Read Sony AIR-RM10 Service Manual online
AIR-RM10
AIR-RM10
7
7
• IC Block Diagrams
– MAIN Board –
IC901 XC6215B332NR
IC902 XC6215B402NR
IC902 XC6215B402NR
IC903 XC9220C09AMR
EACH CIRCUIT
2
VSS
1
CE
ERROR AMP
VIN
4
VOUT
3
ON/OFF
CONTROL
VOLTAGE
REFERENCE
CURRENT
LIMIT
+
–
VIN
5
CE/CSS 1
VSS 2
FB 3
EXT/
4
+
–
–
CHIP
ENBALE
SOFT START
(INTERNAL)
SHORT CIRCUIT
PROTECTION
MAX DUTY LIMIT
PROTECTION
EACH
CIRCUIT
OE
CE
VOLTAGE
REFERENCE
ERROR
AMP
RAMP
WAVE
WAVE
PWM CONTROL LOGIC
OSC ENABLE
OSC
LOGIC
S
Q
BUFFER
UNDER
VOLTAGE
LOCK OUT
R
RS LATCH
EACH
CIRCUIT
–
+
+
PWM
COMPARATOR
• IC Pin Function Description
MAIN BOARD IC403 R5F212BASNFP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NC
-
Not used
2
SAIR_EEP_SDA
I/O
Two-way I2C data bus with the RF unit
3
FW_MODE
-
Not used
4, 5
NC
-
Not used
6
NRST
I
System reset signal input from the reset signal generator “L”: reset
7
XOUT
O
System clock output terminal (8 MHz)
8
VSS
-
Ground terminal
9
XIN
I
System clock output terminal (8 MHz)
10
VCC
-
Power supply terminal (+3.3V)
11 to 18
NC
-
Not used
19
IR_PWM
O
SIRCS signal output to the remote control transmitter
20
BACK_LIGHT
O
LED drive signal output terminal for the liquid crystal display back light
21
LCD_NRST
O
Reset signal output to the liquid crystal display
22
LCD_RS
O
RS signal output to the liquid crystal display
23
LCD_CSB
O
Chip select signal output to the liquid crystal display
24
PAIRING
I
PAIRING key input terminal
25
LCD_CLK
O
Serial data transfer clock signal output to the liquid crystal display
26
NC
-
Not used
27
LCD_DO
O
Serial data output to the liquid crystal display
28
NC
-
Not used
29
IR_CLK
O
LED drive signal output terminal for remote control transmitter
30, 31
NC
-
Not used
32
LCD_POWER
O
Power supply on/off control signal output terminal for liquid crystal display “H”: power on
33
NC
-
Not used
34
SAIR_PW
O
Power supply on/off control signal output terminal for RF unit “H”: power on
35
SAIR_RST
O
Reset signal output to the RF unit “L”: reset
36
SAIR_GPIO
I
Interrupt signal input from the RF unit
37
FW_TXD
-
Not used
38
FW_RXD
-
Not used
39 to 41
TEST1 to TEST3
I
Test mode setting terminal
42 to 44
NC
-
Not used
45
VDET
I
Voltage abnormality detection signal input terminal
46
KEY_IN3
I
Key input terminal Not used
47 to 49
KEY_IN2 to KEY_IN0
I
Key input terminal
50 to 53
KEY_OUT3 to
KEY_OUT0
I
Key output terminal
54
SAIR_ID_SW
I
S-AIR ID selection switch input terminal “L”: A, “M”: B, “H”: C
55 to 57
NC
-
Not used
58
VMNT2
I
Power supply voltage monitor signal input terminal
59
VSS
-
Ground terminal
60
VMNT1
I
Power supply voltage monitor signal input terminal
61
VREF
I
Reference voltage (+3.3V) input terminal
62
VCC
-
Power supply terminal (+3.3V)
63
NC
-
Not used
64
SAIR_EEP_SCL
O
I2C clock signal output to the RF unit
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