Kenwood DMC-J3 Service Manual page 5

1-2 Pin description
Pin No. Pin Name
1 /XLAT
2 /XRST
3 NC
4 /LDON
5 BEEP
6 NC
7 /RESET
8 VDD
9,10 X1,2
11 VSS
12 /XSTBY
13 CTL
14 PASS
15 /SP
16,17 NC
18 /CHGOK
19 CHG
20 SYS POWER
21 MLCD C/D
22 MLCD C/S
23 RLCDDATA
24 PWS
25-41 –
42,43 TEST1,0
44 NC
45 VSS
46 TEST
47 NC
48 EPCLK
49 MLCD CLK
50 –
51 MCLD DATA
52 EPCS
53 EPDI
54 EPDO
55 VDD
56,57 KEY0,1
58 ADP
59 BATT1
60 BATT2
61 SPIN
62 /HPLD
63 ADON
64 AVDD
65 AVREF1
66 AVSS
67 NC
CIRCUIT DESCRIPTION
I/O
O Control latch to CXD2655R
O Reset to CXD2655R
O No use
O The laser of the pickup output on/off. L:output.
O Beep sound output.
O No use
– Microprocessor reset.
– Power supply (+5V).
I Main clock generation(12MHz).
– GND
O Standby signal output.
O The feed motor drive signal output.
O Power save by-pass signal for DC/DC
O Inverted switch port of the power supply to system and IC .
O No use
I Rechargeable battery OK signal input port. H:NG
O Rechargeable current control output. H:charge on.
O The switch port of the power supply to system and IC .
O Display driver command check signal output.
O Display driver chip select signal output.
O Remote control display driver serial control data.
O Headphone amp output selector. H:output.
O No use
I Test mode.
O No use
– GND
I Device test.
O No use
O E2ROM serial control clock output.
O Display driver clock signal output.
O No use
O Display driver data signal output.
O E2ROM serial control latch output.
O E2ROM serial control data output.
I E2ROM serial control data input.
– Power supply (+5V).
I A/D voltage matrix key input. key0=unit,key1=:remocon).
I A/D external power supply voltage check input.
I A/D minus power supply data input.
I A/D pulse internal power supply data input.
I A/D spindle drive voltage input.
I HPLD switch check output. H:HOLD off.
O AVREF output.
– Power supply (+5V) for A/D.
– Reference voltage for A/D.
– GND for A/D.
O No use
DMC-J3
Description
5