Kenwood KDCW 3041 GY Service Manual

Page 6

KDC-W241AY/W241GY/W3041A/W3041AY/W3041G
/W3041GY/W312A/W312AY/W312G/W312GY/W3l ZSAY

MICROCOMPUTERS TERMINAL DESCRIPTION

Pin No. Pin Name IIO Application Truthllzllaelue Processing Operation Description

43 PON CD 0 CD mechanism power supply control H: Power ON

44 CD LOEJ {/0 CD motor control (1) Refer to the truth value table

45 CD MOTOR l/O CD motor control (1) Refer to the truth value table

46 VFD CE 0 VFD control request

47 CD DRIVEMUTE 0 Motor driver mute output

48 CD CCE 0 CD mechanism chip enable

49 NC - Not used

50 CD MRST 0 CD mechanism p-com reset H: Normal, L: Reset

51 ~53 NC - Not used Output L fixed

54 CD MUTE | CD mute request L: Mute request

55 CD DISC12 SW | 12cm disc detection Pull-up (B.U.)

56 ROTARY COW | VOL key input Detects pulse width

57 ROTARY CW | VOL key input Detects pulse width

58~61 NC - Not used Output L fixed

62 VCCZ -

63 NC - Not used Output L fixed

64 V88 -

65 NC - Not used

66 TUN IFC OUT I Front-end IFC-OUT input H: Station tound, L: No station

67 PON EXT GND l/O ICZ external input quick charge control :igjhlizzli33'300'::{iii/Ifsngjgigsztlffoitfi

68 MUTE l/O Mute L: Mute OFF, Hi-Z: Mute ON

69 ANALOG CON 0 AUX/LX audio switching 22;;St?£:f£éi;§;::::::ei firsmu "we

70 LX RST O Forced reset to slave unit H: Reset, L: Normal

71 LX CON 0 Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF

72 LX MUTE | Mute request from slave unit H: Mute ON, L: Mute OFF

73 LX FlEQ M 0 Communication request to slave unit

74 NC - Not used

75 LX FlEQ S | Communication request from slave unit Pull-down (GND)

76 PWIC SVR O SVR discharging circuit 2:323d5:£::af;:cpeomeernflfF and momentary

77 PWIC STBY 0 Power IC standby control Power ON: H, Power OFF: L

78 PWIC MUTE 0 Power lC mute STANDBY source/Momentary power down: L,
TEL mute: L

79 m | ACC power supply detection ACC found: L, No ACC: H
BU found: L, No BU/Momentary power down: H

80 BU DET | Detection of momentary power down (Operates after less than 4ms after momentary
power down is detected)

81~83 NC 0 Not used Output L fixed

84 TUN SMETEFt | S-meter input

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KDC-W24i AY/W24i GY/W304i A/W304i AY/W3041 G

/W304iGY/W312A/W312AY/W312G/W312GY/W312SAY

MICROCOMPUTERS TERMINAL DESCRIPTION

Pin No. Pin Name IIO Application Elli Processing Operation Description
85 TYPE1 | Destination switching (3) Refer to the truth value table
86 TYPE2 | Destination switching CD Refer to the truth value fable
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88 LINE MUTE l Line mute detection TEL mute: Below 1V, NAVl mue: Over 2.5V
89 OFFSET DET | Power IC offset detection
90 P82 2 0 Power supply 10 control 51) Refer to the truth value table
91 P82 1 0 Power supply IC control (ID Refer to the truth value table
92 PS1 1 0 Power supply IC control (ID Refer to the truth value table
93 PS1 2 0 Power supply IC control (4) Refer to the truth value table
94 PS1 3 0 Power supply IC control (ID Refer to the truth value table
95 NC - Not used Output L fixed
96 AVSS -
97 REF CON 0 VREF control Connects to VREF
98 VREF -
99 AVCC -
100 LX DATA S | Data from slave unit Pull-down (GND)
-Truth value table
<9 CD motor control ({3} Power supply IC (IC4) control
CD motor CD loading/eject SEL1 (Pin 10)
Stop L L PS1-2 PS1 -3 PS2-1 ILLUMI P-CON P-ANT
Load H L L L L OFF OFF OFF
Ejec H H L L H ON OFF OFF
Brake H Hi_Z H L H ON ON OFF
H H H ON ON ON
(3 Destination switching
TYPE 2 TYPE 1 SEL2 (Pin 11)
(Pin 86) (Pin 85) MOde' PS1-1 PSZ-Z AUDIO/SW5 AM
2.4V 0V KDC-W3037A/W3037G/ L L OFF OFF
W311A/W311G/W4037 H L ON OFF
2.4V 1.2V KDC-W3537A/W3537G H H ON ON
2.4V 2.4V KDC-W237A/W237G