4
CT-405/KXF-W4030
CIRCUIT DESCRIPTION
Pin Pin Name I/O Description ACTIVE
No. HL
1 AUTO BIAS IN O Auto bias control port. A BIAS Other
2 400/12.5K ,F/O O 400Hz/12.5kHz freq. output.
3 R/P HEAD O Control port for recording/playback. Recording Other
4 REC MUTE O Audio muting control on R/P for B deck. Off On
5 LINE/O MUTE O Audio muting control for line out. Off On
6 B MECH VCC O B mecha. solenoid control. Other Stop
7 A MECH VCC O A mecha. solenoid control. Other Stop
8 B SOL O B mecha. solenoid control. On Off
9 A SOL O A mecha. solenoid control. On Off
10 IN/MUTE O Audio muting control for input. Off On
11 AC CHK I Power failure input. AC On AC Off
12 RESET I Reset signal input.
13 NC - Unused.
14 ENCODER IN B I Encoder input B.
15 VSS - Connected to ground.
16,17 CF 6MHz - Main clock(6.0MHz).
18 VDD - Power supply.
19-22 K1-K4 I Key input(k1-k4).
23 TIMER P/R SW I Timer Play/Rec switch input.
24 CCRS LEVEL O CCRS level control port.
25 LEVEL MTR L/IN I Level meter input (Lch).
26 LEVEL MTR R/IN I Level meter input (Rch).
27 NC - Unused.
28 ENCODER IN A I Encoder input A.
29 - - Connected to system cont. data.
30-35 FLD 1G-6G O FLD grid control port(1G-6G).
36-45 FLD P1-P10 O FLD segment control port(S1-S10).
46 VDD - Power supply.
47-50 FLD P11-14 O FLD segment control port(S11-S14).
51 -VPP - FLD power supply(-26V).
52-61 FLD P15-24 O FLD segment control port(S15-S24).
62 A CrO2 SW I A CrO2 switch input. Type 2 Type1
63 A PLAY SW I A play switch input. Stop Play
64 A SENS. PULS I A photo sensor input.
65 A PACK SW I A pack switch input. Tape No Tape Yes
66 B CrO2 SW I B CrO2 switch input. Type 2 Type 1
67 B SENS. PULS I B photo sensor input.
68 B PACK SW I B pack switch input. Tape No Tape Yes
69 B PLAY SW I B play switch input. Stop Play
70 REC FWD SW I Forward recording switch input.
71 REC REV SW I Reverse recording switch input.
72 VDD - Power supply.
73 MPX FILTER O MPX filter ON/OFF control.
74 REC FILTER O MPX filter ON/OFF control.
75 REC EQ O Rec EQ.(I/II) Control. I II
76 SPEED N/H O B motor speed (normal/hi) control port. Nor Hi
77 DOLBY NR B/C O Control port for dolby NR(B/C).
78 DOLBY NR ON/OFF O Dolby NR ON/OFF control port.
79 A MOTOR SPEED O A motor speed (normal/hi) control port. Nor Hi
80 P.B EQ O P.B EQ. Control.
81 MTR AMP GAIN A O Gain control of level meter amplifier.
82 MTR AMP GAIN B O Gain control of level meter amplifier.
1. Pin description of microprocessor
