1.Laser Interlock Mechanism
The position of the switch (S9501) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (S9501) is pressed physically.
Thus, the interlock will no longer function if the switch (S9501)
is released physically and deliberatery .
The interlock also does not function in the test mode ∗.
Laser diode oscillation will continue, if pin 1 of
CXA1821M (IC8101) on the CD ASSY mounted on the
$M Loading Mechanism assembly is connected to GND,
or else the terminals of Q8101 are shorted to each other
(fault condition).
2.When the cover is opened, close viewing of the objective
lens with the naked eye will cause e xposure to a Class
1 laser beam.
∗
: Refer to page 61 on the service manual RRV2328.
2
XR-A390
2. CONTRAST OF MISCELLANEOUS PARTS
NOTES:
CONTRAST T ABLE
XR-A390/DXJN/NC and XR-A4800/MYXJ are constructed the same except for the following :
Ref. No. MarkSymbol and DescriptionXR-A4800XR-A390Remarks
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on product are used for disassembly.
Reference Nos. indicate the pages and Nos. in the service manual for the base model.
When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
560
47k
0.5
1
56 x 10
47 x 103
R50
1R0
1
561
473
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
561
473
R50
1R0
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
P3- 9Rear PadXHA3019XHA3029
P3-10Packing CaseXHD3142XHD3266
P3-11NSPWarranty CardARY7022Not used
P3-13Operating Instructions (English/French)XRE3030Not used
P3-14Operating Instructions (Italian/Dutch/German)XRC3020Not used
P3-15Operating Instructions (Portuguese/Swedish/Spanish)XRC3021Not used
P5- 6Ceramic Capacitor (C1)CKPUYB102K50Not used
P5-15Rear PanelXNC3053XNC3122
P5-17Earth PlateXNG3015Not used
P5-26Tray CapXAK3156XAK3236
P5-30Caution Label HEPRW1233Not used
P5-31Caution LabelVRW1094PRW1018
P5-36NSPGetterXAX3163XAX3263
P5-44BarrierXEC3013XEC3027
COMPLEX ASSYXWM3158AWM7606
PACKING SECTION
Operating Instructions (Thai)Not usedXRC3046
Caution SheetXRH3004Not used
EXTERIOR SECTION
Tray Panel CDNot usedXAK3269For Tray Cap
Rear SheetAED7037Not used
Fuse (FU2, FU3 : T2A)Not usedAEK1057*1
Cushion SpacerXEB3015Not used
Cushion SpacerXEB3016Not used
Cushion SpacerXEB3017Not used
SpacerXEC3014Not used
SpacerXEC3019Not used
Notes : For PCB ASSEMBLIES, Refer to “CONTRAST OF PCB ASSEMBLIES”, “3. SCHEMATIC DIAGRAM” and “4. PCB CONNEC-
TION DIAGRAM”.
The numbers in the remarks column correspond to the numbers on the “ FRONT PANEL ASSY ”.
*1 Refer to “3. SCHEMATIC DIAGRAM”.
*2 Refer to “EXPLODED VIEWS”.
*3 Stick Name Label on the Rear Panel.
4
EXPLODED VIEWS
÷ FRONT PANEL ASSY
XR-A390
12
14
20
23
7
8
3
2
13
27, 29
26
28, 30
13
15
21
9
10
11
5
4
1
18
17
19
16
6
24
25
22
25
÷ FRONT PANEL ASSY PARTS LIST
Mark No. Description Part No.Mark No. Description Part No.