Pioneer M-AX10 Service Manual page 46

M-AX10
3. Key Input (IC901)
36 (MD WKUP)
IC901
37 (ATT.THROUGH)
38 (ATT.HOLD)
Microcomputer
39 (INPUT)
40 (ILL)
Key input, indicators and processes
Key Input
ACT
Port
37 10
L
(ATT. THROUGH) (IND ATT. THROUGH)
39 5 (IND IN1)
L
(INPUT) 6 (IND IN2)
38 11 (IND ATT. HOLD)
L
(ATT. HOLD)
40 None
(ILL)
Key Input
ACT
Port
37 13 (DAC VR)
L
(ATT. THROUGH)
39 12 (INPUT2)
L
(INPUT)
38
L
(ATT. HOLD)
40 32 (ILL2)
L
(ILL) 33 (ILL1)
46
SW1 SW2 SW3
Indicator
Process Port
DUAL
Alternates "H" and "L"
alternately at each key
input.
Sets INDIN1 and INDIN2 to
"H" and "L" alternately at
each key input.
Key disabled. Always "L".
Indicator
Process Port
DUAL
ON : "H"
OFF : "L"
INPUT1 : "L"
INPUT2 : "H"
Key disabled.
Cycles Bright/Dark/Off at each key input.
(ILL1, ILL2)
Factory setting: Bright (H, L)
SW4 SW5
Contents of Process
BRIDGE
Alternates "H" and "L"
alternately at each key
input.
Sets INDIN1 and INDIN2
to "H" and "L" alternately
at each key input.
Key disabled. Always "L". Alternates "H" and "L" at
Contents of Process
BRIDGE
ON : "H"
OFF : "L"
INPUT1 : "L"
INPUT2 : "H"
Key disabled.
Bright (H, L)
Dark (L, H)
Lamp Off (H, H)
LED Off (L, L)
IC901 PD5508B9
SEPARATE
Alternates "H" and "L"
alternately at each key
input.
Key disabled with
ATT.HOLD ON.
Key disabled.
Both INDIN1 and INDIN2
always lit ("H").
each key input.
Key disabled with ATT.
THROUGH ON.
SEPARATE
ON : "H" (VOL invalid)
OFF : "L" (VOL valid)
Key disabled with ATT.
HOLD ON.
Fixed at L.
ON : HOLD data valid
VOL invalid
OFF : VOL valid
Key disabled with ATT.
THROUGH ON.