Yamaha PSR-S710 Service Manual page 66

PSR-S710/PSR-S910
Test No. LCD display
59 059 : Wave ROM Check2
OK:
059 : Wave ROM Check2
OK
NG:
059 : Wave ROM Check2
Wave1 (IC *** , *** ) NG
Wave2 (IC *** , *** ) NG
*** : Location Number of IC
60 060 : Effect RAM Check2
OK:
060 : Effect RAM Check2
OK
NG:
060 : Effect RAM Check2
TG1 (IC *** ) NG
*** : Location Number of IC
61 061 : Panel PCB Check1
62 062 : Panel PCB Check2
63 063 : Panel PCB Check3
67 067 : Factory Set
68 068 : Test Exit
• Other Tests
AUX IN
Check that the output is as shown in the following table when signals are input to the AUX IN.
INPUT
AUX IN L/L+R: Sine wave (1 kHz, + 12 dBu)
R: No input
AUX IN L/L+R: No input
R: Sine wave (1 kHz, + 12 dBu)
Popping Noise Check
Connect the oscilloscope to the L/R of the [PHONES] jack (33 Ω load) and turn on and then off the [STANDBY/ON] switch.
Make sure that popping noise level is 1.0 Vp-p or less, and that no abnormal sound or popping noise is output from the speak-
ers.
66
Test descriptions, judging conditions, etc.
Checking the WAVE ROM connected to the TG bus. (Complete check)
Check that "Wave ROM Check2 OK" is displayed on the LCD.
It will take about 58 seconds on PSR-S710 or about 78 seconds on PSR-S910 for the check.
Case PSR-S710
Wave1 (IC302, 309) NG
Checking the Effect RAM connected to the TG bus. (Complete check)
Check that "Effect RAM Check2 OK" is displayed on LCD.
It will take about 50 seconds on PSR-S710 or about 33 seconds on PSR-S910 for the check.
Case PSR-S710
TG1 (IC305) NG
Test for factory inspection.
Test for factory inspection.
Test for factory inspection.
If the Factory Set is executed, Internet setup will be lost.
Initializing the entire data to reset to the initial factory setup.
* Only the fl ag for initialization is raised in this stage and the actual initialization will be executed when
the power is turned on the next time.
After executing this Factory Set, make sure to execute the test No. 68 "Test Exit".
Do not turn off the power until the main screen is indicated after turning on the power the
next time.
This will leave the test program and change to the play mode.
Do not turn off the power until the main screen is indicated after executing the Test Exit.
OUTPUT (10 kΩ load)
OUTPUT
L/L+R
+8.0 ± 2 dBu
-42.5 dBu or less
Case PSR-S910
Wave1 (IC301, 302, 308, 309) NG
Case PSR-S910
TG1 (IC306) NG
PHONES (33 Ω load)
R L
-42.5 dBu or less -3.7 ± 2 dBu
+8.0 ± 2 dBu -39.0 dBu or less
R
-39.0 dBu or less
-3.7 ± 2 dBu