Thursday, November 05, 2015

PANASONIC SA-AKX32PH SERVICE MODE SMPS POWER SUPPLY CIRCUIT AND CLASS D AMPLIFIER CIRCUIT - PANASONIC AUDIO SYSTEM

PANASONIC SA-AKX32PH 

SERVICE MODE SMPS POWER SUPPLY CIRCUIT AND CLASS D AMPLIFIER CIRCUIT 

Self-Diagnostic and Special Mode Setting
Cold-Start
Here is the procedure to carry out cold-start or initialize to shipping mode.
1. Unplug AC power cord
2. Press & hold [POWER] button
3. Plug AC power cord while [POWER] button being pressed
4. Release [POWER] button
Doctor Mode
1.In CD Mode:
Press [ STOP ] button on main unit follow by [4] and [7] on remote control.
2.To exit, press [OK] button on remote control or press [POWER] button on main  unit or remote control.
Micro-P Version Display
In Doctor Mode: 1.Press [2] button on remote control.
Cold Start
To active cold start upon next AC power up when reset start is execute the next time.
In Doctor Mode Press [DISPLAY/-DIMMER] button on remote control.
Volume Setting Check
To check the volume setting of a main unit.
In Doctor Mode Press [7],[8],[9], [PLAY MENU/RADIO MENU] button on remote control.
FL Display Check
To check the FL segment display All segment will light up while all LED blink at 0.5s,intervals.(if any)
In Doctor mode Press [1] button on remote control.
CD Open Check
To excute CD Open operation.
In Doctor mode Press [DEL] button on remote control.
BRS1C Reliability Test (Traverse)
To determine CD Mechanism BRS1C Access Inner & Outer disc operation.
In this mode,ensure the CD is in the main unit.
In Doctor Mode:
1. Press [10] [1] [2] button on remote control.
2. To cancel, press [0] on remote control.
BRS1C Reliability Test (Combination)
To determine CD Mechanism Unit(BRS1C) Open/Close & Access Inner & Outer Disc Operation.
In this mode,ensure the CD is in the main unit.
In Doctor Mode:
1. Press [10] [1] [5] button on remote control.
2. To cancel, press [0] on remote control.
BRS1C Reliability Test (Loading)
In this mode, the tray will open & close.
To determine CD Mechanism Unit (BRS1C) Open/Close operation.
In Doctor Mode:
1. Press [10] [2] [1] button on remote control.
2. To cancel, press [0] on remote control.
Self-Diagnostic Mode
Service Mode
To enter into Service Mode
In CD Mode:
1.Press and hold [ STOP ] button on main unit for 2 secs.
2.Do not release [ STOP ] button, press
and hold [ FORWARD /NEXT  ] on the remote control for 2 secs.
3.To exit, press [POWER] button on main unit.
Error Code History
Checking the records for Error Code.
If there’s no error code.Display will remain as [T]
In Service Mode:
1.Press button [1] on remote control.
2.To clear history,press & hold [0] for
5 seconds or more
Software Display Version.
To check for following:
1)System Version.
2)Jupiter Micro-processor Version.
3) Opecon Version.
In Service Mode:
1.Press button [2] on remote control.
Display of AD value of main body key
To check the AD input value
In Service Mode:
1.Press button [ 4 ] on remote control for 2 secs.
USB Error Code History
To check for USB error Codes.
In Service Mode:
1.Press button [5] on remote control.
2.To clear history,press & hold [0] for
5 seconds or more.
CD Mechanism Error Code Table
Error Code
Description Of error

CD H15




During operation
POS_SW_R On fail to be
detected with 4 sec. Error
No. shall be clear by force
or during cold start.


CD H16




During operation
POS_SW_CEN On fail to
be detected with 4 sec.
Error No. shall be clear by
force or during cold start.


F26
During switch to CD func
tion, if SENSE = “L” within
failsafe time of 20ms.

Entering into sales Demo Mode
Here is the procedures to enter into Sales Demonstration Lock.
Step 1: Turn on the unit.
Step 2: Select to any mode function, press and hold [ OPEN/CLOSE] key and follow by [PLAY /STOP ] key pressed within 0.5 sec.
Step 3: Hold both [ OPEN/CLOSE] and [ PLAY/STOP ] keys for 5 sec.
Step 4: The display will show upon entering into this mode.
Cancellation
Step 1: To cancel only can be triggered in CD Mode and Volume 19.
Step 2: Press and hold [ OPEN/CLOSE] key and follow by [PLAY /STOP ] key pressed within 0.5 sec.
Step 3: Hold both [ OPEN/CLOSE] and [ PLAY/STOP ] keys for 5 sec.
Step 4: The display will show after exit from this mode.
 POWER SUPPLY CIRCUIT 

CLASS D AUDIO AMPLIFIER CIRCUIT 

SMPS PART DESCRIPTION