Sony NV-U74 Service Manual page 33

• IC Block Diagrams
– MAIN Board –
IC0111 S-1167B15-M5T1G
VIN 1
VSS 2
ON/OFF
ON/OFF 3
CONTROL
IC0112 S-1323B2JNB-N9QTFG
IC0124 S-1323B30NB-N8PTFG
VOUT 1
OVERCURRENT
PROTECTION
+
–
VSS 2
REFERENCE
VOLTAGE
IC1504 S29AL016D70BFI010E-AL3
VCC
DETECTOR
TIMER
ERASE
VOLTAGE
GENERATOR
SECTOR
PROGRAM
SWITCH
VOLTAGE
GENERATOR
STB
A21 C4
ADDRESS LATCH
A20 D3
A19 D4
A18 C3 X-DECODER
A17 B2
A16 E6
A15 D6
A14 C6
CELL
A13 A6
MATRIX
A12 B6
A11 D5
A10 C5
A5 B5 A2
C2 D2 B1 A1 C1 D1 E1
5
OVERCURRENT
PROTECTION
+
4
–
REFERENCE
VOLTAGE
4
ON/OFF
3
CONTROL
H6 H1 G4 F6 A3 B4 B3 A4 G1 F1
STATE CONTROL
&
COMMAND
REGISTER
CHIP
ENABLE/
OUTPUT
ENABLE
LOGIC
STB
INPUT/
DATA
OUTPUT
LATCH
BUFFERS
VOUT
NC
VIN
ON/OFF
E2 H2
E3 DQ2
H3 DQ3
H4 DQ4
E4 DQ5
H5 DQ6
E5 DQ7
F2 DQ8
G2 DQ9
F3 DQ10
G3 DQ11
F4 DQ12
G5 DQ13
G6 F5
NV-U74
33