Test Mode - Technics SX-PX201 Service Manual

No. PCB TEST MODE Procedure
4 MAIN Wave ROM (IC7) check 1. Press and hold the two E keys shown below, and then turn on the
power switch.
2. Select the GRAND PIANO sound.
E keys
When set to the self-diagnostic mode, the Wave ROM outputs a sine wave. If no sound is produced, or
if the sound is distorted, the Wave ROM is defective.
5 cP Control Panel LED check Press and hold the two.F keys shown below, and then turn on the power
switch.
i l
Press the buttons on the control pane! and confirm that the corresponding LEDs light.
6 MKB Keyboard ROM (iC2) check Press and hold the two B keys shown below, and then turn on the:
power switch.
tt
B keys
If the keyboard ROM (IC2) is OK, one confirming beep will sound. If it is defective, several consecutive error
beeps will sound.
Bi Connection between serving CHECKING DEVICE and MAIN P.C.B.
CHECKING DEVICE
CIRCUIT
6 CN6 ' 6 CNS :
Weoddgeccoeene Eevee dddeecaccwa
Rea
4F
cr
32