Yamaha CLAVINOVA CLP-120 Service Manual page 33

I INSPECTION
1. Preparation
• To check the unit, following mesuring instruments are required.
Level meter (JIS-C filter)
Frequency counter
• Set each control as follows.
MASTER VOLUME: MAX
BRILLIANCE: CENTER
Voice: GRAND PIANO 1
PEDAL: OFF
REVERB: OFF
SPEAKER ON/OFF switch: NORMAL
AUX IN, AUX OUT: Connect a load resistance to all terminals. (Load resistance for AUX OUT is 10kΩ)
HEADPHONE: Connect a load resistance (33Ω) to either terminal.
2. Entering the Test Program
Turn on the power with C2# , F2 , G2# keys pressed and held. (Fig.1)
The test program will run and the 7segment LED will indicate 'TST'. (Fig.2)
3. Proceeding the Test
See the Table 1 for the test items.
(1) Press TEMPO/FUNCTION# [M] or [L] button to select a test item.
(2) Press SONG [START/STOP] button to execute the current test.
(3) After executing the current test, press SONG [START/STOP] button to return to the wait state.
(4) If the test result is NG, press [DEMO] button to return to the wait state.
(Fig.1)
(Fig.2)
CLP-120
33