akira 14LA/ANZ, Руководство по обслуживанию

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Model No.: 14LAANZACDC
Version: 1.0
Table 5 Function and service data of LA4285 /LA4287 (N601 and N602)’s Pins
DT890D Multimeter
Ground Resistance (K Ω )
Pin
No
Function Description
Voltage of
Pin (V)
Measure with Red
Probe while
grounding Black
probe.
Measure with
black probe while
grounding red
probe
1 Internal input 0V ∞ ∞
2 Small-signal ground 0V ∞ ∞
3 External input 6.3V 54.37 51.37
4 INT /EXT switch 0V
∞ ∞
5 DC volume control 0~4.5V 9.76 9.75
6 Filter 9.28V 14.04 4.94
7 Negative feedback 9.28V 33.5 28.79
8 Power ground 0V ∞ ∞
9 Output 10.3V 38.9 38.3
10 Vcc 23.6V 0.49
∞
Table 6 functions and service data of LA78040 /STV9302 (N451)’s Pins
DT890D Multimeter
Ground Resistance ( Ω )
Pin
No
Function Description
Voltage of
Pin (V)
Measure with Red
Probe while
grounding Black
probe.
Measure with red
probe while
grounding black
probe
1 Inverting input terminal 2.23 800 672
2 Supply voltage 24 770 465
3 Vertical flyback pulse output terminal 2.25 1167 638
4 Ground 0 0 0
5 Vertical output terminal 14.8 365 360
6 Pump supply voltage input 24.5 ∞ 584
7 Reference voltage 2.24 660 600