Kenwood DPX 501 UY Service Manual

Page 11

DPX501/501U/501UY

DPX-MP2090U

MICROCOMPUTERS TERMINAL DESCRIPTION

Pin No. Pin Name l/O Application Processing Operation Description
H: Mute ON, L: Mute OFF
48 ZERO M | 0-bit mute detection
(No distinction of Lch/Rch)

49 DE-EMPHASIS O DAC de-emphasis control H: De-emphasis ON, L: De-emphasis OFF
50,51 NC Not used Opened output L fixed

Laser pick-up inner circumference detection
52 LIM SW | H: Inner circumference

SW signal input
53 DISC NORMAL 0 Media discrimination result output (Not used) H: Normal disc, L: Other disc
54 DISC H RW 0 Media discrimination result output (Not used) H: High reflecting RW disc, L: Other disc
55 DISC RW 0 Media discrimination result output (Not used) H: Normal RW disc, L: Other disc
56~59 TEST OUT4~f 0 Output for test Opened output L fixed
60 VCCZ - Power supply input Connects to BU3.3V
61 TEST OUTO 0 Output for test Opened output L fixed
62 V88 - Power supply input Connects to GND
63~66 NC - Not used Opened output L fixed
67 TEST |N3 | TEST |N3 Pull-down connection (L: Normal/H: During test)
68 MODEL SEL | Model determination L: DXM-6810W (X32683), H: DXM-6820W (X32-587)
69 E2P WRITE | TEST |N11E2P writing permission Pull-down connection (L: Normal/H: During writing)
70 UNIQ ID | TEST INO: Uniqe ID writing permission Pull-down connection (L: Normal/H: During writing)
71 ~73 NC - Not used Opened output L fixed
74 SEARCH 0 Searching situation output H: During seaching, L: Normal
75,76 NC - Not used Opened output L fixed
77 m 0 DSP reset control L: Reset, H: Normal

DSP command/parameter discrimination H: During parameter transmitting
78 DSP A0 0

signal output L: During command transmitting
79 DA EMPHASIS l DSP DA emphasis input H: emphasis ON, L: emphasis OFF
80 ROM EMPHASIS | Decoder ROM emphasis input H: emphasis ON, L: emphasis OFF
81 m 0 Data output status L: During data output muting, H: During data output
82 m 0 Decoder reset control L: Reset, H: Nornal
83 NC - Not used Opened output L fixed
84 SREO O Decoder SREQ signal output
85 BREQ | Decoder BREQ signal input
86~93 NC - Not used Opened output L fixed
94 AVSS - Analog power supply input Connects to GND
95 NC - Not used Opened output L fixed
96 VREF - Reference voltage input Not used: Connects to GND
97 AVCC - Analog power supply input Connects to BU3.3V
98~100 NC - Not used Opened output L fixed

11

Page 29

DPX501/501U/501UY
DPX-MP2090U

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X34-415x-xx (2/3)

measurements shall be carried out (exposed parts are acceptably insulated trom the supply circuit) before

A Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance
the appliance is returned to the customer.