Sharp CD-CH1500 (serv.man9) Service Manual ▷ View online
– 9 –
CD-CH1500H/CD-CH1500W
Troubleshooting Chart
Many potential "problems" can be resolved by the owner without calling a service techni-
cian.
If something is wrong with this product, check the following before calling your authorised
SHARP dealer or service centre.
cian.
If something is wrong with this product, check the following before calling your authorised
SHARP dealer or service centre.
General
CD player
Tuner
Cassette deck
Remote control
Condensation
Sudden temperature changes, storage or operation in an extremely humid environ-
ment may cause condensation inside the cabinet (CD pickup, tape heads, etc.) or on
the transmitter LED on the remote control.
Condensation can cause the unit to malfunction. If this happens, leave the power on
with no disc (or cassette) in the unit until normal playback is possible (about 1 hour).
Wipe off any condensation on the transmitter LED with a soft cloth before operating
the unit.
ment may cause condensation inside the cabinet (CD pickup, tape heads, etc.) or on
the transmitter LED on the remote control.
Condensation can cause the unit to malfunction. If this happens, leave the power on
with no disc (or cassette) in the unit until normal playback is possible (about 1 hour).
Wipe off any condensation on the transmitter LED with a soft cloth before operating
the unit.
Symptom
Possible cause
The clock is not on time.
Did a power failure occur? Reset the clock.
When a button is pressed, the
unit does not respond.
unit does not respond.
Set this unit to the power stand-by mode and then
turn it back on.
turn it back on.
If the unit still malfunctions, reset it.
No sound is heard.
Is the volume level set to "0"?
Are the headphones connected?
Are the speaker wires disconnected?
Symptom
Possible cause
Playback does not start.
Is the disc loaded upside-down?
Playback stops in the middle
or is not performed properly.
or is not performed properly.
Does the disc satisfy the standards?
Is the disc distorted or scratched?
Playback sounds are
skipped, or stopped in the
middle of a track.
skipped, or stopped in the
middle of a track.
Is the unit located near excessive vibrations?
Is the disc very dirty?
Has condensation formed inside the unit?
Symptom
Possible cause
Radio makes unusual noise
consecutively.
consecutively.
Is the unit placed near the TV or computer?
Is the FM/AM loop aerial placed properly? Move the
AC power lead away from the aerial if located near.
AC power lead away from the aerial if located near.
Symptom
Possible cause
Cannot record.
Is the erase-protection tab removed?
Cannot record tracks with
proper sound quality.
proper sound quality.
Is it a normal tape? (You cannot record on a metal
or CrO tape.)
or CrO tape.)
Cannot erase completely.
Sound skipping.
Is there any slack? Is the tape stretched?
Cannot hear treble.
Are the capstan, pinch roller, or heads dirty?
Sound fluctuation.
Cannot remove the tape.
If a power failure occurs during playback, the heads
remain engaged with the tape. Do not open the
compartment forcibly. Wait until electricity resumes.
remain engaged with the tape. Do not open the
compartment forcibly. Wait until electricity resumes.
Symptom
Possible cause
The remote control does not
operate.
operate.
Is the AC power lead of the stereo system plugged
in?
in?
Is the battery polarity correct?
Are the batteries dead?
Is the distance or angle incorrect?
Does the remote control sensor receive strong
light?
light?
If trouble occurs
When this product is subjected to strong external interference (mechanical shock,
excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is
operated incorrectly, it may malfunction.
excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is
operated incorrectly, it may malfunction.
If such a problem occurs, do the following:
1
1
Set the unit to the stand-by mode and turn the power on again.
2
If the unit is not restored in the previous operation, unplug and plug in the unit,
and then turn the power on.
and then turn the power on.
Clearing all the memory (reset)
If neither operation above restores the unit, clear all the memory by following
the instructions below.
1
the instructions below.
1
Press the ON/STAND-BY button to enter the power stand-by mode.
2
Whilst pressing down the VOLUME button, press the ON/STAND-BY button
until "ALL CLEAR" appears.
until "ALL CLEAR" appears.
Caution:
This operation will erase all data stored in memory including clock, timer settings,
tuner preset and CD programme.
This operation will erase all data stored in memory including clock, timer settings,
tuner preset and CD programme.
Before transporting the unit
On the back of this unit is equipped with a transport safety screw in order to prevent
damage during transportation.
damage during transportation.
1
Press the ON/STAND-BY button to turn the power on.
2
Remove all discs from the unit, close the disc tray. "CD NO DISC" is displayed.
3
Press the ON/STAND-BY button to enter the stand-by mode. "GOOD-BYE" is dis-
played.
played.
4
When "GOOD-BYE" disappears, unplug the AC power lead from the AC socket.
5
Insert the transport safety screw into the back of the unit and tighten it with a flat-
blade screwdriver.
blade screwdriver.
Troubleshooting Chart
Remote Control
Notes concerning use:
Replace the batteries if the operating distance is reduced or if the operation
becomes erratic. Purchase 2 "AA" size batteries (UM/SUM-3, R6, HP-7 or similar).
Periodically clean the transmitter on the remote control and the sensor on the ste-
reo system with a soft cloth.
Exposing the sensor on the stereo system to strong light may interfere with opera-
tion. Change the lighting or the direction of the stereo system.
Keep the remote control away from moisture, heat, shock, and vibrations.
becomes erratic. Purchase 2 "AA" size batteries (UM/SUM-3, R6, HP-7 or similar).
Periodically clean the transmitter on the remote control and the sensor on the ste-
reo system with a soft cloth.
Exposing the sensor on the stereo system to strong light may interfere with opera-
tion. Change the lighting or the direction of the stereo system.
Keep the remote control away from moisture, heat, shock, and vibrations.
Test of the remote control
Face the remote control directly to the remote sensor on the unit.
The remote control can be used within the range shown below:
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the
music.
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the
music.
Remote sensor
0.2 m - 6 m (8" - 20')
CD-CH1500H/CD-CH1500W
– 10 –
Using the Radio Data System (RDS) (CD-CH1500H Only)
RDS is a broadcasting service which a growing number of FM stations provide.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro-
gramme such as sports or music, etc.
When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car-
ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
"PTYI" (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is
received.
"RT" (Radio Text) will appear whilst the unit receives the Radio text data.
"CT" (Clock Time) will appear whilst the unit receives the RDS CT data.
You can control the RDS by using the remote control only.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro-
gramme such as sports or music, etc.
When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car-
ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
"PTYI" (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is
received.
"RT" (Radio Text) will appear whilst the unit receives the Radio text data.
"CT" (Clock Time) will appear whilst the unit receives the RDS CT data.
You can control the RDS by using the remote control only.
Information provided by RDS
Each time the DISP MODE button is pressed, the display will switch as follows:
When you are tuning in to a station other than an RDS station or to an RDS station
which sends weak signal, the display will change in the following order:
which sends weak signal, the display will change in the following order:
Station name (PS)
Frequency
Programme type (PTY)
RDS clock time
(8 Languages)
Date (for 3 seconds)
Programme type (PTY)
Clock-time and date (CT)
(English fixed)
Radio text (RT)
NO PS
NO PTY
FM 98.00 MHz
NO CT
NO RT
Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and
TA (Traffic Announcement).
You can search for and receive the following PTY, TP and TA signals.
TA (Traffic Announcement).
You can search for and receive the following PTY, TP and TA signals.
Note:
When you select a programme in the EON stand-by mode, the unit will display "TI"
instead of "TA".
NEWS
Short accounts of facts, events and publicly expressed views, reportage
and actuality.
and actuality.
AFFAIRS
Topical programme expanding or enlarging upon the news, generally in
different presentation style or concept, including debate, or analysis.
different presentation style or concept, including debate, or analysis.
INFO
Programmes whose purpose is to impart advice in the widest sense.
SPORT
Programme concerned with any aspect of sport.
EDUCATE
Programme intended primarily to educate, of which the formal element is
fundamental.
fundamental.
DRAMA
All radio plays and serials.
CULTURE
Programmes concerned with any aspect of national or regional culture, in-
cluding language, theatre, etc.
cluding language, theatre, etc.
SCIENCE
Programmes about the natural sciences and technology.
VARIED
Used for mainly speech-based programmes usually of light-entertainment
nature, not covered by other categories. Examples include: quizzes, panel
games, personality interviews.
nature, not covered by other categories. Examples include: quizzes, panel
games, personality interviews.
POP M
Commercial music, which would generally be considered to be of current
popular appeal, often featuring in current or recent record sales charts.
popular appeal, often featuring in current or recent record sales charts.
ROCK M
Contemporary modern music, usually written and performed by young mu-
sicians.
sicians.
EASY M
Current contemporary music considered to be "easy-listening", as op-
posed to Pop, Rock or Classical, or one of the specialised music styles,
Jazz, Folk or Country. Music in this category is often but not always, vocal,
and usually of short duration.
posed to Pop, Rock or Classical, or one of the specialised music styles,
Jazz, Folk or Country. Music in this category is often but not always, vocal,
and usually of short duration.
LIGHT M
Classical music for general, rather than specialist appreciation. Examples
of music in this category are instrumental music, and vocal or choral
works.
of music in this category are instrumental music, and vocal or choral
works.
CLASSICS
Performances of major orchestral works, symphonies, chamber music,
etc., and including Grand Opera.
etc., and including Grand Opera.
OTHER M
Musical styles not fitting into any of the other categories. Particularly used
for specialist music of which Rhythm & Blues and Reggae are examples.
for specialist music of which Rhythm & Blues and Reggae are examples.
WEATHER
Weather reports and forecasts and meteorological information.
FINANCE
Stock Market reports, commerce, trading, etc.
CHILDREN
For programmes targeted at a young audience, primarily for entertainment
and interest, rather than where the objective is to educate.
and interest, rather than where the objective is to educate.
SOCIAL
Programmes about people and things that influence them individually or in
groups. Includes: sociology, history, geography, psychology and society.
groups. Includes: sociology, history, geography, psychology and society.
RELIGION
Any aspect of beliefs and faiths, involving a God or Gods, the nature of ex-
istence and ethics.
istence and ethics.
PHONE IN
Involving members of the public expressing their views either by phone or
at a public forum.
at a public forum.
TRAVEL
Features and programmes concerned with travel to near and far destina-
tions, package tours and travel ideas and opportunities. Not for use for an-
nouncements about problems, delays, or roadworks affecting immediate
travel where TP/TA should be used.
tions, package tours and travel ideas and opportunities. Not for use for an-
nouncements about problems, delays, or roadworks affecting immediate
travel where TP/TA should be used.
LEISURE
Programmes concerned with recreational activities in which the listener
might participate. Examples include, Gardening, Fishing, Antique collect-
ing, Cooking, Food & Wine, etc.
might participate. Examples include, Gardening, Fishing, Antique collect-
ing, Cooking, Food & Wine, etc.
JAZZ
Polyphonic, syncopated music characterised by improvisation.
COUNTRY
Songs which originate from, or continue the musical tradition of the Amer-
ican Southern States. Characterised by a straightforward melody and nar-
rative story line.
ican Southern States. Characterised by a straightforward melody and nar-
rative story line.
NATION M
Current Popular Music of the Nation or Region in that country's language,
as opposed to International 'Pop' which is usually US or UK inspired and
in English.
as opposed to International 'Pop' which is usually US or UK inspired and
in English.
OLDIES
Music from the so-called "golden age" of popular music.
FOLK M
Music which has its roots in the musical culture of a particular nation, usu-
ally played on acoustic instruments. The narrative or story may be based
on historical events or people.
ally played on acoustic instruments. The narrative or story may be based
on historical events or people.
DOCUMENT
Programme concerned with factual matters, presented in an investigative
style.
style.
TEST
Broadcast when testing emergency broadcast equipment or receivers.
ALARM !
Emergency announcement made under exceptional circumstances to give
warning of events causing danger of a general nature.
warning of events causing danger of a general nature.
NONE
No programme type (receive only).
TP
Broadcasts which carry traffic announcements.
TA
Traffic announcements are currently on air.
– 11 –
CD-CH1500H/CD-CH1500W
System Connections (CD-CH1500W Only)
Setting the AC voltage selector
Check the setting of the AC voltage selector located on the rear panel before plug-
ging the unit into an AC socket. If necessary, adjust the selector to correspond to the
AC power voltage used in your area.
ging the unit into an AC socket. If necessary, adjust the selector to correspond to the
AC power voltage used in your area.
Turn the selector with a screwdriver until the appropriate voltage number
appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).
Connecting the AC power lead
After making all connections, plug the unit. If you plug the unit first, the unit
will enter the demonstration mode.
will enter the demonstration mode.
Notes:
Plug the AC power lead into an AC socket, after any connections.
Unplug the AC power lead from the AC socket if the unit will not be in use for a pro-
longed period of time.
Unplug the AC power lead from the AC socket if the unit will not be in use for a pro-
longed period of time.
Setting the FM/AM span selector
The International Telecommunication Union (ITU) has established that member coun-
tries should maintain either a 100 kHz or a 50 kHz interval between broadcasting fre-
quencies of FM stations and 10 kHz or 9 kHz for AM station. The illustration shows
the 50/9 kHz zones (regions 1 and 3), and the 100/10 kHz zone (region 2).
Before using the unit, set the SPAN SELECTOR switch (on the rear panel) to the
interval (span) of your area.
tries should maintain either a 100 kHz or a 50 kHz interval between broadcasting fre-
quencies of FM stations and 10 kHz or 9 kHz for AM station. The illustration shows
the 50/9 kHz zones (regions 1 and 3), and the 100/10 kHz zone (region 2).
Before using the unit, set the SPAN SELECTOR switch (on the rear panel) to the
interval (span) of your area.
To change the tuning zone:
1
Press the ON/STAND-BY button to enter the stand-by mode.
2
Set the SPAN SELECTOR switch (on the rear panel) as follows.
For 50 kHz FM interval (9 kHz in AM) 50/9
For 100 kHz FM interval (10 kHz in AM) 100/10
For 100 kHz FM interval (10 kHz in AM) 100/10
3
Whilst pressing down the VOLUME button, press the ON/STAND-
BY button until "ALL CLEAR" appears.
BY button until "ALL CLEAR" appears.
Caution:
This operation will erase all data stored in memory including clock and timer settings,
and tuner and CD presets.
This operation will erase all data stored in memory including clock and timer settings,
and tuner and CD presets.
CD-CH1500H/CD-CH1500W
– 12 –
1
Top Cabinet
1. Screw .................. (A1) x5
12-1
2
Side Panel
1. Screw .................. (B1) x8
12-1
(Left/Right)
3
Rear Panel
1. Screw ................. (C1) x3
12-2
2. Screw ................. (C2) x8
(For CD-CH1500H)
2. Screw ................. (C2) x7
(For CD-CH1500W)
(For CD-CH1500H)
2. Screw ................. (C2) x7
(For CD-CH1500W)
4
Front Panel
1. Flat Cable ........... (D1) x1
12-2
2. Screw ................. (D2) x5
3. Socket ................ (D3) x6
3. Socket ................ (D3) x6
5
Sub Trans PWB
1. Screw .................. (E1) x3
12-2
2. Socket ................. (E2) x5
6
Main PWB
1. Flat Cable ............ (F1) x1
12-2
2. Screw .................. (F2) x2
3. Screw .................. (F3) x1
4. Socket ................. (F4) x4
3. Screw .................. (F3) x1
4. Socket ................. (F4) x4
7
Power PWB/
1. Socket ................ (G1) x1
13-1
Speaker PWB
(For CD-CH1500H)
1. Socket ................ (G1) x2
(For CD-CH1500W)
2. Screw ................. (G2) x2
1. Socket ................ (G1) x2
(For CD-CH1500W)
2. Screw ................. (G2) x2
8
Tape Mechanism
1. Open the cassette holder.
13-2
2. Screw ................. (H1) x4
9
CD Switch PWB
1. Socket ................. (J1) x1
13-2
2. Screw .................. (J2) x6
3. Hook .................... (J3) x2
3. Hook .................... (J3) x2
10
Switch PWB
1. Screw .................. (K1) x1
13-2
2. Hook .................... (K2) x1
11
Headphones PWB
1. Screw .................. (L1) x1
13-2
2. Bracket ................ (L2) x1
12
CD Changer Door
1. Screw ................. (M1) x3
13-2
Panel/Control Panel 2. Screw ................. (M2) x2
13
Motor PWB
1. Solder .................. (P1) x2
13-2
14
CD Changer Door
1. Screw ................. (Q1) x4
13-3
Panel
15
Control Panel
1. Screw ................. (R1) x6
13-3
16
Control PWB
1. Screw .................. (S1) x5
13-4
2. Socket ................. (S2) x1
17
Jog PWB
1. Knob .................... (T1) x1
13-4
2. Screw .................. (T2) x5
18
LED B PWB
1. Screw ................. (U1) x3
13-4
19
Cassette Holder
1. Open the cassette holder cover.
13-5
Cover
2. Screw .................. (V1) x4
3. Display Panel ...... (V2) x1
4. Hook .................... (V3) x4
3. Display Panel ...... (V2) x1
4. Hook .................... (V3) x4
20
Display PWB/
1. Screw ................. (W1) x4
13-6
LED A PWB
2. Hook ................... (W2) x2
DISASSEMBLY
Figure 12-2
STEP
REMOVAL
PROCEDURE
FIGURE
Figure 12-1
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
CD-CH1500H/CD-CH1500W
CD-CH1500H/CD-CH1500W
Front Panel
Top Cabinet
Side Panel(Right)
Side Panel
(Left)
Rear Panel
(B1)x4
ø3x10mm
(A1)x2
ø3x16mm
(B1)x4
ø3x10mm
(A1)x1
ø3x10mm
(A1)x2
ø3x16mm
(C2)x7
ø3x10mm
(C2)x1
ø3x10mm
CD-CH1500H
Only
Only
Main PWB
Front Panel
Tape Mechanism PWB
(D3)x2
Speaker
PWB
(C1)x1
ø3x10mm
(F2)x2
ø3x10mm
(C1)x2
ø3x10mm
Rear
Panel
(D2)x2
ø3x8mm
(F3)x1
ø3x8mm
(F4)x1
(F1)x1
(D1)x1
CD Servo PWB
Power PWB
Power PWB
(F4)x1
(F4)x1
Main
PWB
(D2)x1
ø3x8mm
(D3)x4
(D2)x1
ø3x8mm
(E2)x3
Power PWB
Main PWB
Lug Wire
Speaker
PWB
(D2)x1
ø3x8mm
(E1)x3
ø3x8mm
(E2)x2
Sub Trans
PWB
(F4)x1
Illustration: CD-CH1500H
Click on the first or last page to see other CD-CH1500 (serv.man9) service manuals if exist.