Sony WRR-800A Service Manual page 30

IC
MAX742CWP-TE2 (MAXIM)
DUAL-OUTPUT, SWITCH-MODE REGURATOR
—TOP VIEW—
FB+ 1 20 CSH+
CC+ 2 19 CSL+
3 A-GND GND 18
AV+ 4 17 EXT+
200
100/ PUMP
5 16
15
12/ 6 15 PDRV_
VREF 7 14 EXT_
SS 8 13 V+
CC_ 9 12 CSH_
FB_ 10 11 CSL_
CC+
2
1
FB+
+
_
3
A-GND
7 12/
VREF
VREF
SELECT
6
15
12/
+
_
10
FB_
9
CC_
NE575DK (SIGNETICS)FLAT PACKAGE
NE575DK-T
LOW VOLTAGE COMPANDOR
—TOP VIEW—
V
CC
+V 1 1
IN OP AMP
(+8V)
+
NE575
_
_V 1 2 OP AMP
IN
+
_
V 1 3
OUT
RECTIFIER
3.9k
RECT. 1 4
IN
RECTIFIER
3.9k
C 1 5
RECT
SUM 1 6
OUT
10k
SUM
AMP
_
COMP. 1 7
IN
+
SUM
AMP
10k
_
V 8
REF
V
+
REF
10k
GAIN CELL 1 9
IN
G
GAIN CELL
10k
10
GND
G
GAIN CELL
NJM78L12UA-TE1 (JRC)+12 V(0.1 A)
POSITIVE VOLTAGE REGULATOR
—SIDE VIEW—
3
IN
GND
2
OUT GND IN
1 2 3
4-2
INPUT
15
12/ : SELECTS VOUTS (±15 V/±12 V)
200
100/ : SELECTS OSC FREQUENCY (200 kHz/100 kHz)
AV+ : ANALOG SUPPLY VOLTAGE INPUT (+5 V)
CC_ : INVERTING COMPENSATION CAPACITOR
CC+ : STEP-UP COMPENSATION CAPACITOR
CSH_ : CURRENT SENSE HIGH (INVERTING SECTION)
CSH+ : CURRENT SENSE HIGH (STEP-UP SECTION)
CSL_ : CURRENT SENSE LOW (INVERTING SECTION)
CSL+ : CURRENT SENSE LOW (STEP-UP SECTION)
FB_ : INVERTING SECTION FEEDBACK INPUT
FB+ : STEP-UP FEEDBACK INPUT
PDRV : VOLTAGE INPUT
SS : SOFT-START TIMING CAPACITOR
V+ : HIGH-CURRENT SUPPLY VOLTAGE INPUT (+5 V)
OUTPUT
EXT_ : PUSH-PULL OUTPUT
EXT+ : PUSH-PULL OUTPUT
VREF : REFERENCE VOLTAGE OUTPUT
200
100/ AV+
5 4
∑
R Q
S
PULSE SOFT-START
15
AND
OSC
PAMP
THERMAL
SHUTDOWN
SQUARE
S
Q
R
∑
20
19 +V 2
IN
18 _V 2
IN
V 2
17 OUT
16 RECT. 2
IN
15 C 2
RECT
14 SUM 2
OUT
COMP. 2
13 IN
12 SUM NODE 2
11 GAIN CELL 2
IN
1
OUT
NJM4558V-TE2 (JRC)FLAT PACKAGE(SMALL)
NJM4560M (JRC)FLAT PACKAGE
NJM4560M-TE2
NJM5532M (JRC)FLAT PACKAGE
NJM5532M(TE2)
DUAL OPERATIONAL AMPLIFIERS
(DUAL-SUPPLY TYPE)
—TOP VIEW—
1 V 8
CC
_ +
2 7
+ _
3 6
V
4 EE 5
20
CSH+
19
CSL+
NJM78M09FA (JRC)+9 V(0.5 A)
13
V+
17
POSITIVE VOLTAGE REGULATOR
EXT+
18
GND
—FRONT VIEW—
8
SS
16
PUMP
14
3
EXT_
15
PDRV
12
CSH_
11
CSL_
INPUT COMMON OUTPUT
(3) (2) (1)
NJM79L12UA (JRC)+12 V(0.1 A)
NJM79L12UA(TE1)
VOLTAGE REGULATOR
2
IN
COMMON IN OUT
1 2 3
S-80735SN-DZ-T1
C-MOS VOLTAGE DETECTOR
—TOP VIEW—
5 4
2
V
1 2 3
OUT V GND
DD
TYPE V V
CC EE
062/072/082/4556A/
M5218/BA15218/ +2 to +16V _2 to _16V
33178/34182 TYPES
+2 to +18V _2 to _18V
4580 TYPE
5532 TYPE +3 to +20V _3 to _20V
CXA1297 TYPE +5 to +12V _5 to _12V
M5219/M5220 TYPES +5 to +22.5V _5 to _22.5V
MC33077DR2 +2.5 to +18V _2.5 to _18V
+1 to +3.5V _1 to _3.5V
NJM2100 TYPE
+2 to +20V _2 to _20V
OP-297 TYPE
OTHERS +5 to +16V _5 to _16V
1
INPUT OUTPUT
COMMON
2
3
OUT
COMMON
1
1
DD OUT
GND
3
V
DD
2
VOLTAGE
DETECT
1
OUT
3
GND
WRR-800/800A