Sony MHC-WX5 / MHC-WX7AV / STR-WX5 Service Manual ▷ View online
5
SECTION 3
SERVICE MODE
Connections and Operations When Used Alone
Normally, use the unit connected to the HTC-WX5 as follows.
Basically, when servicing the unit, connect the unit as follows.
Basically, when servicing the unit, connect the unit as follows.
Even when not connected to the HTC-WX5, the unit can operate alone as it mounts a power supply (some functions will however not be
available).
available).
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.
1.
Press three buttons EDIT , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
2.
The fluorescent indicator tube becomes blink instantaneously, and the set is reset.
CD Delivery Mode (This mode can be used only when the HTC-WX5 is connected.)
• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1.
Procedure:
1.
Press
1/u button to turn the set ON.
2.
Press LOOP button and
1/u button simultaneously.
3.
A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.
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.
1.
Press three buttons REPEAT , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
2.
The fluorescent indicator tube becomes blink instantaneously, and the set is reset.
Sled Servo Mode (This mode can be used only when the HTC-WX5 is connected.)
• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.
Procedure:
1.
Procedure:
1.
Select the function “CD”.
2.
Press three buttons FLASH , ENTER/NEXT , and KARAOKE PON/MIX simultaneously.
3.
The Sled Servo mode is selected, if “CD” is blinking on the fluorescent indicator tube.
4.
With the CD in stop status, press
) + button move the pick-up to outside track, or – 0 button to inside track.
5.
To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Press three buttons in the same manner as step 2.
2) Press three buttons in the same manner as step 2.
Note:
• Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be chipped.
• Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be chipped.
Change-over of FUNCTION Name
• The FUNCTION name of external input terminal can be changed over to VIDEO 1 or MD. With the FUNCTION selected to “MD”, about
5dB mute is applied to the input gain.
Procedure:
1.
1.
Press
1/u button to turn the set OFF.
2.
Press
1/u button together with FUNCTION button, and the power is turned on, the display of fluorescent indicator tube changes to
“MD” or “VIDEO 1” instantaneously, and thus the FUNCTION is changed over.
Change-over of AM Tuner Step between 9kHz and 10kHz
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1.
Procedure:
1.
Press
1/u button to turn the set ON.
2.
Select the function “TUNER”, and press TUNER BAND button to select the BAND “MW”.
3.
Press
1/u button to turn the set OFF.
4.
Press ENTER/NEXT and
1/u buttons simultaneously, and the display of fluorescent indicator tube changes to “MW step 10” or
“MW step 9”, and thus the channel step is changed over.
AC IN
UNIT
HTC-WX5
SYSTEM CONTROL 17P
6
LED and Fluorescent Indicator Tube All Lit, Key Check Mode (Do not connect the HTC-WX5.)
Procedure:
1.
1.
Press
1/u button to turn the set ON.
2.
Press the OPEN/CLOSE button to open the sliding panel.
3.
Press three buttons DSP DELAY , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
4.
LEDs and fluorescent indicator tube are all turned on. Each time the MOVIE button is pressed, the fluorescent indicator tube lights up
as follows:
lights up completely
as follows:
lights up completely
n lights up partially 1 n lights up partially 2 n lights up completely.
5.
Press GAME button, and the key check mode is activated.
6.
In the key check mode, the fluorescent indicator tube displays “K @@ J0 V0”. Each time a button is pressed, “K”value decreases.
However, once a button is pressed, it is no longer taken into account. (@@ means the total of buttons)
“J” Value increases like 1, 2, 3 ... if rotating JOG knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
However, once a button is pressed, it is no longer taken into account. (@@ means the total of buttons)
“J” Value increases like 1, 2, 3 ... if rotating JOG knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
7.
Pressing all buttons lights up the fluorescent indicator tube completely.
8.
To exit from this mode, press three buttons EDIT , ENTER/NEXT and DISPLAY/DEMO simultaneously. (COLD RESET)
9.
To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.
CD, TAPE Deck Aging Mode (This mode can be used only when the HTC-WX5 is connected.)
This mode can be used for checking the operations of the CD player and tape deck.
• When problems occur;
• When problems occur;
Aging stops, and the stopped state is displayed on the fluorescent indicator tube.
• When no problems;
Aging continues.
Preparations:
• Set the CD on the DISC1 tray.
• Insert a commercially available tape for recording (tapes which contents can be erased, etc.) in decks A and B.
• Set the CD on the DISC1 tray.
• Insert a commercially available tape for recording (tapes which contents can be erased, etc.) in decks A and B.
Setting the aging mode:
Press the PLAY MODE button, ENTER/NEXT button, and STEREO/MONO button together.
When the aging mode is set, the CD roulette mark blinks. To exit the mode, press the
When the aging mode is set, the CD roulette mark blinks. To exit the mode, press the
1/u button and turn OFF the power.
Sequence:
The aging mode is executed in the following sequence.
If the function is set to “CD” when the aging mode is set, aging is performed starting from the CD player. When set to “TAPE A” or “TAPE
B”, aging is started from deck A.
If the function is set to others, aging will not be started until the function is switched to CD or TAPE.
If the function is set to “CD” when the aging mode is set, aging is performed starting from the CD player. When set to “TAPE A” or “TAPE
B”, aging is started from deck A.
If the function is set to others, aging will not be started until the function is switched to CD or TAPE.
Display of status:
• The aging status is displayed on the fluorescent indicator tube.
• Normally, the CD player displays the remaining aging time. But if operations ended abnormally, it displays the cause.
• During the aging of the tape deck, the operations performed will be displayed. If operations ended abnormally, this will be displayed at the
• Normally, the CD player displays the remaining aging time. But if operations ended abnormally, it displays the cause.
• During the aging of the tape deck, the operations performed will be displayed. If operations ended abnormally, this will be displayed at the
fluorescent display tube.
CD Player
• During normal operations:
Display of fluorescent indicator tube
**1-@@
**: Displays “CD” and the remaining aging time (minutes) alternately. The remaining aging time is counted down from 12.
@@: Track number being accessed.
Aging of CD player (12 minutes)
Aging of deck A
Aging of deck B
10 minutes
(half)
7
• When operations end abnormally:
Display of fluorescent display tube
Display of Operations
TAPE A AG-1
TAPE A AG-2
TAPE A AG-3
TAPE A AG-4
TAPE A AG-5
TAPE B AG-1
TAPE B AG-2
TAPE B AG-3
TAPE B AG-4
TAPE B AG-5
Operations during aging
• Operations are performed in the following sequence during aging.
<CD player>
1.
The CD tray rotates and disc 1 is selected.
2.
Chucking is performed.
3.
TOC is read.
4.
Track 1 played back for 2 seconds.
5.
The last track is played back for 2 seconds.
6.
1 to 5 is repeated.
7.
After 12 minutes of aging, aging is switched to the tape deck.
<Tape Deck>
1.
The tape in deck A and B are rewound to the head at the same time.
2.
The FWD side is played back for 100 seconds.
3.
The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20
seconds.
seconds.
4.
The REV side is played back for 100 seconds.
5.
The tape is rewound to the head (REW).
6.
The FWD side is played back for 100 seconds.
7.
The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20
seconds.
seconds.
8.
The REV side is played back for 100 seconds.
9.
The tape is rewound to the head (REW).
10. The tape in deck A is rewound to the head.
11. The FWD side is played back for 100 seconds.
12. The tape is fast forwarded (FF) for 20 seconds.
11. The FWD side is played back for 100 seconds.
12. The tape is fast forwarded (FF) for 20 seconds.
The following procedure is performed when the end is reached before the 20 seconds.
13. Aging is switched to the CD player.
Display
NO DISC ERR
FOCUS1 ERR
FOCUS2 ERR
GFS ERR
FBIAS ERR
SENSOR ERR
TABLE ERR
TRAY ERR
Main Cause
DISC 1 is NO DISC from the beginning
Focus is not imposed properly
The focus deviated several times after the disc rotated normally
GFS ERROR
Error during focus bias adjustment
DISC 1 was found to be NO DISC by the disc sensor
The table did not rotate normally
The tray containing the BD did not operate normally
Tape Deck
Operation
TAPE A, B REW
TAPE A FWD
TAPE A FF
TAPE A REV
TAPE A REW
TAPE B REW
TAPE B FWD
TAPE B FF
TAPE B REV
TAPE B REW
Timing of Ending
Shutoff
100 seconds playback
20 seconds or shutoff
100 seconds playback
Shutoff
Shutoff
100 seconds playback
20 seconds or shutoff
100 seconds playback
Shutoff
8
PANEL Aging Mode
This mode is used for opening and closing the sliding panel continuously.
Setting the aging mode :
With the set at standby condition, press FLASH button, ENTER/NEXT button and STEREO/MONO button together.
The aging will start and sliding panel will follow aging sequence as described below.
The aging will start and sliding panel will follow aging sequence as described below.
• When problems occur ;
Aging stops and “AGING ERROR” is displayed on the fluorescent indicator tube.
• When no problems;
Aging is carried out repeatedly. After 65000 times, “AGING STOP” is displayed and aging stops.
Aging Sequence
Counts up
n
n
Panel open
Panel close
n
Stops for one second in the opened state
Stops for one second in the closed state
Each time the DISPLAY/DEMO button is pressed, the display switches as follows.
AGING @@@@@ (No. of agings carried out)
OP MAX @.@@ (Maximum time taken for OPEN:In seconds)
OP MIN @.@@ (Minimum time taken for OPEN:In seconds)
CL MAX @.@@ (Maximum time taken for CLOSE:In seconds)
CL MIN @.@@ (Minimum time taken for CLOSE:In seconds)
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