Yamaha GX-505, Руководство по обслуживанию

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GX-505/GX-505VCD
GX-505/VCD
The CD TEST MODE is enabled. Each button operates as follows for each mode. The MODE No. is increased by
pushing
"
+10
"
button.
Button
" 0 "
" 1 "
" 2 "
" 3 "
" 4 "
" 5 "
" 6 "
" 7 "
" 8 "
" 9 "
Button
" 0 "
" 1 "
" 2 "
" 3 "
" 4 "
" 5 "
" 6 "
" 7 "
" 8 "
" 9 "
MODE 4 MODE 5 (GX-505VCD only)
Feed forward (outer direction) CD-ROM module load
Feed backward (inner direction) CD-G module load
Rotate the disc motor Decoder play command
Retard the disc motor Decoder pause command
port TBLL
←
Low, Decoder abort command
port TBLR
←
High
port TSLW High/Low alternate Decoder soft reset
Tray port control (open/close) Decoder hard reset
Line mute on/off —
— —
Jump to Test mode 1 —
MODE 1 MODE 2 MODE 3
Open/close the tray Focus search Cancel adjust pass *2
Clamp up/down Play (PLL) Auto adjustment mode 1 *1
Tracking Offset, Focus Offset,
Focus Gain
DISC change Play (without PLL) Auto adjustment mode 2 *1
Tracking Balance, Tracking Gain
Mechanism home process Focus on, Tracking off, Feed off Auto adjustment mode 3 *1
Focus Gain, Tracking Gain,
Focus Balance
Jump to test mode 4 +10 track kick Read and display the servo
coefficient
Tray close, Clamp down –10 track kick Displayed servo coefficient
address up
— +1 track kick Displayed servo coefficient
address down
Enter normal operation –1 track kick Displayed servo coefficient
(without mecha. INIT.) increment
Enter normal operation +30 track kick Displayed servo coefficient
decrement
Start TEST REPEAT –30 track kick Send the displayed servo
(Do not use this function as coefficient *2
it is not for servicing.)
*1 “ A d j - ” l i g h t s d u r i n g t h e
adjustment and disappears at
the end of the adjustment.
*2 When the mode is reset to the
normal operating mode after the
servo coefficients are reset by
this operation, auto adjustment
is not available unless the auto
adjustment pass function is
cancelled.
Open/close the tray
Clamp up/down
Controls for the tray, the disc table and clamping stop. STANDBY command for the servo system.
Play (PLL)
Feed forward (outer direction)
Feed backward (inner direction)
Tray close, clamper down
OPEN/CLOSE
DISC CHANGE
a (STOP)
w
/
d
(PLAY/PAUSE)
y
t
DISC 1
The following button functions are not changed in the test mode No.
[VCD Module condition check]
If the VCD module is in a good condition, the blue background appears on the monitor screen when in the CD test mode.
If the blue background does not appear, the possibility is that the VCD module has failed.
NOTE: None of the components of the VCD module can be supplied separately. Only a VCD module unit (VZ150200) is available.
When the CD TEST MODE is set through the SYSTEM TEST MODE, “00 TM1 00: 00” appears on the FL display.
■
CD TEST MODE
17