SC-HC17EB, SC-HC17EC, SC-HC17EE, SC-HC17EG - Panasonic Audio Service Manual (repair manual). Page 20

20

Cold Start

 

The [NO DISC] display will appear after 2s,

To display result of self
adjustment for CD.

The [NO DISC] display will appear after 3s,

In Doctor Mode:
Press [

] follow by [1] & then [4] 

button on the remote control of HC25. 
To cancel, press [0] button on remote 
control. It returns Doctor Mode.

To exit Doctor Mode, press 

 but-

ton on main unit or on the remote control 
of HC25.

In Doctor Mode:
Press [

] follow by [1] & then [5] 

button on the remote control of HC25. 
To cancel, press [0] button on remote 
control. It returns Doctor Mode.

To exit Doctor Mode, press 

 but-

ton on main unit or on the remote control 
of HC25.

In Doctor Mode:
Press [SLEEP] button on remote
control. 
To cancel, press [0] button on remote 
control. It returns Doctor Mode.

To exit Doctor Mode, press 

 but-

ton on main unit or on the remote control 
of HC25.

To cancel, press [0] button on remote 
control. It returns Doctor Mode.

To exit Doctor Mode, press 

 but-

ton on main unit or on the remote control 
of HC25.

CD Self-Adjusment 
Display

CD Combination Test

 

To check the open/close 
operation & inner outer disc 
access operation.
1. It fails when CD 
open/close is not completed 
by 4s.
2. The disc access fails in 
10s.
3. The traverse is out of 
focus for more than 2s.

Refer to 8.3.7 for more 
information

To activate cold start upon 
next power up.
(Backup data are initialized)

EEPROM Checksum

To check sum of EEPROM 
for a simplifield ROM 
correction.
1. When EEPROM is not 
detected, the only micro-p’s 
version shall be displayed 
without an EEPROM’s 
check sum

In any mode:
Press

 [    ] 

button on main unit follow by 

[4] & then [7] on the remote control of 
HC25.

EEPROM not detected only firmware is display

Version Display
(DEC)

Check sum
(HEX)

CD Traverse 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 10s 
or the traverse is out of 
focus. for more than 2s

Refer to 8.3.6 for more 
information

In Doctor Mode:
Press [

] follow by [1] & then [2] 

button on the remote control of HC25. 
To cancel, press [0] button on remote 
control. It returns Doctor Mode.

To exit Doctor Mode, press 

 but-

ton on main unit or on the remote control 
of HC25.

The counter will increment by 1 until reach 

99999999