STEREO DOUBLE CASSETTE DECK
X-W320
SERVICE MANUAL
© 1997-8/B51-5348-00 (K/K) 3486
STEREO DOUBLE CASSETTE DECK X-W320
0
0
8
¶
1
1
¡
DUBBING
NORM.
HIGH
O.T.E.
REC LEVEL
MIN
MAX
POWER
DOLBY NR
CCRS
RESET
REV.
MODE
A
B
2
3
7
¡
2
3
7
- ON OFF
REC
IN
PLAY
OUT
LINE
R
L
SYSTEM
CONTROL
AC 110 -
120V
AC 220 -
240V
Cassette lid ass'y
(A53-2021-08)
Front glass
(B03-3818-08)
Cassette lid ass'y
(A53-2022-08)
AC power cord *
(E30-)
Phono jack
(E11-0369-08)
Slide switch *
(S90-0125-08)
Miniature phone jack
(E11-0188-05)
Power cord bushing
(J42-0336-08)
Panel
(A60-1287-08)
* Refer to parts list page on 16.
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X-W320
2
CONTENTS / ACCESSORIES
Accessories
CONTENTS / ACCESSORIES ....................................2
CIRCUIT DESCRIPTION .............................................3
ADJUSTMENT .............................................................6
PC BOARD ..................................................................7
SCHEMATIC DIAGRAM ..............................................9
EXPLODED VIEW .....................................................14
PATS LIST .................................................................16
SPECIFICATIONS .......................................Back cover
Contents
Audio cord ......................(2)
(E30-0505-05)
System control cord ........(1)
(E30-2733-05)
* AC plug adapter ...........(1)
(E03-0115-05)
Check that the following accessories are present.
* Use to adapt the plug on the
power cord to the shape of the
wall outlet (Accessory only for
regions where use is necessary.)
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CIRCUIT DESCRIPTION
1. Microprocessor
1-1 Microprocessor periphery block diagram
Pin No.
I/O
FUNCTION
KR0
KR1
KR2
KR3
63
FIP23
SB
CW
CCW
64
FIP22
SC
COUNTER B
F.F A
REV A
STOP A
65
FIP21
SD
REW A
REV MODE
DOLBY
FWD A
66
FIP20
SE
COUNTER A
DUBB HIGH
DUBB NOR
CCRS
67
FIP19
SF
O.T.E
PAUSE
RECORD
STOP B
68
FIP18
SG
REW B
F.F B
REV B
FWD B
KEY MATRIX
REC MUTE
LINE MUTE
PLAY B/A
B BIAS
B R/P
DATA
CLOCK
STROBE
DOLBY C/B
DOLBY ON/OFF
LEVEL L
LEVEL R
CLK
STROBE
DATA
RESET
LINE
MUTE
REC
MUTE
SOLB
CPMB
CSPB
B
PACK
R
REC
F
REC
B
CrO2
PHB
B
PLAY
SOLA
CPMA
CSPA
PHA
A
CrO2
A
PLAY
A
PACK
BIAS NOR
BIAS CRO2
PB AMP
TAPE A
TAPE B
DOLBY NR
REC EQ
IC 102
HX-PRO
FL
IC 201
SYSTEM IC
u-COM
IC 101
DRIVER B
DRIVER A
R/P MECHA B
PB MECHA A
KEY
MATRIX
CMAL2Z078A
CMAL2Z077A
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CIRCUIT DESCRIPTION
1-2 Pin description
Pin No.
Pin Name
I/O
Description
Action
1~7
G7~G1
O
FL tube grid signal output (G7~G1)
8
VDD
SUPPLY (+5V)
9
CLK
O
System IC clock output
10
STB
O
System IC strobe signal input
H
11
DATA
O
System IC serial data output
H/L
12
HXPRO
O
HX-PRO bias switching
L : ON
L
13
PLAY B/A
O
B/A Head switching
H : B
H/L
14
DOLBY ON
O
DOLBY ON/OFF
H
15
DOLBY C/B
O
DOLBY C/B
H
16
MPX
O
MPX FILTER OFF/ON
L
17
RST
I
Reset signal input
L
18
CPMA
O
A capstan motor ON
H
19
CPMB
O
B capstan motor ON
H
20
AVss
GND
21
PHA
I
A mecha rotation detection
L
22
PHB
I
B mecha rotation detection
L
23
A PACK
I
A tape detection input
H
24
B PACK
I
B tape detection input
H
25
A CrO2
I
A mecha CrO2 tape detection
H
26
B CrO2
I
B mecha CrO2 tape detection
H
27
LEVEL L
I
CCRS, DPSS Lch signal input
28
LEVEL R
I
CCRS, DPSS Rch signal input
29
AVDD
ANALOG SUPPLY (+5V)
30
AVREF
FOR ADC
31, 32
XT1, XT2
OPEN
33
Vss
GND
34
X1
I
Clock oscillator
35
X2
I
Clock oscillator
36
CSPB
O
B-Capstan motor speed High/Nor
H/L
37
B BIAS
O
B Bias ON/OFF
H : ON
H
38
B Mecha R/P
O
B REC/PLAY switching
H : REC
H
39
F REC
I
A-Fool Proof FWD
L : REC OK
H
40
R REC
I
A-Fool Proof BWD
L : REC OK
H
41
CSP A
O
A-capstan motor speed High/Nor
H/L
42
SOLB
O
B solenoid ON
H
43
SOLA
O
A solenoid ON
H
44
EQ SP
O
45
S DATA
I/O Serial data input output
H/L
46
S BUSY
I/O Serial busy input output
H/L
47
CE
I
System Stop
L
48
IC
Connect to VSS
49
LINE MUTE
O
Line mute control
H
50
REC MUTE
O
Rec mute control
H
51
BIAS NORMAL
O
HX-PRO Bias switching
H : NOR
H
52
VDD
Supply (+5V)
53
B PLAY SW
I
B-Mecha Mode SW
L : PLAY
L
54
A PLAY SW
I
A-Mecha Mode SW
L : PLAY
L
55
EQ 70/120
O
EQ switching
H : 70us
H
56
OTE
O
OTE LED Indicator
L
57~60
KR3~0
I
Key return signal input(KR3~0)
61
70HSP
O
EQ SP HIGH & BIAS 70us
62~70
SA~SI
O
FL tube grid signal output(SA~SI)
71
VLOAD
FL tube driving voltage(-30V)
72~77
SJ~SO
O
FL tube segment signal output
78
IC
O
Supply (+5V) to FL
79,80
G9,G8
O
FL tube grid signal output
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CIRCUIT DESCRIPTION
2. Initialize
When the mechanism made an irregular action, follow the chart below for initializing.
Commence initializing
Complete initializing
Switch ON MTR
(Wait for 1 sec.)
Switch ON
"PLAY" SW
Switch ON
"PLAY" SW
Switch ON SOL
(50 msec.)
Wait for 1 sec.
Switch OFF MTR
No
No
Yes
Yes
3. Test mode
3-1 Setting method
While pressing the STOP key (A DECK), turn the power switch ON.
After turned the power ON, all lights are illuminated for 1.5 seconds and return to normal display with
T indication.
3-2 Cancellation
Turn the power switch OFF.
3-3 Contents of the test mode
1) (4 / 8 / 12) seconds recording.
KEYS
T(SECONDS)
DECK B STOP
7 + DECK B REC ¶
4
DECK B STOP
7 + DECK B PAUSE 8
8
DECK B STOP
7 + DOLBY NR
12
REC
RWD
PLAY
T(SEC)
T
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