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HMC-MD777
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
MASTER CONTROLLER
(CD MECHANISM CONTROLLER)
IC300 (2/2)
S604, 613,
53
KEY0
S661 – 665
S611, 612,
54
KEY1
S671 – 676
CD
SYSTEM
KEYS
S602, 603,
KEY2
55
S606 – 610, 636
A
S681
ROTARY
49
JOG0
≠ Cc ±
ENCODER
B
50
JOG1
S681
S-RAM
IC302
22
5
RE
OE
WE
WE
27
6
CE1
20
36 44 75 73
Q300
CN201 (1/2)
SYSTEM CONTROL
(TO STR-MD777)
7
BUFFER
I2CDATA
2
LX
SX
3
Q507
IIC BUS
EXTENDER
8
IC204
BUFFER
I2CCLK
LY
SY
7
6
Q508
9
BUFFER
I2CHELP
Q506
20 29 30
S602, 610 – 613,
97
KEY0
S802
S603, 604,
95
KEY1
S606 – 609
MD MECHANISM
CONTROLLER
IC316 (3/3)
MD
S803 – 806
94
KEY2
SYSTEM
KEYS
S807 – 812
93
KEY3
A
S801
ROTARY
43
JOG0
≠ Cc ±
ENCODER
B
44
JOG1
S801
05
FLUORESCENT
FL DRIVER
INDICATOR TUBE
FL601
IC601
SDATA
DRVDAT
12
16
DRVCLK
13
15
SCK
DRVCS
4
14
CS
DRVRST
RESET
7
13
STB
GRID
LEDLAT
3
1G
12
DRIVE
Q601
20
21
OSC
C606, R635
X1
39
X300
12.5MHz
X2
38
D303
RESET SWITCH
VOLTAGE DETECT
RESET
43
Q301
IC301
AC CUT 48
D304
D305
D309
FLUORESCENT
INDICATOR TUBE
FL DRIVER
FL801
IC801
18
60
FLDATA
31
63
SDATA
GRID
FLCLK
33
62
SCK
D15
54
DRIVE
Q801
FLCS
34
61
CS
58
59
OSC
C816, R802
IC401 (3/5)
3
4
DATA
SWITCH
LEDDATA
5
Q403
IC401 (4/5)
1
2
CLK
SWITCH
LEDCLK
7
Q401
IC401 (5/5)
5
6
STB
SWITCH
LEDLAT
46
Q402
– 47 –
LED DRIVER
IC661
D661 – 665
15
DATA
16
CLK
STB
17
18
CLR
(DIGITAL INPUT CIRCUIT B+)
(I2C BUS INTERFACE CIRCUIT B+)
D+5V (PULL-UP)
MASTER CONTROLLER (IC300),
FL DRIVER (IC601), LED DRIVER (IC661) B+
D+5V (VDD)
MASTER CONTROLLER (IC300),
S-RAM (IC302) B+
CD BACK UP B+
MD BACK UP +3.3V
MD MECHANISM CONTROLLER
(IC316) B+
MD SYS +3.3V
(FL DRIVER (IC801) B+)
M+7V (CD)
CD MOTOR/COIL DRIVER (IC102),
CD MECHANISM MOTOR SYSTEM B+
BD (D) +5V
CD SERVO SECTION
(DIGITAL SYSTEM) B+
BD (A) +5V
CD SERVO SECTION
(ANALOG SYSTEM) B+
RESET SWITCH
Q802, 804
18
Q803
P18
11
15
DATA
D801 – 808
16
CLK
17
STB
LED DRIVER
IC802
NEGATIVE VOLTAGE
VG
REGULATOR
(FL DRIVER (IC601, 801) B–)
D214, 215
Q205, 209
D227
+5V
(LED DRIVER (IC802) B+)
D224
+5V
D225, 308
+5V
D302
D301
D913
B+ SWITCH
Q202
BT201
LITHIUM
D208
BATTERY
D207
+5.7V
B+ SWITCH
REGULATOR
Q201
IC201
D222, 223
RIPPLE
+5V
+8.2V
FILTER
REGULATOR
REGULATOR
Q341
Q210, 211
Q203, 204, 208
+5V
+5V
REGULATOR
MD MOTOR/COIL DRIVER (IC152),
IC203
OVER WRITE HEAD DRIVE CIRCUIT B+
+3.3V
+5V
+3.3V
REGULATOR
REGULATOR
(MD SERVO SECTION B+)
IC191
IC202
+5.7V
M+5.7V (MD)
REGULATOR
MD MECHANISM
D205, 206
IC205
MOTOR SYSTEM B+
RIPPLE
B+
FILTER
Q206
D218 – 221
AUDIO AMP
(IC901) B+
RIPPLE
B–
FILTER
Q207
CS/BS SEL
E
(Page 42)
– 48 –
RECT
CN201 (2/2)
SYSTEM CONTROL
(TO STR-MD777)
12
AC ANALOG (1)
RECET
AC ANALOG (2)
14
RECET
D211
11
VF (1)
TO
FL601, 801
10
VF (2)
6
CS/BS SEL
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