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CIRCUIT DESCRIPTION
Microprocessor (M38173M6-153FP)
Pin Connection
S1S/SCAN8 UI
$140
$13
$120)
CI
$110
S10u
s9Q
$8 LJ
$70
sé6CJ
ss
$40
$3
$20
$1}
GIA
G2AU
G3ALJ
G4AU
GSAU
G6ALI
G7AU
PHITO
TEST MODE
> S16/SCAN7
> S17/SCAN6
f> S18/SCANS
> S19/SCAN4
[> S20/SCAN3
[> S21/SCAN2
[> S22/SCANI1
[> S23/SCANO
O +5V
65 66 67 68 69 70 71
OD -30V O GND O VREF O AMUTE
O AID
(63) O A/D
(160) O A/D
(400)
72 73 74 75 16 77 78 79 80
Ay
ae
ioe)
a
©
=
loa)
™~
be
[oe]
fog)
=
4 33.32 31 30 29 28 27 26 25
SBUSY
O SDATA
O
sp QO STO
DO (PLL)
O CE PLL)
O DI (PLL)
O
(1) Plug the AC cord in the electrical outlet while press-
ing the CD key. (MEMORY
RESET)
(2) The TEST MODE
is cancelled when the AC power
cord is disconnected from the electrial outlet.
(3) a: ALL FL light up. (The display switches to NOR
when
any KEY is pressed).
b: The
VR moves
UP-DOWN
when the TAPE KEY
iS pressed.
VSS
O
XOUT
O
XIN
O
XCOUT
©
CE (BACK
UP)
SCADMKN
PW
YH
UD-301/351
O A/D (1K)
© A/D (2,5K)
© A/D (6.3K)
© A/D (16K)
© KRET3
O KRET2
© KRET1
O KRETO
© RST (DRIVER)
O CLK3 (DRIVER)
© SI (DRIVER)
1 CS (DRIVER)
[ VLED
© DI (GE)
© CLK1 (GE)
© ST (SELECTER)
© DT (SELECTER)
© CLK2 (SELECTER)
© PROTECT
© VDOWN
O VUP
O SPEAKER
© POWER
© TMUTE
c: The NOR>- bar indication is inverted and the var-
ious segments of the DISP indication flicker suc-
cessively when the DISP KEY is pressed.
d: The status of M1 to M5 change as follows:
M1,
M5
M2
M3
O dB
+12 dB
~12 dB
(NOTE) MEMORY
is RESET by TEST MODE.
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