Yamaha PX10 Service Manual page 44

PX10/PX8/PX5/PX3
5-8-6. /DSP-MUTE OFF
Contents Measure the output level in the state where the
/DSP-MUTE signal was negated.
Regarding criteria for measurement, refer to "2-2. inspection"
(Page 54) of MEASUREMENT section.
Advance preparation
Prepare the jig for measuring an output level.
Note
The characteristic of DSP is a fl at.
〈 Service inspection screen 〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around /DSP-MUTE signal.
44
5-9. LCD
5-9-1. Parallel Bus
Contents A parallel bus is automatically inspected by writing,
reading, comparing with the LCDC display data
RAM in the LCD module on the following two
conditions.
Page address
Column address H
Column address L
Data
Advance preparation None.
Note
In order that comparison may use RAM besides a
viewing area, this inspection does not affect display
information.
〈 Service inspection screen 〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Parallel Bus (/LCD-CS1, /LCD-RST, /LCD-RD, /LCD-WR,
LCD-A0 ~ LCD-A7) or the LCD module itself.
（ 1 ） （ 2 ）
2h 5h
8h 8h
3h
0h
AAh
55h