Sony ICD-UX71 Service Manual page 22

ICD-UX71/UX71F/UX81/UX81F/UX91F
• IC Block Diagrams
IC1002 LV24230LS-TLM-E (AUDIO Board (1/3))
18
LINE OUT L 19
BUFFER
AMP
PGND 20
FM
PGND 21 DEMODULATOR
FM SELECTIVITY
22
PGND
FILTER
RF AND FM
PGND 23
QUADRATURE
MIXER
GND 24
TO
EACH BLOCK
1
IC1003 LM4916LDX/NOPB (AUDIO Board (1/3))
1
IN A
SD 2 CLICK-POP
AND
MUTE 3
MODE CONTROL
LOGIC
BIAS
BYPASS 4
GENERATOR
IN B 5
IC1004 SN74LVC2G66YZPR (AUDIO Board (1/3))
1A 1
1B 2
2C 3
GND 4
ICD-UX71/UX71F/UX81/UX81F/UX91F
17 16 15 14 13
VOLTAGE
STABILIZER
12 PGND
TO
LINE SW
EACH BLOCK
AND
MUTE
PGND
11
STEREO DE-
DECORDER EMPHASIS
10 PGND
TUNING
SYSTEM
9 PGND
FLL TUNING
POWER
QUADRATURE
MANAGEMENT
OSCILLATOR
8 PGND
DIGITAL INTERFACE
TO
2
I C CONVERSION
7 SCL
EACH BLOCK
2 3 4 5 6
10 VDD
9 VOA
8
SE/BTL
7 VOB
6 GND
8 VCC
7 1C
6 2B
5 2A
IC2002 TK77335AM4 (AUDIO Board (2/3))
NC 1
VIN 2
VREF
ON/OFF
CONTROL
VDD 3
500kΩ
VCONT 4
IC2004 LTC3526LEDC (AUDIO Board (2/3))
WELL
SWITCH
SW 1
GND 2
VB
VIN 3 VBEST
VOUT
22 22
8 NC
7
VOUT
6 NC
THERMAL
&
OVER CURRENT
PROTECTION
5 NP
ERROR AMP
ZERO COMP
SLEEP COMP
VREF
CLAMP
SLOPE COMP
CSS
PK
MODE
COMP
CONTROL
GATE DRIVERS
AND
LOGIC
ANTI-CROSS
CONDUCTION
THERMAL
VRER VREF
SHUTDOWN
START-UP
UVLO
1MHz
OSC
SHUTDOWN SHUTDOWN
6 VOUT
5 FB
4 SHDN
4M