akira CT-21XF9, Service Manual

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Model No: CT-21XF9A
Version 1.0
5. Repair data for IC TA8403(N401)
TA8403 is the vertical output power amplifier IC of CN-9, the pin functions and repair
data of it is listed in the table 7.
Table 7 Pin functions and repair data of TA8403
Index type multimeter (r=20k )
Resistance for GND
(RxlK) Pin Symbol Function Quiescent
state (v)
Dynamic
state (v) Red pen
measure Black pen
measure
1 GND Connect to ground 0 0 0 0
2 OUT Field pulse output 15 15 4 9.5
3 Pump power supply input 24.5 24.5 4.4 2
4 IN V sawtooth pulse input 1 1.1 2.2 2.2
5
Connet to Phase
compensate capacitance
0:8 0.8 3.6 9.0
6 Vcc Power supply pin
24.5
24.5 3.5 7.3
7
Pump power supply
output
1.2 1.2 5.5 11
6. Repair data for IC AT24C08(N002)
AT24C08 is the Memory of CN-9, the pin functions and repair data of it is listed in the table 8.
Table 8 Pin functions and repair data of AT24C08
Index type multimeter (r=20k )
Resistance for GND
(RxlK)
Pin Symbol Function
Quiescent
state (v)
Dynamic
state (v)
Red pen
measure Black pen
measure
1 A0 A0 address pin 0 0 0 0
2 A1 A1 address pin 0 0 0 0
3 A2 A2 address pin 0 0 0 0
4 Vss Connect to ground 0 0 0 0
5 SDA Inter IC Bus data line 4.5 4.5 5.6 22
6 SCL Inter IC Bus clock line 4.3 4.3 5.8 22
7 TEST Test terminal 0 0 0 0
8 YDD +5V supply input 5 5 3.6 8.5