Sharp CD-DP2500 (serv.man27) Service Manual ▷ View online
– 17 –
CD-DP2500H
SP out
L-ch
Input signal is output.
(SO901)
R-ch
Input signal is output.
(SO901) SP out C-ch
SP cut, no output
(SO901) SP out S-ch
Almost no output (only omitting component)
SP out
L-ch
Almost no output (only omitting component)
(SO901)
R-ch
Almost no output (only omitting component)
(SO901) SP out C-ch Input signal is output.
(SO901) SP out S-ch
Almost no output (only omitting component)
State of set Dolby Pro Logic
Dolby Pro Logic On mode
Output point
Bypass mode
Normal mode
Phantom mode
IC501
1 pin L-out
Output enabled state
Output enabled state
Output enabled state
2 pin R-out
Output enabled state
Output enabled state
Output enabled state
IC501
3pin C-out
No output
Output enabled state
No output
IC501
9pin S-out
No output
Output enabled state
Output enabled state
SP OUT
L-ch
Output enabled state
Output enabled state
Output enabled state
(SO901)
R-ch
Output enabled state
Output enabled state
Output enabled state
SP OUT C-ch
No output in MUTE (Q501) state
Output enabled state
No output in MUTE (Q501) state
(SO901)
SP OUT S-ch
No output in MUTE (Q502) state
Output enabled state
Output enabled state
(SO901)
EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD
Test tone output
• Pro Logic ON Normal mode
Press the remote control TEST TONE button.
• Pro Logic ON Normal mode
Press the remote control TEST TONE button.
→
Output of only L-ch
→
Output of only C-ch
↑
↓
Output of only S-ch
←
Output of only R-ch
The test tone (noise) is repeatedly output for output period
(2 sec).
In this case the following indication appears repeatedly.
(2 sec).
In this case the following indication appears repeatedly.
→
TEST
→
L-ch
→
C-ch
↑
↓
S-ch
←
R-ch
• Pro Logic ON Phantom mode
Press the remote control TEST TONE button.
Press the remote control TEST TONE button.
→
Output of only L-ch
→
Output of only R-ch
↑
↓
←
Output of only S-ch
The test tone (noise) is repeatedly output for output period
(2 sec).
(2 sec).
In this case the following indication appears repeatedly.
→
TEST
→
L-ch
→
R-ch
↑
↓
←
S-ch
←
Outline
• Namely, two speakers are connected in parallel to one
amplifier.
• In the Pro Logic BYPASS mode the amplifier for C-ch (center
channel) and the amplifier for S-ch (surround channel) are in
MUTE state. The SP output is cut.
MUTE state. The SP output is cut.
• In the normal mode of Pro Logic ON mode the amplifiers for
C-ch and S-ch are in operative state, so that the SP output
appears.
appears.
• In the Phantom mode of Pro Logic ON mode the amplifier for
C-ch is in MUTE state, so that the SP output is cut. The
amplifier for S-ch (surround) is in operative state, so that the
SP output appears
amplifier for S-ch (surround) is in operative state, so that the
SP output appears
•
State of element output and terminal output in specific mode
Relation between VIDEO IN input and output in Pro Logic
ON state
(1) L-ch/R-ch same phase input into VIDEO IN input jack in
ON state
(1) L-ch/R-ch same phase input into VIDEO IN input jack in
VIDEO Function mode
Output point
Normal mode
Output point
Phantom mode
(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in
VIDEO Function mode
(Reverse phase: Phase difference between L and R is 180
°
)
Output point
Normal mode
SP out
L-ch
Almost no output (only omitting component)
(SO901)
R-ch
Almost no output (only omitting component)
(SO901) SP out C-ch
Almost no output (only omitting component)
(SO901) SP out S-ch
Input signal is output.
Output point
Phantom mode
SP out
L-ch
Almost no output (only omitting component)
(SO901)
R-ch
Almost no output (only omitting component)
(SO901) SP out C-ch
SP cut, no output
(SO901) SP out S-ch
Input signal is output.
• Accordingly, if you want to output signal waveform to C-ch SP
out, give the same phase input into L-ch/R-ch INPUT in the
Pro Logic Normal mode.
Pro Logic Normal mode.
If one of channels receives input, C-ch does not output. Only
L-ch or R-ch outputs.
• If you want to output signal waveform to S-ch SP out, you can
use either Normal mode or Phantom mode. However, 180
°
reverse phase input must be given to L-ch/R-ch INPUT.
CD-DP2500H
– 18 –
Yes
Yes
Comparing freg.
same or not?
Between current receiving
frequency and (already)
previously memorized
frequency.
same or not?
Between current receiving
frequency and (already)
previously memorized
frequency.
Hold down the ASPM button for 3 more second.
No operate. After displayed “END”. Return to
previous station.
previous station.
“ASPM” blinks in the display.
Begin to scan start 87.50
→
108.00 MHz
Preset CH memory full over?
SD (TUNE) DET out OK?
Yes
No
No
No
No
No
If count 1st OK?
Yes
If count 2nd OK?
Yes
RDS signal or not? PI—identify
Yes
Comparing PI cord
same or not?
between current receiving
PI and before PI which is
already memorized by
ASPM on this time.
same or not?
between current receiving
PI and before PI which is
already memorized by
ASPM on this time.
Yes
Yes
No
Comparing freg.
same or not?
between current receiving
frequency and (already)
previouslymemorized
frequency.
same or not?
between current receiving
frequency and (already)
previouslymemorized
frequency.
No
Memorized to the lowest vacant
preset channel.
preset channel.
No
Memorized to the lowest vacant
preset channel.
preset channel.
Compare the field
strength of current receiving
signal.
Is receiving signal stronger than
signal which has same PI cord
and is already memorized to
preset memory ahead of this
receiving time?
strength of current receiving
signal.
Is receiving signal stronger than
signal which has same PI cord
and is already memorized to
preset memory ahead of this
receiving time?
No effect
No effect
No effect
Effect
Pass
No effect
No effect
Pass
No effect
No effect
Pass
No effect
No effect
Pass
No effect
No effect
Displayed the TTL quantity of memorized
stations by ASPM operation on this time.
And return to the previous
receiving freq. automatically.
stations by ASPM operation on this time.
And return to the previous
receiving freq. automatically.
Begin to ASPM SCAN from the next
CH-SPAN again.
CH-SPAN again.
Repeat and continue with same format
ASPM operation untill 108 MHz.
After reached 108 MHz, displayed the TTL
quantity of memorized stations.
And return to the previous receiving freq.
automatically.
ASPM operation untill 108 MHz.
After reached 108 MHz, displayed the TTL
quantity of memorized stations.
And return to the previous receiving freq.
automatically.
Preset CH memory become full over?
Yes
No
ASPM, summary operation
TEST MODE
RDS OPERATION
There is no RDS (Radio Data System) broadcasting service in Australia and New Zealand.
KEY
TEST MODE
CONTENTS
[ON/STAND-BY] [TUNER] + [X-BASS]
TEST 1
TUNER PRESET MEMORY CLEAR
[ON/STAND-BY] [MEMORY/SET] + [X-BASS]
TEST 2
TUNER PRESET FOR PRODUCTION
[ON/STAND-BY] [>>] + [X-BASS]
TEST 3
KEY AND DISPLAY TEST
[ON/STAND-BY] [CD] + [X-BASS]
TEST 4
CD TEST MODE
[ON/STAND-BY] [TAPE] + [X-BASS]
TEST 5
TAPE TEST MODE
[ON/STAND-BY] [>] + [X-BASS]
TEST 6
ALL CLEAR(RESET)
[ON/STAND-BY] [TUN UP] + [X-BASS]
TEST 7
AUDIO TEST
[ON/STAND-BY] [TUN DOWN] + [X-BASS]
TEST 8
PRODUCTION INITIALIZE FOR CHANGER
[ON/STAND-BY] [STOP] + [X-BASS]
TEST 10
RDS TEST
During POWER OFF mode,push below each 2 keys [ON/STAND-BY] key.
Then go to each TEST MODE.
Then go to each TEST MODE.
– 19 –
CD-DP2500H
4. No adjust type (None adjusting circuit.)
5. Added EON button.
6. Need to change RDS logo due to the addition of EON feature.
7. Added EON—TI, EON—PTY function.
5. Added EON button.
6. Need to change RDS logo due to the addition of EON feature.
7. Added EON—TI, EON—PTY function.
3. Summary of CD-DP2500H RDS—EON operation
EON—PTY: Select and set the desired “PTY”
→
stand-by
→
switch to ON (other network) Station at the start of desired PTY
automatically
→
stay and listen to PTY of ON station
→
switch back to TN (This net) station automatically at the end
of PTY (ON) i.e. after changing to another PTY (except AFFAIRS) or cancelling to receive PTY of ON station
midway.
midway.
EON—TI:
Select and set the “TI”
→
stand-by
→
switch to ON station at the start of traffic announcement automatically
→
stay
and listen to TA of ON station
→
switch back to TN station automatically at the end of TA (ON).
ie after TA (ON) is over or cancelled to receive TA of ON station midway.
When switching TN
When switching TN
→
ON station.
In case of exist 2 more stations having the desired (specified) “PTY” or “TI”, the receiver will select and switch to ON station
comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then receiver
switches straight to that ON station (CH), without comparing field strength so can make a quick switching from TN—ON station.
Preset memory takes priority of switching TN—ON station.
Therefore ASPM is usefull not only for PTY search but also for rapid EON switching.
Anyway CD-BA1500H EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.
comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then receiver
switches straight to that ON station (CH), without comparing field strength so can make a quick switching from TN—ON station.
Preset memory takes priority of switching TN—ON station.
Therefore ASPM is usefull not only for PTY search but also for rapid EON switching.
Anyway CD-BA1500H EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.
• ASPM SCAN: 87.50MHz
→
108.00 MHz.
• Only RDS signal is memorized by ASPM because RDS signal has PI code and is suitable and convenient for ASPM operation.
ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same
ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same
PI code.
Same PI code — freq: different
(AF’S)
PS: same
PTY:
PS: same
PTY:
same
Each PI has AF’S list by individually.
Exa: P1 has f
Exa: P1 has f
1
, f
2
, f
3
(same PTY).
P2 has f
4
, f
5
(same PTY).
[For example]
Pickup and memorized to preset CH.
f 1
f 2 f 3
f 2 f 3
P 1 (PI code)
PS 1 (Station Name)
PS 1 (Station Name)
f 5 f 4
P 2
PS 2
PS 2
f 6
f 7 f 8
f 7 f 8
P 3
PS 3
PS 3
f9 f 10
f 11 f 12 f13
f 11 f 12 f13
P 4
PS 4
PS 4
Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.
• If tentative - ASPM operation is repeated intentionally, never memorized (over write) at the same frequecy.
• If tentative - ASPM operation is repeated intentionally, never memorized (over write) at the same frequecy.
1st time ASPM
→
strongest stations of each PI are memorized.
ASPM is not only very usefull for PTY search, but also EON operation.
2nd time ASPM
2nd time ASPM
→
2nd strong stations of each PI are memorized and so on.
PTY search function is equal to FM band search function as a result.
1. Introduction of RDS for CD-DP2500H.
CD-BA2500H RDS function is equal to adding EON feature to the current CD-C75H RDS.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.
NEWS,
AFFAIRS, INFO,
ALARM, TI (TTL 17 kinds)
EON—PTY
EON—TI
Can select and stand-by
Can select and stand-by
EON—PTY and EON—TI are basically stand-by
→
receive the desired program of ON station.
2. The difference point from current CD-C75H RDS. (CD-C75H — CD-DP2500H)
1. PTY item: added TA. (TTL 18 kind.)
2. Each “TP”, “TA” ind. light up or go out individually.
“TA” ind. doesn’t light up on current model, CD-C75H due to none EON—TI.
3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI:
2. Each “TP”, “TA” ind. light up or go out individually.
“TA” ind. doesn’t light up on current model, CD-C75H due to none EON—TI.
3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI:
During EON-TI stand-by
→
Light up
During receiving ON station.
→
blink.
PTY: During EON-PTY stand-by
→
Light up
During receiving ON station.
→
blink.
---
---
↑
↑
CD-DP2500H
– 20 –
EON summary notice for reference
1. EON-TI/PTY
EON stand-by can be set, only when EON ind. lights up.
While EON ind. goes out (NO EON STATION), EON stand-by can't be set.
If the EON button is pressed, then “NO EON” is indication the display.
While EON ind. goes out (NO EON STATION), EON stand-by can't be set.
If the EON button is pressed, then “NO EON” is indication the display.
2. EON-TI/PTY
Even if switch back ON
→
TN station continue to keep EON stand-by.
3. EON-TI
Don’t switch TN
→
ON during TN broadcast TA. (same item)
4. EON-TI/PTY
EON can be cancelled during receiving ON station by pressing EON button if necessary and switch back ON
→
TN.
5. EON-TI/PTY
EON stand-by is perfectly cancelled (cleared) by pressing EON button 2 times during stand-by or power OFF
or Tun Up/Down or change band or recall pre-set CH.
or Tun Up/Down or change band or recall pre-set CH.
6. EON-TI/PTY
After setting EON stand-by, stand-by items can be confirmed by pressing EON button one time.
7. EON-TI/PTY
EON button function: • EON setting
• Confirm stand-by items
• Cancel (ON
• Cancel (ON
→
TN)
• EON clear cancel (2 times)
8. EON-TI/PTY
After setting EON-TI and EON-PTY stand-by, if when EON data is not transmitted, EON ind goes out and
EON stand-by is automatically cancelled display “NO EON”.
EON stand-by is automatically cancelled display “NO EON”.
9. EON-TI
EON-TI stand-by can't be set. When TP=0,TA=0 (TN) even if EON ind. lights up and the EON button is
pressed then “NO TI” is indication the display.
pressed then “NO TI” is indication the display.
10. EON-PTY
Don’t switch TN
→
ON during TN broadcast same specified PTY. (same item of PTY)
11. EON-TI/PTY
Switch TN
→
ON
→
TN station one cycle.
Never switch TN
→
ON1
→
ON2
→
Other net to other net station.
12. EON-TI/PTY
After switch TN
→
ON station. When ON station is NO RDS, NO signal, TA=OFF or different PTY items.
The receiver switch back ON
→
TN displaying “NO READY”.
During receive ON station. when ON station become to be NO RDS, NO signal, TA=ON to OFF or different
PTY item, The receiver switch back ON
PTY item, The receiver switch back ON
→
TN.
13. EON-TI/PTY
Switch TN
→
ON in case of 2 more stations exist, comparing field strength and switch to the strongest station,
if these signals are same strength, switch to the first previous station.
If same frequency as AF'Sexists in the preset memory, then switch TN
If same frequency as AF'Sexists in the preset memory, then switch TN
→
ON (preset memory station) straight.
In case of exist 2 more preset memories of AF’S, then switch to the preset CH which taken in EON DATA
first, also in this case no concern to field strength.
Even if switch TN
first, also in this case no concern to field strength.
Even if switch TN
→
ON preset memory straight, that ON station is very weak signal, then search another
AF'S (ON) station comparing field strength and switch to the strongest station as a result. Of all atations of
AF'S are very weak or no good condition, then, switch back ON
AF'S are very weak or no good condition, then, switch back ON
→
TN automatically display "NO READY".
14. EON-TI/PTY
No linkage volume, power ON/OFF, and switch function.
Traffic Programme code
(TP)
Traffic Announcement code
(TA)
Applications
OFF
OFF
This programme does not carry traffic announcements nor does
it refer, via EON, to a programme that does.
it refer, via EON, to a programme that does.
OFF
ON
This programmecarries EON information about another
programme which gives traffic information.
programme which gives traffic information.
ON
OFF
This programme carries traffic announcements but none are
being broadcast at present and may also carry EON information
about other traffic announcements.
being broadcast at present and may also carry EON information
about other traffic announcements.
ON
ON
A traffic announcement is being broadcast on this programme
at present.
at present.
Click on the first or last page to see other CD-DP2500 (serv.man27) service manuals if exist.