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D-NF430/NF431
• Waveforms
– MAIN Board –
IC801 tg (XTAL)
IC101 qg (X_O) (FM mode)
1
7
1.1 Vp-p
45.5 ns
500 mV/DIV, 20 ns/DIV
IC801 yd (SYNC)
IC101 qg (X_O) (AM mode)
2
7
(CD play mode)
2.2 Vp-p
5.7 µ s
1 V/DIV, 2 µ s/DIV
IC801 if (RFACI)
Q104 (Collector) (FM mode)
8
3
(CD play mode)
550 mVp-p
200 mV/DIV, 200 ns/DIV
IC401 9 (L2L)
Q104 (Collector) (AM mode)
4
8
2.6 Vp-p
5.7 µ s
1 V/DIV, 2 µ s/DIV
IC250 5 (EXT), Q250 (Gate)
5
2.2 Vp-p
3.7 µ s
1 V/DIV, 1 µ s/DIV
Q250 (Drain)
6
3.6 Vp-p
3.7 µ s
2 V/DIV, 1 µ s/DIV
D-NF430/NF431
1.6 Vp-p
13.3 µ s
1 V/DIV, 5 µ s/DIV
0.5 Vp-p
13.3 µ s
200 mV/DIV, 5 µ s/DIV
2.2 Vp-p
195 ns
1 V/DIV, 50 ns/DIV
1.2 Vp-p
195 ns
500 mV/DIV, 50 ns/DIV
• IC Pin Function Description
MAIN BOARD IC401 TB2169AFG (O)
(FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED MOTOR DRIVE, POWER CONTROL)
Pin No.
Pin Name
I/O
1
FG
O
FG signal output to the system controller
2
XBRK
I
Brake signal input terminal Not used
3
WI
I
Comparator (W) positive pole input terminal
4
VI
I
Comparator (V) positive pole input terminal
5
UI
I
Comparator (U) positive pole input terminal
6
COM
I
Comparator (U/V/W) negative pole input terminal
7
VIN
-
Dry battery connection terminal
8
PGND2
-
Ground terminal
9
L2L
-
Coil connection terminal
10
VCC0
O
Power supply voltage output terminal (+2.3V)
11
PWSW
O
OSC standby signal output terminal
12
VCC2
O
Power supply voltage output terminal (+2.1V)
13
VSTB2
O
Power supply voltage output terminal (+2.1V)
14
VAPC
O
Power supply voltage output terminal (+1.95V)
15
VSTB1
O
Power supply voltage output terminal (+1.25V)
16
VCC1
O
Power supply voltage output terminal (+1.2V)
17
VREF
O
Reference voltage output terminal
18
PWG
I
VAPC power supply on/off control signal input terminal
19
PD
O
Error amplifier output terminal for APC circuit
20
DELAY
I
Delay control signal input terminal
21
INM2
O
Error amplifier output terminal for VCC0 switching power supply circuit
22
-
RF2
Error amplifier connection terminal for VCC0 switching power supply circuit
23
INP2
I
Error amplifier non-invert input of VCC0 switching power supply circuit
24
GND
-
Ground terminal
25
UPCK7
O
FET (bottom side) drive signal output for VD switching power supply circuit
26
UPCKB7
O
FET (top side) drive signal output for VD switching power supply circuit
27
VD
I
Feed back voltage input terminal for VD switching power supply circuit
28
INP7
I
Error amplifier non-invert input for VD switching power supply circuit
29
INM7
O
Error amplifier output terminal for VD switching power supply circuit
30
-
RF7
Error amplifier connection terminal for VD switching power supply circuit
31
VG
O
VG power supply output terminal (+4.5V)
32
C1H
-
Capacitor connection terminal for charge pump (high side) of VG power supply circuit
33
C1L
-
Capacitor connection terminal for charge pump (low side) of VG power supply circuit
34
COLD ST
O
Not used
35
SYNC
I
176.4 kHz clock signal input from the system controller
36
RMCR
O
Wake up signal output to the system controller
37
WAKE
I
Wake up signal input from the system controller
38
CLOCK
I
Serial clock signal input from the system controller
39
DATA
I
Serial data input from the system controller
40
LATCH
I
Latch signal input from the system controller
41
RO3
O
Focus coil drive signal (-) output terminal
42
VD3
-
Power supply terminal (for focus coil drive)
43
FO3
O
Focus coil drive signal (+) output terminal
44
MGND23
-
Ground terminal (for focus/tracking coil drive)
45
RO2
O
Tracking coil drive signal (-) output terminal
20
20
Description
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