FUNAI 27C-250, Руководство по обслуживанию

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1-11-1 HE244PIN
IC PIN FUNCTION DESCRIPTIONS
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Model Mark
27C-250 A
27C-254 B
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
1 IN SC2-IN
Input Signal from
Pin 8 of SCART2
A/D
2 IN
PG-
DELAY
Video Head
Switching Pulse
Signal Adjusted
Voltage
A/D
3 IN
POW-
SAF
P-ON Power
Detection Input
Signal
A/D
4 IN END-S
Tape End Position
Detect Signal
A/D
5 IN AFC
Automatic
Frequency
Control Signal
A/D
6 IN V-ENV
Video Envelope
Comparator
Signal
A/D
7 IN KEY-1
Key Scan Input
Signal 1
A/D
8 IN KEY-2
Key Scan Input
Signal 2
A/D
9 IN LD-SW
Deck Mode
Position Detector
Signal
A/D
10 OUT ST-S
Tape Start
Position Detector
Signal
A/D
11 - N.U. Not Used -
12 -
N.U. Not Used
-
13 OUT
D-V-
SYNC Dummy V-sync
Output
H/Hi-z
14 IN
REMOC
ON-IN Remote
Control Sensor
L
15 OUT C-ROTA
Color Phase
Rotary
Changeover
SIgnal
H/L
16 -
N.U. Not Used
-
17 - N.U. Not Used -
18 OUT RF-SW
Video Head
Switching Pulse
H/L
19 - N.U. Not Used -
20
A
- N.U. Not Used -
B IN DAVN-L
VPS/PDC Data
Receive = “L”
L
21 - N.U. Not Used -
22 - N.U. Not Used -
23 OUT
POWE
R-LED
“POWER” LED
Signal Output
H
24
OUT
CAS-
LED
“CASSETTE”
LED Signal Out-
put
H
25
OUT
TIMER-
LED “TIMER” LED
Signal Output
H
26
OUT
REC-
LED Recording LED
Control Signal
27 -
N.U. Not Used
-
28 -
N.U. Not Used
-
29 OUT
AUDIO-
SW-1 Audio IN/OUT
Control Signal
H/L
30 OUT
AUDIO-
SW-2 Audio IN/OUT
Control Signal
H/L
31 IN
REC-
SAF-
SW
Recording Safety
SW Detect (With
Record tab="L"/
With out Record
tab="H")
H
32 - N.U. Not Used -
33 OUT
D-REC-
H Delayed Record
Signal
L
34 IN RESET
System Reset
Signal (Reset=”L”)
L
35 IN XC-IN Sub Clock -
36 OUT
XC-
OUT
Sub Clock -
37 -
Vcc Vcc
-
38 IN
X-IN Main Clock Input
-
39 OUT X-OUT Main Clock Input -
40 - Vss Vss(GND) -
41 -
N.U. Not Used
-
42 -
N.U. Not Used
-
43 IN
CLKSE
L Clock Select
(GND)
L
44 IN
OSC
IN
Clock Input
for letter size
-
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level