DOWNLOAD Sharp CD-C470E (serv.man3) Service Manual ↓ Size: 2.94 MB | Pages: 76 in PDF or view online for FREE

Model
CD-C470E (serv.man3)
Pages
76
Size
2.94 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
cd-c470e-sm3.pdf
Date

Sharp CD-C470E (serv.man3) Service Manual ▷ View online

– 13 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
SP out
L-ch
Input signal is output.
(SO901)
R-ch
Input signal is output.
(SO903) SP out C-ch
SP cut, no output
(SO902) 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)
(SO903) SP out C-ch Input signal is output.
(SO902) 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
IC202
16 pin L-out
Output enabled state
Output enabled state
Output enabled state
15 pin R-out
Output enabled state
Output enabled state
Output enabled state
IC201
 34pin C-out
No output
Output enabled state
No output
IC202
13pin  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 (Q504) state
Output enabled state
No output in MUTE (Q504) state
(SO903)
SP OUT S-ch
No output in MUTE (Q503) state
Output enabled state
Output enabled state
(SO902)
EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD
Test tone output
• 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.
      
 →
TEST
 →
L-ch
 →
C-ch
                
  ↑
                ↓
            
S-ch
 ←
 R-ch
• Pro Logic ON Phantom mode
   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).
   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.
• 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.
• 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
 
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
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)
(SO903) SP out C-ch
Almost no output (only omitting component)
(SO902) 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)
(SO903) SP out C-ch
SP cut, no output
(SO902) 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.
   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-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 14 –
RDS
1.  RDS Function
PI
ASPM
PS
STATION NAME
PTY
PTY SEARCH
PTY(31)
EON TI (TA)
STAND-BY MODE
EON-PTY
EON-TI/PTY
EON-AF
With EON-AF
TP
ind.
TA
ind.
2.  DISPLAY and control buttons
Select and search (18 kind items) by cyclic
NEWS-AFFAIRS  ------  OTHER M - ALARM - TP - TA
Select and stand-by (17 kind items) by cyclic
NEWS-AFFAIRS  ------  OTHER M - ALARM - TI
RDS
EON
TA TP
PTY TI
DISPLAY
8 character can display E1 table of EBU.
Same as CD-C75H.
Lights up when RDS with EON station is received.
Lights up when RDS station is received.
Lights up when TA station is received.
Lights up when TP station is received.
Lights up when stand-by mode and blinks during staying other network
station.
ASPM
DISPLAY PTY•TI
SEARCH
SET
PTY•TI
SELECT
EON
PTY and TI  items can be
selected when use PTY search
or EON STAND-BY
Can use for
• EON setting
• confirm stand-by item
• cancel (ON
TN)
• EON clear cancel
18 kind
(contain TP, TA)
17 kind
(contain TI)
Note:
TP and TA ind. are different from CD-C75H.
TP, TA ind. can light up individually, when TP: OFF and TA: ON, it means that EON-TI can be used, in case of TP=OFF,
TA=OFF, EON-Ti can't be used.
In case of CD-C75H, (TP: OFF and TA: ON) disregard (ignore) this case, because EON-TI is nothing.
AF: Alternative Frequencycies
– 15 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
No
ASPM, summary operation
Hold down the 
ASPM button for 3 more second.
“ASPM” blinks in the display
.
Preset CH memory full over?
No operate. 
After displayed “END”. Return to
previous station.
SD (TUNE) DET out OK?
If count 1st OK?
If count 2nd OK?
RDS signal or not?   PI—identify
Comparing PI cord same or not?
between current receiving PI and
before PI which is already memorized
by 
ASPM on this time.
Comparing freg. same or not?
between current receiving frequency
and (already) previously memorized
frequency
.
Memorized to the lowest
vacant preset channel.
Preset CH memory become full over?
Begin to 
ASPM SCAN from the next
CH-SP
AN 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
.
Displayed the 
TTL
 quantity of memo-
rized stations by 
ASPM operation on
this time. 
And return to the previous
receiving freq. automatically
.
Ye
s
No
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
No
Ef
fect
Pass
No ef
fect
Pass
No ef
fect
Pass
No ef
fect
Pass
No ef
fect
Ye
s
No
Ye
s
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?
Ye
s
No ef
fect
No
No ef
fect
Comparing freg. same or not?
Between current receiving frequency
and (already) previously memorized
frequency
.
Ye
s
Memorized to the lowest
vacant preset channel.
Ye
s
No ef
fect
Begin to scan start 87.50 
→ 
108.00 MHz
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 16 –
4. No adjust type (None adjusting circuit.)
5. Added EON button.
6. Need to change RDS logo due to add EON feature.
7. Added EON—TI, EON—PTY function.
3. Summary of CD-C470H/CD-C480H 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.
EON—TI:
Select and set the “TI” 
→ 
stand-by 
→ 
switch to ON station at the start of traffic announcement automati
cally 
→ 
stay and listen to TA of ON station 
→ 
switch back to TN station autmatically at the end of TA(ON).
ie after TA(ON) is over or cancelled to receive TA of ON station midway.
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 reciver
switches straight to that ON station(CH), without comparing field strength so can make a quick switching from TN—ON sta
tion. 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-C470H/CD-C480H’s 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
PI code.
Same PI code —  freq: different
   (AF’S)
      PS: same
      PTY: same
Each PI has AF’S list by individually.
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
P 1 (PI cord)
PS 1 (Station Name)
f 5
f 4
P 2
PS 2
     f 6
f 7
f 8
P 3
PS 3
f 9
f 10
f 11  f 12  f13
P 4
PS 4
  Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.
• If tentative - ASPM operation is repeated intententionally, 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 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-C470H
CD-C470H/CD-C480H 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.
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-C470H/CD-C480H)
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:
During EON-TI stand-by 
 Light up
During receiving ON station. 
 blink.
    PTY: During EON-PTY stanb-by 
 Light up
During receiving ON station. 
 blink.
---
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