Sony ICF-CD2000 Service Manual page 28

IC601 LB8118M
IN1
1 –
+
IN2 2 –
+
VOUT1 3
VCD
4
ERROR AMP
PWM
CHG DRY 5
CHG MON 6
GND
7
DEAD
TIME
SAWTOOTH
OSC
8
OSCILATION
PWM
+
EXT DRN 9
–
DEAD
TIME
VEXT 10 SW
VEXT-OHG 11
12
IC901 RN5RZ33BA-TR
GND
1
VDD 2 VREF
– +
CURRENT
LIMIT
VOUT 3
44 43 42 41 40
H FOCUS H TRACKING
FORWARD FORWARD
REVERSE REVERSE
DRIVE DRIVE
MAXIMUM
1CH/2CH
VALUE
CHARGE
1.2V
-OVER
CLUMP+ CLUMP+
OFFSET OFFSET
ERROR
ERROR
AMP
AMP
PWM
PWM
ERROR
AMP
1.2V
13 14 15
5 CE
4 NC
39 38 37 36 35 34
H SPINDLE H SLED
FORWARD FORWARD
REVERSE REVERSE
DRIVE DRIVE
MAXIMUM
VALUE
INVERSION
OUTPUT
OR
1.2V
ERROR
AMP
TSD
DEAD
PWM
TIME
PWM
–
+
EXTERNAL
VOLTAGE
JUDGMENT
FORCED
STARTING
16 17 18 19
– 52 –
33 IN4
32 IN3
31 VOUT2
ASP REF
30
29 SL REF
+
–
–
+
28 MUTE
ASP REF
1.2V STARTING S/S
27
26 VOC
ERROR
AMP 25 VLD
VAPC
24
APC DRV
23
0.7V
VREF
2.7V
20 21 22