Circuit Description - Kenwood DPC-191 Service Manual

DPC-191/391/492
Pin No. Pin name
74 VDD
75 LRST
76 SQCK
77 SUBQ
78 –
79 YMLD
80 YMCLK
81 ZSENSE
82 YMDATA
83 BLKCK
84 –
1-2 Voltage of pin No. 8 (IC3) / Key function.
KEY V
0.00
0.75
1.00
1.23
1.43
1.69
2.13
2.55
3.0
1-3 Microprocessor periphery block diagram
LMT.
SW
4

CIRCUIT DESCRIPTION

I/O
– SUPPLY VOLTAGE (ESP ON = 4.2V / OFF = 3.2V)
O RESET SIGNAL for MN662740RE, SM5859AF
O SUBQ READ TIMING CLOCK to MN662740RE
I SUBQ DATA from MN 662740RE
O NOT USED
O COMMAND DATA LATCH (LOAD) for SM5859AF
O COMMAND CLOCK for SM5859AF
I SENSITIVE SIGNAL from SM5859AF
O COMMAND DATA for SM5859AF
I SUBQ READ REQUEST SIGNAL IN.
I GND
Key of unit (Remocon)
PLAY/PAUSE (6)
STOP (7)
UP (¢)
B. BOOST / P. MODE
DOWN (4)
REPEAT
MUTE (Only Remocon)
KEY OFF
(KSM-542AAA)
AN8806SB
AN8819
NFB-M
/ / /
Function description
IC5 EXCEPT FOR DPC-191
IC6
SHOCKPLOOF
DRAM
SM5859AF
Lch
IC7
VOLUME
NJM2073M
MN171603
HFJ1
Active
J105
LINE OUT
FROM IC4 (Rch)
/ / /
J102
Rch
Lch
H. P JACK
J103
REMOTE
DPC-191 (M2 TYPE)
/ / /
DPC-391 (M TYPE)