Reference Material; Structure; Precautions In Disassembly And Reassembly; Disassembly - Hitachi UC 18SD Technical Data And Service Manual

7. REFERENCE MATERIAL

7-1. Structure

(1) The outer casing consists of Case (A) and Case (B). A light bar for the Pilot Lamp is built into Case (A).
(2) Electronic components which provide rapid charging and prevent overcharging are mounted on the Printed
Circuit Board.
Case (A).(B) Set

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The [Bold] numbers in the descriptions below correspond to the item numbers in the parts list and exploded
assembly diagram.

8-1. Disassembly

(1) Remove the four Screws (Plastic Tie) D4 x 20 [5], and take off Case (B).
(2) When the Transformer 120V [9] is lifted upward, the Printed Circuit Board Ass'y [4] and the Cord [10] can be
removed together.
(3) To separate the Printed Circuit Board Ass'y [4], Transformer 120V [9] and Cord [10] melt their soldered
connections with a soldering iron at the points marked 1, 2, 3, 4 and 5 in Fig. 3. As excessive heat may
damage the material of the Printed Circuit Board, use of the soldering iron should be limited to less than three
seconds at one time.
Printed Circuit Board Ass'y
Light Bar
Case (A)
Case (B)
Printed Circuit Board
Fig. 2
Lead Wire
(A different colored)
Transformer 120V
Lead Wire (The same colors)
Fig. 3
--- 5 ---
Transformer
Cord
Cord