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CIRCUIT DESCRIPTION
1. TEST MODE
* Setting the test mode
The microprocessor built in the unit can be put to
TEST MODE by just short-circuiting the TEST pin #5
oe
_ and #6 when set to power ON.
DP-R792/R892/R4440 is available to set to each test
mode by UP key or DOWN
key as follows.
1-1.
Key and functions vaild in test mode
STEP
Description
1
STOP MODE after setting TEST MODE
TRACK
:
|
Li
|
2
Turn Rotary-tray with opening it, and shows time of tray-open.
TRACK NO.
aie
uc
3
Turn Rotary-tray with closing it, and shows time of tray-close.
TRACK NO.
mt 2
|
a
|
4
(1) FOCUS SORNVO: ciccecebevcds Sivivcecliscsciescasatenssdectorabaceseccstec ON.
TRACK NO.
(2) Tracking servo
met
(3) FECA SOMNVO: eeccecesscctiva devsncnetaveevaneioandeas lonsiovsaseniussens
Lio
1
& Time lights
5
CU) STACKING sctarivcsscsteicaede Bata
deladeaine OFF.
TRACK NO.
(2) Focus servo
mac
(3) Tracking SOPVO .......eesesssseessesecsesseeseecerssnesrenerenee OFF.
LI
(4) Feed S€rV0 w...escsscseesseees t d s taanesstenrasitaknhassieseshiat OFF.
Ui lights
6
Same step "4".
TRACK NO.
mt
"tt
L
> time lights
L-—_}-—
,
——_
7
Confirm position of start limit switch, shows time of setting it to on.
TRACK NO.
flog
ee
|
_—
8
| Set it to program mode, playback Tracking No. 7, 8 and 6 (High-speed).
=
ee!
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