Hitachi HTA-DD1E Service Manual page 6

3. Removal of Tuner/DSP/Video/Digital PWB Board
(a)Remove the Flat cable Z at the Tuner PWB.
(b)Gently pull the Tuner/DSP/Video PWB Board upwards to detach 8 connectors from Main PWB Board.
(c)Detach the connector from DSP PWB Board to remove the Digital PWB.
4. Removal of Heat Sink and Transformer
(a)Invert the Bottom Chassis, remove 2 screws 5 connect to the heat sink. (Fig. 5)
(b)Remove 4 screws 6 and pull the transformer upward together with the Power PWB section.
5. Removal of Power PWB Board
(a)Remove 1 screw 7 from the Bottom Chassis at the side.
(b)Release board from its 3 holding claws (PWB SUPPORT) and gently pull the board free.
6. Removal of Main PWB Board
(a)Detach Flat cable from FL PWB Board.
(b)Remove 6 screws 8 to release the transistors from the heat sink.
(c)Remove 3 screws 9 to release the bracket from the heat sink.
(d)Remove 1 screw ! to release the main PWB from the Bottom Chassis.
8
8
7. Removal of Surround PWB
(a)Remove 5 screws ~ to release surround PWB from the heat sink.
Connectors x 8
Z
Flat cable
Tuner PWB
Flat Cable x 1
x 6
10
x 1
Digital PWB
Video PWB
DSP PWB
Fig. 3
x 4
6
9
Fig. 4
x 5
18
x 1
7
x 3
Claws (PWB Support)
x 1
7