Panasonic SC-EN38E / SC-EN38EB / SC-EN38EG (serv.man2) Service Manual ▷ View online
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Volume Setting
Mode
Mode
To check for the volume setting of the
main unit. The volume will be
automatically set to its respective
level (in dB). During the mode,
treble/bass/EQ will be set to “0” dB &
OFF.
main unit. The volume will be
automatically set to its respective
level (in dB). During the mode,
treble/bass/EQ will be set to “0” dB &
OFF.
In doctor mode:
1. Press [7] button on remote control.
1. Press [7] button on remote control.
2. Press [8] button on remote control.
3. Press [9] button on remote control.
To exit, press [
To exit, press [
] button on
main unit or remote control.
CD Loading Test
Mode
Mode
To determine the reliability of CD
Loading unit.
To check for the Open/Close
operation for the CD loading unit. It
fails when there is abnormality in
opening or closing.
Loading unit.
To check for the Open/Close
operation for the CD loading unit. It
fails when there is abnormality in
opening or closing.
The counter will increment by 1 until reach
9999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [1] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Traverse Unit
Test Mode
Test Mode
To check for the traverse unit
operation. In this mode, the first & last
track is access & read. (TOC). It fails
when TOC is not completed by IOS or
the traverse is out of focus.
operation. In this mode, the first & last
track is access & read. (TOC). It fails
when TOC is not completed by IOS or
the traverse is out of focus.
The counter will increment by 1 until reach
9999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [2] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Combination
Test Mode
Test Mode
A combination of CD loading &
traverse unit test.
traverse unit test.
The counter will increment by 1 until reach
9999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [3] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Auto
Adjustment
Display
Adjustment
Display
To display result of self adjustment for
CD.
For more information, please refer to
Section 8.2.1.
CD.
For more information, please refer to
Section 8.2.1.
The [NO DISC] display will appear after 3s,
In doctor mode:
1.
1.
Press [
], [1] & [4] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
Cold Start
To activate cold start upon next AC
power up.
power up.
The [NO DISC] display will appear after 3s,
In doctor mode:
1.
1.
Press [SLEEP] button on remote
control.
control.
To exit, press [
] button on
main unit or remote control.
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SC-EN38E / SC-EN38EB / SC-EN38EG
Item
FL Display
Key Operation
Mode Name
Description
Front Key
USB Test Mode
To Inspect USB Testing.
The display will appear after 3s,
In doctor mode:
1.
1.
Select [USB
] for USB mode.
2.
Press [2] button on remote control.
To exit, press [
] button on
main unit or remote control.
8.2.1. CD Self-Adjustment (AJST) Result Display
Purpose: To display result of self-adjustment for CD.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.2 on key operation to enter into this mode).
Step 2: When [
], [1] & [4] are pressed at the doctor mode, the following shall be displayed for 3s. The result shall correspond
to the condition met as shown in the table below:
8.3. Error Code Table 1
8.3.1. Mechanism Error Code Table
Self-Diagnosis Function provides information on any problems occuring for the unit and its respective components by displaying
error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared.
error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared.
The error code is automatically display after entering into self-diagnostic mode.
Error Code
Diagnosis Contents Description of error
Automatic FL Display
Remarks
F15
CD
REST
SW
abnormal
CD
traverse
position
initial setting operation
fail-safe
fail-safe
counter
(1000ms)
waiting
for
REST SW to turn on.
Error no. shall be clear
by force or during cold
start.
Error no. shall be clear
by force or during cold
start.
For CD unit.(For traverse).
Press [ ] on main unit for next error.
Press [ ] on main unit for next error.
H15
CD OPEN SW
abnormal
abnormal
During normal operation,
if CD OPEN SW ON is
not detected
if CD OPEN SW ON is
not detected
within 4
sec, and then H15 shall
be memorized. The error
code can be cleared only
at the start up of micro-p
after reset.
be memorized. The error
code can be cleared only
at the start up of micro-p
after reset.
For CD unit.(For traverse).
Press [ ] on main unit for next error.
Press [ ] on main unit for next error.
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SC-EN38E / SC-EN38EB / SC-EN38EG
Error Code
Diagnosis Contents Description of error
Automatic FL Display
Remarks
F26
Communication
between CD servo
LSI and micro-p
abnormal.
between CD servo
LSI and micro-p
abnormal.
CD
function
DTMS
command, after system
setting, if SENSE = “L”
cannot
setting, if SENSE = “L”
cannot
be
detected.
Memory
shall
contain
F26code.
After
power
on, CD function shall
continue, error display
shall
continue, error display
shall
be
“NO
DISC”.
Error no. shall be clear
by force or cold start.
by force or cold start.
For CD unit.(For traverse).
Press [
Press [
] on main unit for next error.
F76
Abnormality in the
output voltage of
stabilized power
supply.
output voltage of
stabilized power
supply.
In
normal
operation
when
“DCDET”
is
detected “L” (IOIO) for
two consecutive times,
this error code will be
displayed for 2s & after
PCONT will be turned to
“L” (Low).
two consecutive times,
this error code will be
displayed for 2s & after
PCONT will be turned to
“L” (Low).
Press [ ] on main unit for next error.
19
SC-EN38E / SC-EN38EB / SC-EN38EG
9 Assembling and Disassembling
9.1. Caution
“ATTENTION SERVICER”
Be careful when disassembling and servicing.
Some chassis components may have sharp edges.
Special Note:
1. This section describes the disassembly procedures for all the major printed circuit boards and main components.
2. Before the disassembly process was carried out, do take special note that all safety precautions are to be carried out.
(Ensure that no AC power supply is connected during disassembling.)
3. For assembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
4. Do take note of the locators on each printed circuit board during reassembling procedures.
5. The Switch Regulator IC may have high temperature after prolonged use.
6. Use caution when removing the top cabinet and avoid touching heat sinks located in the unit.
7. Select items from the following index when checks or replacement are required.
• Disassembly of Rear Panel
• Disassembly of Transformer P.C.B., AC Inlet P.C.B. & Transformer
• Disassembly of Option Port P.C.B.
• Disassembly of USB P.C.B.
• Disassembly of Tuner P.C.B.
• Disassembly of Main P.C.B.
• Replacement of Voltage Regulator IC (IC501)
• Replacement of Voltage Regulator IC (IC502)
• Replacement of Voltage Regulator Transistor (Q501)
• Replacement of Power AMP IC (IC700)
• Replacement of Regulator Transistor (Q502)
• Disassembly of Tact Switch & Sensor P.C.B.
• Disassembly of CD Mechanism Unit
• Disassembly of Traverse Cover
• Disassembly of CD Servo P.C.B.
• Disassembly of Motor Unit & Motor P.C.B.
• Disassembly of Ipod Cradle P.C.B.
• Disassembly of Panel & LED P.C.B.
• Disassembly of Detector P.C.B.
• Disassembly of CD Lid
• Disassembly of Docking Lid
• Disassembly of Function Lid Ass’y
• Disassembly of Speaker
• Disassembly of Transformer P.C.B., AC Inlet P.C.B. & Transformer
• Disassembly of Option Port P.C.B.
• Disassembly of USB P.C.B.
• Disassembly of Tuner P.C.B.
• Disassembly of Main P.C.B.
• Replacement of Voltage Regulator IC (IC501)
• Replacement of Voltage Regulator IC (IC502)
• Replacement of Voltage Regulator Transistor (Q501)
• Replacement of Power AMP IC (IC700)
• Replacement of Regulator Transistor (Q502)
• Disassembly of Tact Switch & Sensor P.C.B.
• Disassembly of CD Mechanism Unit
• Disassembly of Traverse Cover
• Disassembly of CD Servo P.C.B.
• Disassembly of Motor Unit & Motor P.C.B.
• Disassembly of Ipod Cradle P.C.B.
• Disassembly of Panel & LED P.C.B.
• Disassembly of Detector P.C.B.
• Disassembly of CD Lid
• Disassembly of Docking Lid
• Disassembly of Function Lid Ass’y
• Disassembly of Speaker
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SC-EN38E / SC-EN38EB / SC-EN38EG
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