Kenwood KA 4040 R Service Manual

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KA-404OR

CIRCUIT DESCRIPTION

Pln No. Pin nams l/O Name Ducripticn

30 PIOIINITO I REMOCON IN Remote control signal input pin.

31 PTHOS | RSWI (TAPEZAI) REC uut selectnr state setting input pin (TAPEZ ~
TAPEl). (Low when active.)

32 PTHOZ l RSWI (CD) REC out selector state setting Input pin (CD).

(Low when active.)

33 PTH01 I RSWI (TUNER) REC out selector state setting input pin (TUNER).
(Low when active.)

34 PTHDO | RSWI iAUX) REC out selector state setting input pin (AUX).
(Low when active.)

35 TIO | Unused.

36 TH l Unused.

37 P23 | KEYIN lADPT/TAPE3] ADPTITAPE3 key input pin (low when active). Enters
the input mode during backup.

35 PZZIPCL I KEVIN (SOURCE DIRECT) SOURCE DIRECT key input pin (low when active).
Enters the input made during backup.

39 PZl/P'Tol l KEVIN (MUTING) MUTING key input pin (low when active). Enters the
input mode during backup.

40 PZOIPTUO l KEVIN (LOUDNESS) LOUDNESS key input pin (low when active). Enter!
the mom made during backup,

41 POI/SI ) KEYlN (SUBSONIC) SUBSONIC key input pin ilaw when active).

42 PDZISO I KEVIN (POWER) POWER key input pin [low when active). Enters the
input mode during backup.

43 POI/SCK I REI A ROTARY ENCODER A signal input pin. Enter: the inv
nut made during backup.

44 POO/INT4 l REI B ROTARY ENCODER B signal input pin.

45 Fix! 0 ADPTITAPEZ3 LED ADPTITAPES LED control pin (low when active). No
pull-up resistor is incorporated by a mask option.
Enters the input made during backup.

46 FIZZ O MUTING LED MUTING LED control pin (low when active). No pull-
up resistor is incorporated by a mask option. Enters
tha input mode during backup,

47 P|21 0 LOUDNESS LED LOUDNESS LED control pin (low when active). No
pull-up resistor is incorporated by a mask option.
Enters the input made during backup.

8 P120 0 SUBSONIC LED SUBSONIC LED control pin (low when lctive). No
pun-up resistor is incorporated by a mask option.
Entets the input made during backup.

49 P133 0 SOURCE DIRECT LED SOURCE DIRECT LED Control pin [low when active).
No pun-up resistor is incorporated by a mask option.
Enters the input made during backup.

50 Pl32 0 POWER LED POWER LED contrnl pin (low when active). No pull-
up resistor is incorporatsd by a mask option. Enters
the input mode during backup.

5 Pl3l O PHONO LED FHONO LED control pin ilow when active). No pull-
UD resistnr is incorporated by a mask option. Enters
the input mode during backup.

52 mo 0 co LED on LED cantrpi pin (low wnan active). up pull-up
resistor is incorporated by a mask option. Enters the
input mode during backup.