Sony HCD-GTR333 Service Manual page 61

• IC Block Diagrams
IC4400 BA4580RF-E2 (2CH DAMP BOARD (3/4)), (3CH DAMP BOARD (3/4)), (4CH DAMP BOARD (3/4))
IC4900 NJM2903V (TE2) (2CH DAMP BOARD (4/4)), (3CH DAMP BOARD (4/4)), (4CH DAMP BOARD (4/4))
IC4905 BA4580RF-E2 (2CH DAMP BOARD (4/4)), (3CH DAMP BOARD (4/4)), (4CH DAMP BOARD (4/4))
IC4906 BA4580RF-E2 (3CH DAMP BOARD (4/4)), (4CH DAMP BOARD (4/4))
IC702 NJM2903V (TE2) (MAIN BOARD (4/4))
7 6 5
8
–
+
2 3 4
1
IC4903, IC4904 IRS2092STRPBF (2CH DAMP BOARD (4/4))
IC4902, IC4903, IC4904 IRS2092STRPBF (3CH DAMP BOARD (4/4))
IC4901, IC4902, IC4903, IC4904 IRS2092STRPBF (4CH DAMP BOARD (4/4))
1
VAA
GND 2
+
OTA
IN- -
3
COMP 4
DETECT
5
CSD
CHARGE/
DISCHARGE
PROTECTION
CONTROL
6
VSS
FLOATING INPUT
CLICK NOISE
ELLIMINATION
VAA+VSS
+
2
COMP
-
PWM MODULATOR
HV
LEVEL
SHIFT
UV
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
HCD-GTR333/GTR555/GTR777/GTR888
UV
DETECT
UV
HIGH
Q
SIDE
CS
HV HV
FLOATING HIGH SIDE
LEVEL LEVEL
SHIFT SHIFT
5V REG
UV
DETECT
DEAD TIME
SD DT
LOW SIDE CS
16 CSH
VB
15
14 HO
13 VS
12 VCC
11 LO
10 COM
9 DT
OCSET
8
VREF
7
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