Power Unit Layout - Yamaha SIGMA-G5SII Service Information

5.3.4. Power UNIT layout

G3
Relay Circuit
Relay Circuit
G1 Relay Circuit
24.75±0.10V
Output Circuit
IO PCB
A31 (Main power)
G2
A63 (Main power)
50.00±0.20V
A51, 53 (Main power)
U95
Feeder Power (Block1)
G3
24.75±0.10V
Feeder Power (Block2)
G9 Side Veiw Camera (Head1,
5.8V-6.0V 2)
G21 CPU1, 2 Power Supply
Note:
The voltage adjustment is not required for CPU power "G21".
G1
FRONT
G2
Supply Destination
Table 4: Power Supply Destination List
Service Information
G21
Wire Fuse, Relay in the
No. Circuit
24A0 -
24A1 K1A
24A2 F2 (250V, 6.3A), K1B
24A3 F5 (250V, 6.3A), K25
24A6 F7 (250V, 6.3A)
48D3A F13 (250V, 6.3A)
48D3B F14 (250V, 6.3A)
48D3C F15 (250V, 6.3A)
48D3D F16 (250V, 6.3A)
48D3 -
48D -
24G1A F21 (250V, 6.3A)
24G1B F23 (250V, 6.3A)
24G2A F25 (250V, 6.3A)
24G2B F27 (250V, 6.3A)
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SI1705004E-00=SIGMA-G5SII Service Manual
206/273
For Service Engineer
G9
REAR
Fuse, Relay arranged
Locations
-
U27
F2 : On the TB - DC
First Stage
K1B : Inside the U27
board
Inside the U27 board
F7 : On the TB - DC
Second Stage
Inside the U27 board
Inside the U27 board
Inside the U27 board
Inside the U27 board
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Inside the U27 board
Inside the U27 board
Inside the U27 board
Inside the U27 board
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