DS60-112
B.Amplifier Unit
6.MAIN circuit board 1/4
6-1. Remove the amplifier unit (See Item 4 above.)
6-2. Remove the four (4) screws marked [30], four (4) knobs of Rotary variable resisters, four (4) hexagonal nuts and one (1) each of INPUT and SLAVE OUT hexagonal nuts.The MAIN circuit board 1/4 can then be removed. (Fig. 3)
7.MAIN Circuit Boards 2/4, 3/4, 4/4
7-1. Remove the amplifier unit. (See Item 4 above.)
7-2. Remove the one (1) screw marked [210] from each circuit board, which can then be removed. (Fig. 3)
8.Power Transformer
8-1. Remove the amplifier unit. (See Item 4 above.)
8-2. Remove the four (4) screws marked [190A]. The power transformer can then be removed. (Fig. 3)
9.Heat Sink
9-1. Remove the amplifier unit. (See Item 4 above.)
9-2. Remove MAIN circuit boards 2/4, 3/4 and 4/4. (See Item 7 above)
9-3. Remove the three (3) screws marked [190B]. The heat sink can then be removed. (Fig. 3)
[190B] | [210] | [190B] | [210] | [190B] | [210] | [190A] |
MAIN 2/4 | | MAIN 4/4 | | |
MAIN 3/4 | | | |
| | | |
[30] | [30] | [30] | | |
| MAIN 1/4 | [190A] | [190A] | [30] |
| | |
| | | |
Hexagonal nut | INPUT | SLAVE OUT | Hexagonal nut |
| | Knob | |
Fig.3 | [30]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) |
| | [190]: Bind Head Tapping Screw-C 4.0X8 MFZN2BL (VC688900) |
[210]: Bind Head Screw SP3.0X12 MFZN2Y (VB763800)
IC BLOCK DIAGRAM
RC4558D-V (IG001390)
IC1, IC2
OP AMP
Output A | 1 | | | | |
Inverting | 2 | | | | |
Input A | | | - | | |
Non-Inverting | 3 | | | | |
| | | |
Input A | | | | |
| | | | |
-DC Voltage Supply | 4 | -V |
+DC Voltage
+V 8 Supply
| | 7 | Output B |
| + - | 6 | Inverting |
| Input B |
| |
5Non-Inverting Input B
