Sony HP-210 - Pilot Lamp

2-9. PILOT LAMP REPLACEMENT
Prepare for replacing any of the pilot lamps
by removing the record changer as described in
Procedure 2-4.
Stereo Lamp
1. Pull the lamp from its rubber holder.
2. Unsolder the defective lamp leads from the
connecting terminals on the tuner board, and
then install the new lamp.
Dial Lamp
1. Remove the front panel as described in
Procedure 2-5.
2. Pry out the defective lamp, and then install
the new one.
2-10. CONTROL AND SWITCH REPLACEMENT
Prepare for replacing any of the controls or
switches by removing the front panel as described
in Procedure 2-5. :
TONE Controls
1.
Remove the hex nuts that secure the BASS and
TREBLE controls to the front subchassis as
shown in Fig. 2-17.
Cut the two lead wires connecting between the
tone control board and preamplifier board.
Carefully remove them along with the tone
control circuit board.
Cut each lug of the defective control on the
board to remove the part.
VOLUME
control
SPEAKER
Sw
HEADPHONE SW
jack
Fig. 2-17.
control
5.
6.
Unsolder and remove the clipped lugs, and
clean out the holes in the circuit board.
Install the replacement control.
FUNCTION Switch (slide/rotary switch)
1,
TREBLE
control
GS
Remove the hex nut sécuring it to the front
subchassis as shown in Fig. 2-17.
Cut the two lead wires connecting between
preamplifier board and tone control board as
shown in Fig. 2-18.
Remove the lead wires from the clamp/PCB
support one by one and then unhook the fiber
support as shown in Fig. 2-18. This frees
the preamplifier board.
With a soldering iron having a solder-sucking
tip, clean the solder from each lug of the
defective switch and the printed board.
Install the replacement switch.
Fig. 2-18. Preamplifier board removal
self-tapping screw
@®B 3x6
FUNCTION
Sw
Control and switch replacement