Sony CMT-SP55MD / CMT-SP55TC / TA-SP55 Service Manual ▷ View online
1
AEP Model
UK Model
E Model
SPECIFICATIONS
SERVICE MANUAL
MICRO Hi-Fi COMPONENT SYSTEM
TA-SP55
TA-SP55 is the amplifier section
in CMT-SP55MD or CMT-SP55TC.
in CMT-SP55MD or CMT-SP55TC.
European model:
DIN power output (Rated): 25 + 25 watts (8 ohms at 1 kHz,
DIN, 230 V)
Continuous RMS power output (Reference):
30 + 30 watts (8 ohms at 1 kHz,
10% THD, 230 V)
10% THD, 230 V)
Music power output (Reference):
75 + 75 watts
General
Power requirements
European model:
European model:
230 V AC, 50/60 Hz
Other models:
110 – 120 V or 220 – 240 V
AC, 50/60 Hz
AC, 50/60 Hz
Power consumption
70 watts
Dimensions (w/h/d)
Mass
Mass
Approx.
Approx. 202
x
101
x
306 mm
3.9 kg
Design and specifications are subject to change
without notice.
without notice.
Other models:
DIN power output (Rated): 25 + 25 watts (8 ohms at 1 kHz,
DIN, 240 V)
22 + 22 watts (8 ohms at 1 kHz,
DIN, 220 V)
22 + 22 watts (8 ohms at 1 kHz,
DIN, 220 V)
Continuous RMS power output (Reference):
30 + 30 watts (8 ohms at 1 kHz,
10% THD, 240 V)
28 + 28 watts (8 ohms at 1 kHz,
10% THD, 220 V)
10% THD, 240 V)
28 + 28 watts (8 ohms at 1 kHz,
10% THD, 220 V)
Output
PHONES (stereo phono jack):
PHONES (stereo phono jack):
accepts headphones of 8 ohms or
more.
more.
2
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
TABLE OF CONTENTS
1. SERVICE NOTE
............................................................... 3
2. GENERAL
......................................................................... 4
3. DISASSEMBLY
3-1. Case ..................................................................................... 5
3-2. Front Panel Assy ................................................................... 5
3-3. HP Board, Panel Board ......................................................... 6
3-2. Front Panel Assy ................................................................... 5
3-3. HP Board, Panel Board ......................................................... 6
4. DIAGRAMS
4-1. Block Diagram ...................................................................... 9
4-2. Printed Wiring Board – Main Section – .............................. 10
4-3. Schematic Diagram – Main Section – ................................ 11
4-4. Printed Wiring Board – Panel Section – ............................. 12
4-5. Schematic Diagram – Panel Section – ................................ 13
4-6. Printed Wiring Board – VOLSEL Section – ....................... 14
4-2. Printed Wiring Board – Main Section – .............................. 10
4-3. Schematic Diagram – Main Section – ................................ 11
4-4. Printed Wiring Board – Panel Section – ............................. 12
4-5. Schematic Diagram – Panel Section – ................................ 13
4-6. Printed Wiring Board – VOLSEL Section – ....................... 14
5. EXPLODED VIEWS
5-1. Case and Front Panel .......................................................... 15
6. ELECTRICAL PARTS LIST
........................................ 16
MODEL IDENTIFICATION
MODEL
PARTS No.
AEP, AED, UK model
4-229-700-0s
MY, SP model
4-229-700-2s
HK model
4-229-700-3s
KR model
4-229-700-4s
• Abbreviation
AED : North European model
MY : Malaysia model
SP
MY : Malaysia model
SP
: Singapore model
HK
: Hong Kong model
KR
: Korea model
Parts No.
3
CD Text Display
• This unit displays CD text.
Text is displayed for the first 50 track only and will not be displayed from the 51st track onwards. Do not suspect a fault in this case.
In some cases, some special characters will not be displayed and may be replaced by other characters. Do not suspect a fault in this case.
In some cases, some special characters will not be displayed and may be replaced by other characters. Do not suspect a fault in this case.
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. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and ML buttons (CDP) together.
2. “COLD RESET” is displayed on the fluorescent indicator tube and reset is executed.
1. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and ML buttons (CDP) together.
2. “COLD RESET” is displayed on the fluorescent indicator tube and reset is executed.
Hot Reset
• This mode reset the preset data kept in the memory. The hot reset mode functions same as if the power cord is plugged in and out.
Procedure :
1. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and lm buttons (CDP) together.
2. Turn off the unit and reset is executed.
1. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and lm buttons (CDP) together.
2. Turn off the unit and reset is executed.
GC Test Mode
Procedure :
1. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and PLAY MODE buttons (CDP)
1. When the power ON, press the ?/1 button (TA) while pressing the TUNING MODE button (ST) and PLAY MODE buttons (CDP)
together.
2. Fluorescent indicator tube are all turned on.
3. Press TUNING MODE button (ST) to enter the model destination indecation mode. “SP55 CE2” appears.
4.
3. Press TUNING MODE button (ST) to enter the model destination indecation mode. “SP55 CE2” appears.
4.
Every pressing of TUNING MODE button (ST) changes the display in the following order.
MC Version
MC Version
t CD Version t ST Version t TC Version t TA Version t TM Version t model destination display.
5.
Press DISPLAY button (ST) and the date appears as “ 00615a ”
Every pressing of DISPLAY button (ST) changes the display in the Version display and model destination display.
Every pressing of DISPLAY button (ST) changes the display in the Version display and model destination display.
6. Press TUNER/BAND button (ST) to enter the key check mode.
7. In the key check mode, the fluorescent indicator tube displays “Key 0 Vol 0”. Each time a button is pressed, “Key” value increases.
7. In the key check mode, the fluorescent indicator tube displays “Key 0 Vol 0”. Each time a button is pressed, “Key” value increases.
However, once a button is pressed, it is no longer taken into account.
“Vol” Value increases like “1, 2, 3 ...” if rotating VOLUME knob (TA) in the clockwise direction, or decreases like “0, 9, 8 ...” if rotating
in the counterclockwise diretion.
“Vol” Value increases like “1, 2, 3 ...” if rotating VOLUME knob (TA) in the clockwise direction, or decreases like “0, 9, 8 ...” if rotating
in the counterclockwise diretion.
8. To exit from this mode, press three buttons in the same procedure as step 1, or disconnect the power cord.
SECTION 1
SERVICING NOTE
MC Test Mode
Procedure :
1. When the power ON, press the ?/1 button (TA) while pressing TUNING MODE button (ST) and REPEAT button (CDP) together.
2. Frame of the MD mark and the CD mark flash, and “BASS/TRE FLAT” appears for a moment.
3. When the VOLUME knob (TA) is turned clockwise, “VOLUME MAX” appears for a moment.
4. When the VOLUME knob (TA) is turned counterclockwise, “VOLUME MIN” appears for a moment.
5. Select the function “TAPE” using the FUNCTION knob (TA).
1. When the power ON, press the ?/1 button (TA) while pressing TUNING MODE button (ST) and REPEAT button (CDP) together.
2. Frame of the MD mark and the CD mark flash, and “BASS/TRE FLAT” appears for a moment.
3. When the VOLUME knob (TA) is turned clockwise, “VOLUME MAX” appears for a moment.
4. When the VOLUME knob (TA) is turned counterclockwise, “VOLUME MIN” appears for a moment.
5. Select the function “TAPE” using the FUNCTION knob (TA).
Set the test tape AMS-110A or AMS-120.
6. Press DIRECTION button (TC) to enter either “j” (loop) or “h” (two way).
7. Press the CD SYNC REC button (TC) to start the AMS test.
7. Press the CD SYNC REC button (TC) to start the AMS test.
8. Number of AMS signals is counted during the AMS test and the message “EDG#” (# means a number) appears. When the test tape
either AMS-110A or AMS-120 is used, the AMS signal is detected twice before shut off.
9. When the AMS test ends, either “OK” or “NG” appears.
10. To exit the MC test mode, either press the ?/1 button (TA)or perform the cold reset as described above.
10. To exit the MC test mode, either press the ?/1 button (TA)or perform the cold reset as described above.
(FWD) REW
(Shut off)
(FWD) FF AMS
(FWD) REW AMS
END
(Shut off)
(Shut off)
This unit cannot be repaired by itself.
When repairing, connect the whole system except for the speaker.
When repairing, connect the whole system except for the speaker.
4
SECTION 2
GENERAL
12
3
4
5
8
7
6
FRONT PANEL
This section is extracted from
instruction manual.
instruction manual.
8
Step 2: Setting the time
Y
ou must set the time beforehand to use the timer
functions.
The clock is on a 24-hour system for the European
model, and a 12-hour system for other models.
The 24-hour system is used for illustration
purposes.
Set the time before turning on the system.
`/1
1
2,3
2,3
2,3
1
Press CLOCK/TIMER SET while the
system is of
f.
The hour indication flashes.
2
Press
.
or
>
to set the hour
,
then
press ENTER/YES.
The minute indication flashes.
3
Press
.
or
>
to set the minute,
then press ENTER/YES.
The clock starts.
If y
ou made a mistake
Start o
v
er from step 1.
T
o
c
hang
e the preset time
Y
ou can change the preset time while the system
is on.
1
Press CLOCK/TIMER SET
.
2
Press
.
or
>
repeatedly until
“SET
CLOCK
” appears, then press ENTER/YES.
3
Repeat steps 2 and 3.
Tips
•
The b
uilt-in clock sho
ws the time in the display
while the system is of
f. If you press DISPLA
Y at
this time, the display back light lights up, making
the clock easier to see.
•
The upper dot of the colon flashes for the f
irst 30
seconds, and the lo
wer dot flashes for the last 30
seconds of each minute.
1
STANDBY indicator
2
@/1 button
3
DSG ON/OFF button and indicator
4
VOLUME knob
5
FUNCTION knob
6
DSG FREQUENCY HIGH knob
7
DSG FREQUENCY LOW knob
8
PHONES jack