Head/Sensor/Motor/ Power Supply Section - Sony DPP-MS300E Service Manual

5-5. BLOCK DIAGRAM – HEAD/SENSOR/MOTOR/POWER SUPPLY Section –
HEAD CONTROLLER,
MECHANISM CONTROLLER
IC505
PDT0 23
D0 – D15
PDT1 22
I
PDT2 21
(Page 5-4)
PDT3 20
HDCK 25
LATX 24
A1 – A12
J
DRVX 19
(Page 5-4)
HPS0 5
RESET
A 35
RESX
(Page 5-3)
WR
37 WEX HPS1
WR, RD
RD
C 36 RDX
(Page 5-3)
PCS
B
39 CS1X RCODE0 98
(Page 5-3)
RCODE1 97
NIBCOM
K
91 NIBCOM
(Page 5-5)
RCODE2 96
STPLOW 81
S1702 ON
92 PRESET PRINT 83
FAN
PRESET
SELECT OFF
S1720 OFF
82 DATE (PWSW)
DATE
ON
90
RMTRCCW
RMTRCW 89
D1736
79 PAPER-LED
HMTRCCW 87
PAPER REPLACEMENT
HMTRCW 86
INDICATOR
LED DRIVE
77 PRN-LED
Q1731
D1737 – 1739
PRINTING STATUS
INDICATOR
D1734
FKEY0
76 MEM-LED
MEMORY
FKEY1 100
FKEY2 99
D1733
FMTRCW 84
75 INP-LED
INPUT
FMTRCCW 85
D1735
FPS
74 RIBBON-LED
FEEDER
RIBBON ERROR
INDICATOR
13 14
X502
05
20MHz
121
HEAD901
THERMAL HEAD
PAPER EDGE
TH SENSOR
PH901
DATA1
DATA2
JAMMING
DATA3
DETECT SENSOR
DATA4
PH1861
CLOCK
RIBBON MARK 0
LATCH
SENSOR
STROBE
PH902
RIBBON MARK 1
SENSOR
HEAD POSITION 0
1 3 PH903
SENSOR
HEAD PH1852
POSITION
SENSOR AMP
IC508 HEAD POSITION 1
7 5
6 SENSOR
PH1851
RIBBON CODE 0
SENSOR
PH906
RIBBON CODE 1
SENSOR
PH905
RIBBON CODE 2
SENSOR
PH904
HEAD FAN
M901
M
MOTOR DRIVE
(HEAD FAN)
Q1900
HEAD UP/DOWN MOTOR DRIVE,
RIBBON MOTOR DRIVE
IC1900
IN4 OUT4
10 11
MOTOR M903
M
OUT3
IN3
DRIVE (RIBBON)
7 6
IN2 OUT2
2 3
M902
MOTOR
M
IN1 OUT1
(HEAD UP/DOWN)
DRIVE
15 14
CN1882
5
1 SHEET BIT0
6
SHEET BIT1
7
SHEET BIT2
4
FE MOTOR 0
TO AUTO FEEDER
3
(VPF-A1)
FE MOTOR 1
2
FE POSITION SENSE
3
1
2 FE DESORPTION SENSE
5-9
SYSTEM CONTROLLER
IC503 (4/4)
122 123 125 126 142 140 139 138
SELECTOR PLATEN MOTOR DRIVE
IC1903 IC1901
1
3 2 SWITCH
2
4
6 6 SWITCH
5
12
11 4 SWITCH
13
9
8 8 SWITCH
10
10 1
+5V
4
1
COMPARATOR
5
IC1902 (1/2)
10
14
COMPARATOR
11
IC1902 (2/2)
HIGH/LOW
SPEED SWITCH
Q1902
+3.3V
+3.3V
REGULATOR
MEMORY STICK B+
IC1505
SW5V
PC CARD/
MEMORY STICK B+
Q902
SWITCH
Q906
+5V
VIDEO CIRCUIT B+
+5V
A/D, D/A CONVERTER (IC407),
VIDEO CIRCUIT,
CENTRONICS/PC CARD B+
+5V (DIGITAL SYSTEM)
SYSTEM CONTROLLER (IC503),
HEAD/MECHANISM CONTROLLER (IC505) B+
RIBBON CODE SENSOR LED LED DRIVE
(PH904 – 906) B+ Q1903
+5V
S1871
(RIBBON DOOR DETECT)
54 52
MOTOR +22V
3
7
M
M904
(PLATEN)
5
9
+3.3V/5V REGULATOR
M905 M
IC911
(POWER FAN)
3 VOUT VIN 1
+6.25V SIGNAL B+
3.3V/5V POWER
4
BLOCK
+22V MOTOR B+
CONT
Q902
3.3V/5V
2 +6.25V MOTOR B+
SWITCHING
Q903
POWER
SWITCHING
+5V
REGULATOR
IC110
+5V
REGULATOR
IC404
+5V
REGULATOR
IC504
D1731
POWER
5-10
DPP-MS300E
3.3V ON/OFF
M
(Page 5-7)
AC IN
POWER
CD#
L
(Page 5-7)