Hitachi RAS-10HRNM, Service Manual, Page: 401 / 482

N O T E
• Identify the terminal numbers with mark band. When reassembling, the terminals have to be connected to the
correct numbers . If incorrectly connected, malfunctions or damages will occur.
• Check to ensure that the electrical wires will not be caught between the assembled electrical components and
the mounting plates when the PCB2 is reassembled.
¿
Removing diode module and transistor module
Check to ensure that the LED201 (Red) of the PCB2 is off.
Diode Module PCB2 and transistor module
1
2 2
8 9 1
5
2
1
10
3
4
5
6
7
5
2
1
1. 5 Screws (M5).
2. Fixing screw (M5).
1. Screws for PCB2 (M3)
2. Screw (M5)
3. Fixing screws for transistor module (M4)
4. Led201
5. Screws for PCB (M3)
6. CN207
7.CN026
8. CN2
1 Disconnect all the wirings connected to the diode module as shown below.
•
Disconnect the wirings of the ter, - , U, V, W on the diode module.
• Remove the two (2) screws fixing the diode module.
• Remove the diode module from the electrical box.
2 Disconnect all the wirings connected to the transistor module as shown below.
•
Disconnect the wirings of connector CN2, CN206 and CN207.
• Disconnect the wirings from P, N, U, V, W on the transistor module.
• Remove the three (3) screws fixing the PCB2 and then remove the PCB2 from the transistor module.
• Remove the four (4) fixing screws on the transistor module.
• Remove the transistor module from the electrical box.
N O T E
• The correct position of the marks on the PCB2 is upside down when being assembled.
• Identify the terminal Nos. with the mark band Nos. when reassembling. If incorrectly connected, malfunction
or damage will occur.
• Check to ensure that the electrical wires will not be caught between the mounting electrical components and
the mounting plates when the PCB2 is remounted.
• Apply silicon grease evenly on the whole rear side of the diode module and the transistor module when
mounting. Silicon grease is available as a field-supplied accessory.
10 Servicing
393
SMGB0060 rev. 1- 12/2010
10