Sony SPP-M937, Service Manual

Page: 29 / 39

– 40 –
U11 KS58015DTF (BASE MAIN BOARD)
r
IC BLOCK DIAGRAMS
U6 TA31103F (BASE MAIN SECTION)
U7 TA31103F (HAND MAIN SECTION)
2
1
E-RECT PRE OUT PRE NF VCC VREF THROUG RO2 RIN EXP OUT RO1 COMP MUTE EXP MUTE
4
FIL1 OUT
3
FIL2 IN
FIL2 OUT
+
–
+
–
5 9 8 7
6
IN2
C-RECT
C-NF
FIL1 IN
COMP OUT
10 11 12
24 20 21
22
23 19 17 18 15 14 13 16
GND
MIC IN
MIC OUT
MIC NF
∆
G
VREF
+
–
VREF
VREF
SWITCH
CONTROL
+
– +
–
MIC AMP
SUM
AMP
+
–
+
–
∆
G
VREF
VREF
PRE AMP
SUM
AMP
RO1
AMP
COMP
MUTE
EXP
MUTE
THROUG
THROUG
IN 2
AMP
FILTER
AMP 1
FILTER
AMP 2
+
–
VREF
RO2
AMP
+
–
2
3
1
8
9
10
11
12
13
14
7
5
6
4
VSS
OSC IN
OSC OUT
TEN
ST
GS
VDD
D3
D2
D1
D0
MUTE
TONE OUT
NC
DATA
LATCH &
DECODER
ROW &
COLUMN
TONE
COUNTER
CONTROL
CIRCUIT
D/A CONVERTER
& MIXING
OSC
CIRCUIT
MUTE
LOGIC
MUTE
DRIVER