ORDER NO.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
RRV2035
CONTENTS
T ZZK OCT. 1998 Printed in Japan
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................ 3
3. SCHEMATIC DIAGRAM ..................................... 16
4. PCB CONNECTION DIAGRAM .......................... 34
5. PCB PARTS LIST ............................................... 46
6. ADJUSTMENT .................................................... 53
7. GENERAL INFORMATION ............................... 62
7.1 PARTS ......................................................... 62
7.1.1 IC ......................................................... 62
7.1.2 DISPLAY .............................................. 75
7.2 DISASSEMBLY ........................................... 79
7.3 BLOCK DIAGRAM ....................................... 82
8. PANEL FACILITIES AND SPECIFICATIONS .... 84
STEREO CD/VCD CASSETTE DECK RECEIVER
XR-VS77
XR-VS55
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
PREV
NEXT
RETURN
SELECT
XR-VS77
Type
Model
Power Requirement
The Voltage can be converted by
XR-VS77
XR-VS55
the following method.
DBDXJ
AC110-127V/220-230V/240V
With the voltage selector
DLXJ/NC
AC110-127V/220-230V/240V
With the voltage selector
2
XR-VS77, XR-VS55
Printed on the Rear Panel
XR-VS77
/DLXJ/NC
XR-VS55
/DLXJ/NC
LABEL CHECK (For DLXJ/NC type)
Additional Laser Caution
1. Laser Interlock Mechanism
The position of the switch (S8501) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (S8501) is pressed physically.
Thus, the interlock will no longer function if the switch (S8501)
is released physically and deliberatery.
The interlock also does not function in the test mode
.
Laser diode oscillation will continue, if pin 62 of
LA9240ML (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 exposure to a Class
1 laser beam.
: Refer to page 61.
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians ; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 1.3 mW
WAVELENGTH: 790 nm
± 25 nm
3
XR-VS77, XR-VS55
2.1 PACKING
1
FM Antenna
ADH7004
2
Operating Instructions
XRE3019
(English/Chinese/Chinese)
3
AM Loop Antenna
XTB3001
4
Remote Control Unit
XZN3009
(CU-XR051)
5
Battery Cover
AZA7204
NSP
6
Dry Cell Battery (R6P, AA)
VEM-013
7
Catalog Bag
Z21-038
(0.03
× 230 × 340)
8
Front Pad
XHA3003
(1) PACKING PARTS LIST
Mark No.
Description
Part No.
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
· Parts marked by "NSP" and
can not be supplied.
· 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 the product are used for disassembly.
17
VOL
KA
RA
OK
E
SF
C
DISC
DISC
DISC
CLEAR
STATION
REMOTE
CONTROL
UNIT
CU-XR025
MONO
BAND
PGM
RE
PE
AT
RA
ND
O
M
AU
X
P.B
AS
S
DISP
LA
Y
SL
EE
P
POWER
6
1
3
7
8(1/2)
11
16
9(1/2)
15
4
9(2/2)
10
8(2/2)
5
2
13
14
(2) CONTRAST TABLE
XR-VS77/DBDXJ, DLXJ/NC, XR-VS55/DBDXJ and DLXJ/NC are constructed the same except for the following :
9
Rear Pad
XHA3004
10
Packing Case
See Contrast table (2)
11
Packing Sheet
AHG7049
12
· · · · ·
13
Power Cord
See Contrast table (2)
14
Polyethylene Bag
AHG7033
NSP
15
Caution Card
XAX3130
NSP
16
Door Spacer
XHG3002
17
Video Cord
VDE1034
Mark No.
Description
Part No.
k
r
a
M.
o
Nn
o
i
t
p
i
r
c
s
e
D
d
n
a
l
o
b
m
y
S
.
o
N
t
r
a
P
s
k
r
a
m
e
R
7
7
S
V
-
R
X
J
X
D
B
D
/
7
7
S
V
-
R
X
C
N
/
J
X
L
D
/
5
5
S
V
-
R
X
J
X
D
B
D
/
5
5
S
V
-
R
X
C
N
/
J
X
L
D
/
0
1e
s
a
C
g
n
i
k
c
a
P4
5
0
3
D
H
X7
3
0
3
D
H
X6
5
0
3
D
H
X9
3
0
3
D
H
X
3
1d
r
o
C
r
e
w
o
P8
5
1
1
G
D
A4
5
1
1
G
D
A8
5
1
1
G
D
A4
5
1
1
G
D
A
4
XR-VS77, XR-VS55
2.2 EXTERIOR (1/2)
13, 14
3
19
11
9
5
4
6
10
2
12
Note :
Attatch on the same numbers
× three.
12
Refer to
"2.5 $M MECHANISM VCD".
7
20
Note :
Hook Tray cap on top of loading tray and then
insert the bottom three hooks.
8
9
9
21
21
15
18
21
15
1
17
16
9
XR-VS77 only
XR-VS77 only
XR-VS55
only
19
5
XR-VS77, XR-VS55
(1) EXTERIOR (1/2) PARTS LIST
Mark No.
Description
Part No.
(2) CONTRAST TABLE
XR-VS77/DBDXJ, DLXJ/NC, XR-VS55/DBDXJ and DLXJ/NC are constructed the same except for the following :
1
16P F.F.C/30V
XDD3006
NSP
2
$M Mechanism VCD
XXA3007
3
Volume Knob
See Contrast table (2)
4
FL Cover A
See Contrast table (2)
5
FL Cover B
See Contrast table (2)
6
Tray Cap
See Contrast table (2)
7
Display Panel
See Contrast table (2)
8
Bonnet Case
See Contrast table (2)
9
Screw
BPZ30P100FZK
10
Pioneer Badge
AZN3049
11
Screw
VBZ30P080FZK
12
Disc Label
XAX3127
13
Jog Knob Assy
See Contrast table (2)
14
Jog Knob
See Contrast table (2)
15
Screw
BCZ30P060FZK
16
Cord Clamper
See Contrast table (2)
NSP
17
Cord Stopper
See Contrast table (2)
18
Push Rivet
See Contrast table (2)
19
Cushion Rubber
XEB3002
20
Mic Knob
See Contrast table (2)
21
Screw
VBT30P080FZK
k
r
a
M.
o
Nn
o
i
t
p
i
r
c
s
e
D
d
n
a
l
o
b
m
y
S
.
o
N
t
r
a
P
s
k
r
a
m
e
R
7
7
S
V
-
R
X
J
X
D
B
D
/
7
7
S
V
-
R
X
C
N
/
J
X
L
D
/
5
5
S
V
-
R
X
J
X
D
B
D
/
5
5
S
V
-
R
X
C
N
/
J
X
L
D
/
3b
o
n
K
e
m
u
l
o
V5
0
0
3
A
A
X5
0
0
3
A
A
X7
0
0
3
A
A
X7
0
0
3
A
A
X
4A
r
e
v
o
C
L
F6
2
0
3
K
A
X6
2
0
3
K
A
Xd
e
s
u
t
o
Nd
e
s
u
t
o
N
5B
r
e
v
o
C
L
F6
3
0
3
K
A
X6
3
0
3
K
A
Xd
e
s
u
t
o
Nd
e
s
u
t
o
N
6p
a
C
y
a
r
T7
4
0
3
N
Z
X7
4
0
3
N
Z
X8
4
0
3
N
Z
X8
4
0
3
N
Z
X
7l
e
n
a
P
y
a
l
p
s
i
D5
4
0
3
K
A
X5
4
0
3
K
A
X2
5
0
3
K
A
X2
5
0
3
K
A
X
8e
s
a
C
t
e
n
n
o
B9
3
0
3
N
Z
X9
3
0
3
N
Z
X5
4
0
3
N
Z
X5
4
0
3
N
Z
X
3
1y
s
s
A
b
o
n
K
g
o
J4
2
0
3
G
X
X4
2
0
3
G
X
Xd
e
s
u
t
o
Nd
e
s
u
t
o
N
4
1b
o
n
K
g
o
Jd
e
s
u
t
o
Nd
e
s
u
t
o
N9
0
0
3
A
A
X9
0
0
3
A
A
X
6
1r
e
p
m
a
l
C
d
r
o
C4
8
1
-
H
N
R4
8
1
-
H
N
Rd
e
s
u
t
o
Nd
e
s
u
t
o
N
P
S
N7
1r
e
p
p
o
t
S
d
r
o
Cd
e
s
u
t
o
Nd
e
s
u
t
o
N8
2
1
1
F
N
D8
2
1
1
F
N
D
8
1t
e
v
i
R
h
s
u
Pd
e
s
u
t
o
Nd
e
s
u
t
o
N8
3
1
7
C
E
A8
3
1
7
C
E
A
0
2b
o
n
K
c
i
M4
0
0
3
B
A
X4
0
0
3
B
A
X6
0
0
3
B
A
X6
0
0
3
B
A
X