNECTOR BOARDS
| |
CNP3Z0 |
(Page 22) (@) | 2 i
Lo
ale
Ly
{
+7,5V
L CH (PB)
GND
i
M2 a (SE
oo meee (MY [el
a MOO ee es
REEL+ ina
REEL - SYSTEM CONTROL ”
BOARD
+5V CNP802
ore (Page 22) SPEED p44
-7.5V (MOTOR
M1 SPEEA |
CAPSTAN } +5v qf |
MOTOR avi
il
|
HP101
PLAYBACK
HEAD
BIAS
L CH (REC)
GND
R CH (REC)
RELAY
SYSTEM COMTROL |
BOARD
CNP803
~2.6V (Page 22)
TYPE
13 14 15 16 17 18
[ LEAF SW BOARD ](DECK A)
STOP DET
SYSTEM CONTROL
|
eee! 70U BOARD
HALF CN802
HALF BET ie pees)
S, REEL
|
ee |
Ic81
NJL514K-B
| ROTATION DET
|
J
CNJ31
TAPE SPEED] +7,5V
Cub: L CH (PB)
Q71 GN (SIGNAL)
Sarge RU NORMAL/HIGH H (PB)
sod ae SWITCH ie CONNECTOR
-7.5V BOARD
SOE SPEED REEL+ CNP8O1
(NORMAL) |- REEL- (Page 22)
+5V
HIGH
~7.5 (MOTOR)
1031 (1/2)
#PC457062
PB LEVEL
L
RV11
1k
RV21
1k
PB LEVEL
R
1031 (2/2}
uPC 457062
PB AMP
= 99 =