DOWNLOAD Sony HCD-VX550 / MHC-VX550 Service Manual ↓ Size: 8.13 MB | Pages: 82 in PDF or view online for FREE

Model
HCD-VX550 MHC-VX550
Pages
82
Size
8.13 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-vx550-mhc-vx550.pdf
Date

Sony HCD-VX550 / MHC-VX550 Service Manual ▷ View online

9
3-3. FRONT  PANEL  SECTION
3-4. VIDEO  BOARD,  CD  MECHANISM  DECK  SECTION (CDM38LH-5BD36L)
2
screw
(BVTT3 
×
 6)
2
screw
(BVTT3 
×
 6)
4
screw
(BVTT3 
×
 10)
6
front panel section
4
screw
(BVTP3 
×
 10)
5
two screws
(BVTT3 
×
 6)
3
lug
3
two lugs
1
wire (flat type) 
(15 core) (32 cm) (CN303)
1
wire (flat type) (17 core)
(CN304)
1
wire (flat type) 
(23 core) (23 cm) (CN501)
6
screw
(BVTP3 
×
 10)
7
two screws
(BVTP3 
×
 8)
5
chassis
4
screw
(BVTP3 
×
 8)
9
two connectors
(CN392, 393)
2
two screws
(BVTP3 
×
 8)
6
screw
(BVTP3 
×
 10)
8
Remove the CD mechanism 
deck (CDM38LH-5BD36L)
in the direction of arrows
A
 – 
B
.
B
A
1
wire (flat type) 
(15 core) (17 cm) (CN502)
1
wire (flat type) 
(25 core) (18 cm) 
(CN501)
2
screw
(BVTP3 
×
 8)
3
VIDEO 
board
10
3-5. TAPE  MECHANISM  DECK  SECTION (TCM-230AWR2)
3-6. MAIN  BOARD
1
Push the cassette lid.
4
tape mechanism deck section
(TCM-230AWR2)
1
Push the cassette lid.
2
Open two 
cassette lids.
3
two screws
(BVTP2.6 
×
 8)
3
three screws
(BVTP2.6 
×
 8)
5
five screws
(BVTP3 
×
 8)
4
two screws
(BVTP3 
×
 8)
7
connector
(CN403)
3
two screws
(BVTP3 
×
 8)
2
connector 
(CN953) 
2
connector
(CN952) 
6
Remove the MAIN board
in the direction of the arrow.
1
wire (flat type)
(15 core)(15 cm)(CN371)
11
SECTION  4
TEST  MODE
[MC Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Turn the power ON or set to the DEMO mode.
2. Press three buttons of
p  ,  ENTER/NEXT , and 1 /
u
simultaneously.
3. The set is reset, and displays “COLD RESET”, then becomes
DEMO mode.
[MC Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Turn the power ON or set to the DEMO mode.
2. Press three buttons of
p ,  ENTER/NEXT , and  DISC1
simultaneously.
3. The set is reset, and becomes standby state.
[Change-over the AM Tuning Interval]
(EXCEPT Saudi Arabia model)
• The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the
1/
u
button to turn the power ON.
2. Select the function “TUNER”, and press the  TUNER/BAND
button to select the BAND “AM (MW)”.
3. Press the
1/
u
button to turn the power OFF.
4. Press the  ENTER/NEXT  and
1/
u
buttons simultaneously, and
the display on the fluorescent indicator tube changes to “AM 9
k STEP” or “AM 10 k STEP”, and thus the tuning interval is
changed over.
[CD Delivery Mode]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press the
1/
u
button to turn the power ON.
2. Press the  CD LOOP and
1/
u
buttons simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator
tube, and the CD delivery mode is set.
[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]
Procedure:
1. Press three buttons of
p ,  ENTER/NEXT , and  DISC1
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press the  DISC1  button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays
“K 0 J0 V0”. Each time a button is pressed, “K” value increases.
However, once a button is pressed, it is no longer taken into
account.
“J” value increases like 1, 2, 3 ... if turn the JOG dial clockwise,
or it decreases like 0, 9, 8 ... if turn the JOG dial
counterclockwise.
“V” value increases like 1, 2, 3 ... if turn the  VOLUME  dial
clockwise, or it decreases like 0, 9, 8 ... if turn the JOG dial
counterclockwise.
4. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
12
[Aging Mode]
This mode can be used for operation check of tape deck section.
Tape deck section work in parallel.
• If an error occurred:
The aging operation stops and display then status.
• If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Load the tapes into the decks A and B respectively.
2. Press the  FUNCTION  button to select the function “CD”.
3. Press the  PLAY MODE  button to set the “ALL DISCS” mode,
and press the  REPEAT  button to “REPEAT” off.
4. Press three buttons of
p  ,  ENTER/NEXT  , and  DISC SKIP/
EX-CHANGE  simultaneously.
5. The aging mode is activated, if the indicator of disc tray number
on the fluorescent indicator tube is blinking.
6. To exit from the aging mode, press the
1/
u
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 tape deck section alternately.
• If an error occurred, stop display.
2. 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.
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