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Model
MHC-NX1 MHC-NX3AV STR-NX1 STR-NX3
Pages
42
Size
4.36 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / S/M STR-NX1/NX3 US CAN AEP UK
File
mhc-nx1-mhc-nx3av-str-nx1-str-nx3.pdf
Date

Sony MHC-NX1 / MHC-NX3AV / STR-NX1 / STR-NX3 Service Manual ▷ View online

9
[Aging Mode]
• Execute only if connected to the HTC-NX1.
This mode can be used for operation check of CD section and tape
deck section.
CD section and tape deck section work in parallel.
• If an error occurred:
The aging operation stops only an error occurred sections and
display then status.
• If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Set disc in DISC5 tray.
2. Load the tapes into the decks A and B respectively.
3. Press the 
[PLAY MODE]
 button to set the “ALL DISCS” mode,
and press the 
[REPEAT]
 button to “REPEAT” off.
4. Press the 
[CD]
 button to select the function “CD”.
5. Press three buttons of 
[ENTER]
 , 
[POWER SAVE/DEMO]
 ,
and 
[TUNER BAND]
 simultaneously.
6. The aging mode is activated, if the indicator of disc tray num-
ber on the liquid crystal display is blinking.
7. To release from the aging mode, press the
?
/
1
button to turn
the power OFF and operate the cold reset. (Refer to the “MC
Cold Reset”)
1. Display at the Aging Mode
• Display operating state of CD section and tape deck section al-
ternately.
• If an error occurred, stop display which that section.
2. CD Section
• Display at the aging mode is the same as the normal operation.
• The sequence during the aging mode is following as below.
Aging mode sequence (CD section) :
Open the disc1 tray
Disc5 chucking
Disc5 TOC read
Disc5 play track1 for 2 seconds
Disc5 play last track for 2 seconds
• Display at an error occurred
1) Display of the error count
(1)
Press three buttons of 
[ENTER]
 , 
[POWER SAVE/DEMO]
 ,
and 
[GROOVE]
 simultaneously.
(2)
Display of the error count following as below.
Display
EMC
**
EDC
**
Notes:
EMC
**
: The number of mechanical error.
EDC
**
: The number of no disc error after chucking the disc.
2) Display of mechanical error
Display
E
**
M##$$&&
Notes:
**
: The number of mechanical error.(“00” is latest one)
(Press the 
[PLAY MODE]
 button to changes next error display)
## : Not used.
$$ : Loading error. (Second figure is not used)
D : The error in the midst of close at the except mechanical trouble.
E : The error in the midst of open at the except mechanical trouble.
C : The error in the midst of chuck up at the except mechanical
trouble.
F : The error in the midst of EX-open at the except mechanical
trouble.
&&: Loading error. (Second figure in not used)
1: The error in the midst of chuck up.
2: The error in the midst of chuck down.
3: Time up of EX-open
4: Time up of EX-close.
3) Display of no disc error
Display
E
**
D##$$&&
Notes:
**
: The number of mechanical error.(“00” is latest one)
(Press the 
[REPEAT]
 button to changes next error display)
##:
01: Focus error
02: GFS error
03: Set up error
$$:
00: No disc error when does not chucking retry.
02: No disc error when chucking retry to completion.
&&: The state when judged no disc error. (Second figure is not used)
1: Stop
2: Set up
3: TOC read
4: Access
5: Play
6: Pause
7: Manual search (Play)
8: Manual search (Pause)
3. Tape Deck Section
10
3. Tape Deck Section
• The sequence during the aging mode is following as below.
• If an error occurred, stop display that step.
Aging mode sequence (Tape deck section) :
Rewind the tape A and B
“TAPE A AG-1”
Shut off
FWD play the tape A
“TAPE A AG-2”
2 minutes
Fast forward the tape A
“TAPE A AG-3”
Shut off or 20 seconds
REV play the tape A
“TAPE A AG-4”
2 minutes
Rewind the tape A
“TAPE A AG-5”
Shut off
FWD play the tape B
“TAPE B AG-2”
2 minutes
Fast forward the tape B
“TAPE B AG-3”
Shut off or 20 seconds
REV play the tape B
“TAPE A AG-4”
2 minutes
Rewind the tape B
“TAPE B AG-5”
Shut off
Note:
 “TAPE 
*
 AG-
*
” is display of each step.
11
11
SECTION  5
DIAGRAMS
5-1.
NOTE  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS
Note on Printed Wiring Board:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
x
: parts mounted on the conductor side.
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated)
• Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
2
: nonflammable resistor.
5
: fusible resistor.
C
: panel designation.
U
: B+ Line.
V
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM)
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM)
E
: TAPE PLAYBACK
G
: RECORD
J
: CD PLAY
N
: MIC INPUT
• Abbreviation
AUS
: Australian model
CND : Canadian model
JE
: Tourist model
KR
: Korean model
Note:
The components identi-
fied by mark 
0
 or dotted
line with mark 
0
 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
• IC Block Diagram
– MAIN Board –
IC401
BA3830F
• Waveforms
– MAIN Board –
1
IC501 
q;
 (XCIN)
2
IC501 
qd
 (XOUT)
F01
R02
R01
LINE NF
LINE IN
REFERENCE
CURRENT
REFERENCE
CURRENT
RESET
BAND
PASS
FILTER
DET
17
RESET
18
F02
16
F03
15
F04
14
F05
13
F06
12
REC LEVEL
11
VCC
10
4
3
2
1
+
REC NF
REC IN
6
RESET C
7
BIAS C
8
GND
9
5
+
1.4 Vp-p
32.768 kHz
3 Vp-p
16 MHz
• Circuit Boards Location
SUB TRANS board
(US, Canadian, AEP, UK)
TRANS board
BACK LIGHT board
PANEL baord
R board
PA board 
MAIN board
SURROUND AMP board
(NX3)
TUNER pack
MY
: Malaysia model
SP
: Singapore model
TH
: Thai model
12
12
STR-NX1/NX3
5-2.
SCHEMATIC  DIAGRAM  – MAIN Board (1/3) –
(Page 13)
(Page
 14)
(Page
 17)
(Page
 19)
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