VCC
UVLO
UVLO
FB
Z/C
2
1
4
DRAIN
5
3
GND
DET./ONDEAD TIMER
ZERO CURRENT
TIMER
ON WIDTH
CIRCUIT
STANDBY
PROTECTOR
OVER HEATING
PROTECTOR/
OVER VOLTAGE
LATCH RELEASE/
/VCC(STOP)
VCC(START)
-
+
CIRCUIT
CONTROL
CIRCUIT
SOFT-DRIVE
BURST)SENS.
IDP(LIMIIT/
/VCC(STARTUP ON)
VCC(STARTUP OFF)
-
+
CIRCUIT
START-UP
TIMER
RESTERT
COMPARATOR
OCP THRESHOLD
BURST MODE
COMPARATOR/
OCP THRESHOLD
GND
3
VCC
UVLO
UVLO
FB
Z/C
2
1
VIN
DRAIN
5
9
7
DET./ONDEAD TIMER
ZERO CURRENT
TIMER
ON WIDTH
CIRCUIT
STANDBY
PROTECTOR
OVER HEATING
PROTECTOR/
OVER VOLTAGE
LATCH RELEASE/
/VCC(STOP)
VCC(START)
-
+
CIRCUIT
CONTROL
CIRCUIT
SOFT-DRIVE
BURST)SENS.
IDP(LIMIIT/
/VCC(STARTUP ON)
VCC(STARTUP OFF)
-
+
CIRCUIT
START-UP
CC
VREF/SS
V5/PWON
VIN
FB
GND
EXT
CS
COMP
CNT.
-
+
SHIFT
LEVEL
UVLOcomp
VREF
0.8V
V5
+
-
RESET
CONTROL LOGIC
+
-
+
-
8
7
6
5
4
3
2
1
NC
NC
NC
CONT
VIN
VOUT
GND
CN
SHUTDOWN
THERMAL
LIMITTER
CURRENT
DRIVER
BIAS
REFERENCE
8
7
6
5
4
3
2
1
CC
VREF/SS
PWON
VIN
FB
GND
EXT
CS
COMP
CNT.
-
+
SHIFT
LEVEL
UVLOcomp
VREF
0.8V
V5
+
-
RESET
CONTROL LOGIC
+
-
+
-
8
7
6
5
4
3
2
1
CT
GND
VDD
VOUT
4
2
5
Vref
-
+
3
IC11301
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
IC11201
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
IC11602
RESET IC
IC-DETAIL BLOCK DIAGRAM
IC11601
DR +5V SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
IC11720
F+ SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
IC11801
D +3.8V SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
IC11201 Detail Block Diagram
IC11301 Detail Block Diagram
IC11601 Detail Block Diagram
IC11602 Detail Block Diagram
IC11720 Detail Block Diagram
IC11801 Detail Block Diagram
DMR-EH75VP IC-Detail Block Diagram
DMR-EH75VP
73
Summary of Contents for DMR-EH75VP
Page 6: ...2 2 Precaution of Laser Diode 6 DMR EH75VP ...
Page 8: ...3 Service Navigation 3 1 Service Information 8 DMR EH75VP ...
Page 9: ...4 Specifications 9 DMR EH75VP ...
Page 11: ...11 DMR EH75VP ...
Page 12: ...12 DMR EH75VP ...
Page 13: ...13 DMR EH75VP ...
Page 18: ...6 Location of Controls and Components 6 1 Each Buttons 18 DMR EH75VP ...
Page 19: ...19 DMR EH75VP ...
Page 40: ...10 2 P C B Positions 40 DMR EH75VP ...
Page 50: ...11 1 2 Checking and Repairing of Main P C B 50 DMR EH75VP ...
Page 52: ...11 1 3 Checking and Repairing of RAM Digital P C B Module 52 DMR EH75VP ...
Page 53: ...11 1 4 Checking and Repairing of HDD 53 DMR EH75VP ...
Page 57: ...57 DMR EH75VP ...
Page 120: ...17 1 2 Casing Parts Mechanism Section 2 120 DMR EH75VP ...
Page 121: ...17 1 3 VHS Mechanism Section 121 DMR EH75VP ...
Page 122: ...17 1 4 Packing Accessories Section 122 DMR EH75VP ...