Sharp CD-E250 (serv.man20) Service Manual ▷ View online
– 13 –
CD-E250E
CD-E550E
4. Step 4 Mode
The CLV servo ON command (8600) is transmitted to
wait for the following buttons to be pressed. (The disc is
rotated for CLV lock.)
wait for the following buttons to be pressed. (The disc is
rotated for CLV lock.)
The time display always indicates "0:00".
Press the following buttons in this state to obtain the
operations specified below.
"ON/STAND BY" ..... Test mode and power turned off to
operations specified below.
"ON/STAND BY" ..... Test mode and power turned off to
shift to the ordinary standby mode.
"FF/FWD" ................ The pickup slides toward the outer
periphery while this button is pressed.
"REW/REV" ............. The pickup slides toward the inner
periphery while this button is pressed.
If PICKUP IN is on, input is invalid.
If PICKUP IN is on, input is invalid.
"MEMORY/SET" ...... Return to step 5
*If the focus is not received, the process returns to step 1.
5. Step 5 Mode
When the CD initialization operation flow is completed,
the mute is turned off, and playback is started. Even if
playback reaches the outermost periphery of disc, the
operation does not stop. The LCD display indicates the
playback passage time as in case of ordinary CD
playback.
the mute is turned off, and playback is started. Even if
playback reaches the outermost periphery of disc, the
operation does not stop. The LCD display indicates the
playback passage time as in case of ordinary CD
playback.
Press the following buttons in this state to obtain the
operations specified below.
operations specified below.
"ON/STAND BY" ...... Test mode and power turned off to
shift to the ordinary standby mode.
"FF/FWD" ................. The pickup slides toward the outer
periphery while this button is pressed.
"REW/REV" .............. The pickup slides toward the inner
periphery while this button is pressed.
If PICKUP IN is on, input is invalid.
If PICKUP IN is on, input is invalid.
"PLAY" ..................... Invalid
"STOP" ..................... Return to step 1
"STOP" ..................... Return to step 1
*If the focus is not received, the process returns to step 1.
Other cautions
• TOC IL is not available for this test mode.
• TOC IL is not available for this test mode.
3. Tuner Test Mode (TEST 2)
1. Outline of tuner (radio) test mode
The tuner test mode is intended to store the adjustment
and measurement frequencies in the preset memory
CH. When adjusting the tuner section in the production
line, adjusting personnel are not required to set frequency.
and measurement frequencies in the preset memory
CH. When adjusting the tuner section in the production
line, adjusting personnel are not required to set frequency.
2. Details of tuner test mode
Press the "TUNER(BAND)" and "VOLUME UP" buttons
in POWER OFF state and turn on the power by the use
of "ON/STAND BY" button to preset and store frequency
for adjustment and measurement of destination specified
by the AREA terminal in the preset memory CH. However,
Ordinary 1 and Ordinary 2 are stored in the destinations
when the test mode is obtained.
in POWER OFF state and turn on the power by the use
of "ON/STAND BY" button to preset and store frequency
for adjustment and measurement of destination specified
by the AREA terminal in the preset memory CH. However,
Ordinary 1 and Ordinary 2 are stored in the destinations
when the test mode is obtained.
(As for frequencies to be preset and stored for each
destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary
operations of TUNER function. FUNCTION switching is
invalid.
destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary
operations of TUNER function. FUNCTION switching is
invalid.
It is necessary to discard the content of preset memory
when the tuner test mode is ended; be sure to write "0000"
or "1111" bits in the memory to be checked for judging
memory error at initial setting and to initialize memory.
when the tuner test mode is ended; be sure to write "0000"
or "1111" bits in the memory to be checked for judging
memory error at initial setting and to initialize memory.
When the tuner test mode is obtained, the following display
lights for one second.
lights for one second.
• The TUNER TEST 2 mode is obtained with >> + MEMORY/
SET + ON/STAND-BY. ->Turn off AC in the TEST 2 mode
to restore the initial state.
SET + ON/STAND-BY. ->Turn off AC in the TEST 2 mode
to restore the initial state.
Turn off POWER to protect the memory of TEST 2 mode.
Turn off POWER again to obtain the ordinary operation
while the data is stored in the memory (besides TUNER).
Turn off POWER again to obtain the ordinary operation
while the data is stored in the memory (besides TUNER).
If AC OFF state is maintained in this state for about 1/2 day,
start is executed in the initial state.
start is executed in the initial state.
• To clear the whole memory, insert the AC cord, pressing
MEMORY/SET + CD PLAY.
MEMORY/SET + CD PLAY.
CD-E250E
CD-E550E
– 14 –
3.Preset frequencies for various destinations
(random preset memory)
BAND
6
AM 530 kHz
7
AM1720 kHz
8
AM
AM 990 kHz
9
AM 600 kHz
10
AM1400 kHz
AM
CH
BAND
16-35
36
FM106.0 MHz
37
FM 90.0 MHz
38
FM
FM 98.0 MHz
39
MONO
FM108.0 MHz
40
FM 87.5 MHz
FM
CH
• The slant line sections of the table store no memory.
BAND
1
FM 87.5 MHz
2
FM108.0 MHz
3
FM
FM 98.0 MHz
4
STEREO
FM 90.0 MHz
5
FM106.0 MHz
FM
CH
4. Electronic volume Test Mode (TEST 3)
When this test mode is obtained, the following display lights
for one second.
for one second.
In this mode, volume is Volume -14 dB (STEP 23), FLAT
AND X-BASS ON, and start-up function to CD, respectively.
The button operations in the test mode are the same as
those of ordinary operation except volume UP/DOWN.
AND X-BASS ON, and start-up function to CD, respectively.
The button operations in the test mode are the same as
those of ordinary operation except volume UP/DOWN.
(1) The display is the same as that of ordinary operation
except test mode setting.
(2) Unlike the ordinary state, the volume is controlled with
the volume UP/DOWN button in accordance with the
following three steps.
following three steps.
Volume-
∞
(STEP 0) <-> Volume-14 dB (STEP 23) <-
> Volume-0 (STEP 30)
(3) X-BASS is switched when button is pressed..
5. Timer test Mode (TEST 4)
When this test mode is obtained, the following display lights
for one second.
for one second.
Set the current time and timer time according to the following
procedure to reproduce the timer.
procedure to reproduce the timer.
1.Set the current time to 1:00, the timer to ON time 1:05, the
function to CD, and volume to STEP 12, respectively. One
minute is counted as one second, and the timer is reproduced.
The fade-in (when playback is started) is executed at a rate
of one step for 1 sec. After completion of fade-in, the fade-
out is executed at a rate of one step for 1 sec (WAIT 1 sec
inserted).
minute is counted as one second, and the timer is reproduced.
The fade-in (when playback is started) is executed at a rate
of one step for 1 sec. After completion of fade-in, the fade-
out is executed at a rate of one step for 1 sec (WAIT 1 sec
inserted).
After completion of fade-out, the power is turned off (after
WAIT 1 sec), and the mode is shifted to the standby.
The display during operation is the same as that of ordinary
timer operation.
6. FL Test Mode (TEST 5)
When the FL test mode is obtained, all the FL segments are
lighted. Then pressing the "PLAY" button switches display
as below.
lighted. Then pressing the "PLAY" button switches display
as below.
Lighting of all segments
Lighting of odd segments
Lighting of even segments
– 15 –
CD-E250E
CD-E550E
7. Button input diagnosis Test Mode (TEST 6)
When the test mode is obtained, the following is displayed.
(STAND-BY AND DEMO OFF STATUS)
(STAND-BY AND DEMO OFF STATUS)
This test mode is intended to check whether all the main
unit buttons can be detected. Accordingly, in this test
mode, it is checked whether the "ON/STAND BY" button
was pressed after all the buttons shown below were pressed.
If the result is OK, OK is displayed. If any one of keys was
not pressed, an error is displayed. In both cases of OK
termination or error termination, the mode is shifted to the
standby mode if the "ON/STAND BY" button is pressed
subsequently.
unit buttons can be detected. Accordingly, in this test
mode, it is checked whether the "ON/STAND BY" button
was pressed after all the buttons shown below were pressed.
If the result is OK, OK is displayed. If any one of keys was
not pressed, an error is displayed. In both cases of OK
termination or error termination, the mode is shifted to the
standby mode if the "ON/STAND BY" button is pressed
subsequently.
All models using this type of microcomputer are not always
provided with the same buttons. Since the buttons used are
different depending on models, types of buttons to be used
are determined by whether SURROUND, and an electric lid
are available at the initial setting by MODEL port.
provided with the same buttons. Since the buttons used are
different depending on models, types of buttons to be used
are determined by whether SURROUND, and an electric lid
are available at the initial setting by MODEL port.
The order of buttons to be pressed is not determined.
Accordingly, it is checked whether all buttons have been
pressed.
Accordingly, it is checked whether all buttons have been
pressed.
1. PU-IN buttons: REW/PRESET DOWN + CD STOP
Since this model is provided with SURROUND (HAVE
OR NOT), and electric CD lid, the following 10 buttons
are detected as all buttons.
PLAY, X-BASS/DEMO, FUNCTION, VOLUME UP/
DOWN, MEMORY/SET, REW, FF, STOP, CD-OPEN/
CLOSE
OR NOT), and electric CD lid, the following 10 buttons
are detected as all buttons.
PLAY, X-BASS/DEMO, FUNCTION, VOLUME UP/
DOWN, MEMORY/SET, REW, FF, STOP, CD-OPEN/
CLOSE
The OK/ERROR display of test result is as follows.
8. CD MECHANISM Aging Test Mode (TEST 8)
OPEN/CLOSE & 3 DISC CHANGER aging test.
DISPLAY:
FUNCTION:
Enter the TEST MODE 8, MCU control the 3 DISC
CHANGER OPEN/CLOSE. After open finished, tray rotate
1 circle (360 degree). Then close, After close finished, tray
rotate 1 circle (360 degree) again.
Enter the TEST MODE 8, MCU control the 3 DISC
CHANGER OPEN/CLOSE. After open finished, tray rotate
1 circle (360 degree). Then close, After close finished, tray
rotate 1 circle (360 degree) again.
Request:
Every period include 4 operation. Below is TIMING:
Every period include 4 operation. Below is TIMING:
Enter test mode
CHANGER
Find the disc 1 position
open
delay 3S after open finish
rotate 1 circle
close
delay 3S after close finish
rotate 1 circle
CD-E250E
CD-E550E
– 16 –
•
The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
sis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
3. In the deck section, a tape is being played back.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
•
Parts marked with “
1
” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•
Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•
Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•
Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
notice.
TYPES OF TRANSISTOR AND LED
REF. NO
DESCRIPTION
POSITION
SW711
MEMORY/SET
ON—OFF
SW712
TUNING/TIME DOWN
ON—OFF
SW713
TUNING/TIME UP
ON—OFF
SW714
TIMER/SLEEP
ON—OFF
SW715
CLOCK
ON—OFF
SW719
EQUALISER
ON—OFF
SW720
VOLUME UP
ON—OFF
SW721
VOLUME DOWN
ON—OFF
SW722
TUNER(BAND)
ON—OFF
SW723
CD
ON—OFF
SW724
REC/PAUSE
ON—OFF
SW801
TAPE2 INITIALIZE
ON—OFF
SW802
TAPE1 INITIALIZE
ON—OFF
SW803
TAPE2 REC
ON—OFF
SW1
PICKUP IN
ON—OFF
SW401
DISC UP/DOWN
ON—OFF
SW402
OPEN/CLOSE
ON—OFF
SW403
DISC NO.
ON—OFF
SW404
DISC 1
ON—OFF
SW701
X-BASS/DEMO
ON—OFF
SW702
ON/STAND-BY
ON—OFF
SW703
OPEN/CLOSE
ON—OFF
SW704
DISK SKIP
ON—OFF
SW705
VIDEO/AUX
ON—OFF
SW706
TAPE
ON—OFF
SW707
PRESET DOWN
ON—OFF
SW708
PLAY/REPEAT
ON—OFF
SW709
PRESET UP
ON—OFF
SW710
STOP
ON—OFF
REF. NO
DESCRIPTION
POSITION
(1) (2) (3)
(S) (G) (D)
E C B
FRONT
VIEW
HSB562 C
HSC1609 GR
KRA102 M
KRA107 M
KRC102 M
KRC104 M
KRC107 M
HSC1609 GR
KRA102 M
KRA107 M
KRC102 M
KRC104 M
KRC107 M
KSA1015 GR
KSA1271 Y
KSC1815 GR
KSC3203 Y
SSC1674 C
2SC2001 K
KSA1271 Y
KSC1815 GR
KSC3203 Y
SSC1674 C
2SC2001 K
KDV147B
SVC348S
SVC348S
1
2
3
SD3210W+
FRONT
VIEW
VIEW
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