Ic802'S Terminal Name, Waveform And/Or Voltages - Sony TC-K555ES Service Manual

Wi"
TC-K555ES
Pin Waveform and/or Pin
Waveform and/or
No. Voltages No.
Voltages
Clock Signal FF Mode
Capstan Motor Drive Signal
JVl '
@,@
STOP mode: DC 24.5V
FWD mode: DC 13.5V
CD
J
P
-
p
FF Mode:
DC OV
~
..
.1
Counter "0" Output
2.5!J.Sec
M
f
®
0.12Vp-p
Reel Motor Drive Signal in
~
CV
Rewind Mode
STOP mode: DC24.5V
~
REWmode: DC13.5V
2. 5 !J.Sec
IC802's Terminal Name, Waveform and/or Voltages
Pin
No.
CD
CV
@
@
®
®
(j)
@
®
@
(jJ)
@
@
®
@
k-
2msec
I- . . /
8.4msec
2msec
--l.-~
Drive Signal for Grids
G 1
throu
G4 of Fluorescent Display Tube
GND (Ground)
12.5V
26Vp-
RESET Signal
13.5V
Clock Signal
Waveform and/or
Voltages
B
+
Supply Voltage
DC 26V
1.5 kHz Clock Signal (IN
Pulse width varies acco
tape take-up. (Stop mode:
DC or 0 V according to the
of photo transistors)
¢1 or ¢2 - Signal Input from
Transistors fast forward and re
modes:
Drive Signal for "MEMORY"
of Fluorescent Display Tube
B
+
Supply Voltage
DC 26V
-
I.. -/
8.4msec
f\/\v
r
9Vp-p
_--...!..-t
I- ./
2. 5 msec
I
JLJ[ ----l-:-
I- -I
f-
2.1msec
a
@
@
@
@
Pin
No.
~
26Vp-p
~~
I
, ,
..-~
26Vp-p
_--l
-
L..- L...
I I
I
I I
I
I I I I I I
,.....'~'~'
' , .....
1.6msec
i-
r
TEST Terminal
26V
- - - - - - - - - - - - - - 0 V
(
'DP"(dot) )
Drive Signal "-"(minus) of
"MEMORY"
1.6msecFluorescent Display Tube
~
1.2msec
.-j
H HI-
nnn-
r
J .LU.L~-p
0i 1 -
c' c'
7:,-,
~5'
E,'c£S' L,
IMEMORYI
B
+
Supply voltage
26V
-~
26Vp-p
-
~~
I , , '
I , '_
I '
t---r-8.6msecr-r-, ,
r-- :.-' , ' , , ..-'
::::~
, , , 26Vp-p
, , , I
- ,L....,,:::
,~-L
I
I
I I I I I
r-'
~'
:.-'
I
,
-
-
1) In case of all "a" segments are
not lit, i.e., all of the four digits
are "1" or "4".
3) In case of only two out of four
"a" segments lit as in the case
of 2) above.
2) In case of only one out of four
"a" segments lit, i.e., one of the
four digits is "0", "2", "3",
"5", "6", "7", "8", or "9" and
all others are
"1"
or
"4".
Drive Signal for "a" Segment of
Fluorescent Display Tube.
Drive Signal for "b" Segments of
Fluorescent Dsiplay Tube same as
pin
®
for Segment "a".
5) In case of all of the four "a"
segments lit likewise.
4) In case of only three out of four
"a" segments lit as in the case of
2) above.
Drive Signal for "c" Segments
of Fluorescent Display Tube same
as pin
®
for Segment "a".
Drive Signal for "g" Segments of
Fluorescent Display Tube same as
pin
®
for Segment "a".
Drive Signal for "f" Segments of
Fluorescent Display Tube same as
pin
®
for Segment "a".
Drive Signal for "d" Segments of
Fluorescent Display Tube same as
pin
®
for Segment "a':
Drive Signal for "e" Segments of
Fluorescent Display Tube same as
pin
®
for Segment "a".
®
@
®
-30-