Technics RS-CH7 - Page 17

RS-CH7
RS-CH7
@ FUNCTION OF IC TERMINALS
©1C801 (LC6512A—4604)
vO
Division
Serial data input
Deck 2 Rotation pulse signal of reel
table
Deck 1 Rotation pulse signal of reel
table
vo
Division
PFO
t t
25 PF3
FL port signal output
FL grid signal output
Not connected
FL grid signal output
Not connected
HOLD
ae Connected to GND
.
47
vu QO 3
= >
=
on
TEST
ss
[a [oso
fe)
16
17
8
Fi
_—
o
Connected to GND
Connected to ceramic oscillator
(X800)
Key switch input
Pin 13 is not used and connected to
resistance
Es Keve
EG auicKe
ris | quick
Not used ad connected to
16 ARM2
resistance
7 | no | — |Noteomectos
18
REC2
“L”
level
when
is
on
“H” level when is off
NC
Not
connected
POWER IN a Power ON/OFF detection terminal
| 22 | CLK IN == Clock input for seriai data
| 2s | CLK OUT Ea Clock output for serial data
—23-
Peet cna
Ce ae | — lemma
Pa | wer [1 atewenmaninan
Pee [ore
Control voltage terminal of electric
eee eames
Not connected
Pin 15 is not used and connected to
resistance
Mute key input
Recording bias control voltage
terminal
Rec, amp, mute signal of deck 2
“L” level in mute is off mode
“H” level in mute is on mode
LMT Line out mute signal
Not used and connected to
Recording level detection (at ATLS
position)
vo
Division
Pee | Dolby C LED display
vo
Division
| 2a | DATAIN | 1 | Serial data input
[= [wc oo
27 CNVSS
“L” level when LED is on mode
“H” level when other mode
Encode/Decode select signal
“L” level in encode mode
“H” level in decode mode
Not use and connected to GND
Control for FL micro computer
Serial data output
Music search signal detection
terminal
pees —_] [es [on
=| en | o_
Reset terminal
“L” level when reset is off mode
“L”+“H” level when reset is on
mode
:
:
frp ne [— fomee
fae [ we | — lemma |
em ke Test terminal (“L” level)
Deck 2 Rotation pulse signal of reel
Deck 1 Rotation pulse signal of reel
Deck 2 Reverse Rec. Inh. switch
Deck 2 Forward Rec. Inh. switch
SIME aie select terminal
Deck 2 mechanism mode switch
select terminal
Deck 2 cassette half detection
switch
“L” level in half detection switch is
HALF2 on mode.
“H” level in half detection switch is
off mode.
dS
Deck 2 play select signal
“L” level with PLAY mode.
Clock OSC terminal
Connected to crystal oscillator
Deck 2 Solenoid control signal
“H” level when solenoid is on mode
“L” level when solenoid is off mode
Deck 2 Motor control signal
“H” level when motor is on mode
“L” level when motor is off mode
Deck 1 cassette half detection
switch
“L” level in half detection switch is
on mode
“H” level in half detection switch is
off mode
Deck 1 Solenoid control signal
“H” level when solenoid is on mode
“L” level when solenoid is off mode
Motor speed control signal
“L” level when normal speed
“H” level when high speed
X2 Speed LED display
“L” level when LED is on mode
Deck 1 Motor control signal
“H” level when motor is on mode
“L” level when motor is off mode
-24—