Power
Supply Circuit Diagram – Digital Power Amplifier Circuit Diagram - Service Mode
– Initialize – Version check – Key Check – SONY STR-KS380 AV Receiver.
Used ICs: STR-F6168-LF1352 or STR-F6138-LF1352 – STR-V153 – CXD9981TN
(Digital Power Amplifier)
POWER OUTPUT (rated)
FRONT L + FRONT R 108 W + 108 W (at 3 ohms, 1 kHz, 1% THD)
POWER OUTPUT (reference) FRONT L/FRONT R/CENTER/SUR L/ SUR R 167 W (per channel at 3 ohms, 1 kHz)
SUBWOOFER 165 W (at 3 ohms, 60 Hz)
Inputs
Analog Sensitivity: 1 V/50kohms
Digital (Coaxial): Impedance: 75 ohms
FRONT L + FRONT R 108 W + 108 W (at 3 ohms, 1 kHz, 1% THD)
POWER OUTPUT (reference) FRONT L/FRONT R/CENTER/SUR L/ SUR R 167 W (per channel at 3 ohms, 1 kHz)
SUBWOOFER 165 W (at 3 ohms, 60 Hz)
Inputs
Analog Sensitivity: 1 V/50kohms
Digital (Coaxial): Impedance: 75 ohms
CND : Canadian model
AR : Argentina model
EXPLODED VIEWS
HOW TO ENTER THE SERVICE MODE
> Press [POWER] button to turn the power on.
> Press the button in order of [TUNER] > [RETURN] > [ENTER] > hold [SHIFT] button ([0] > [1] > [0]) > [SOUND FIELD +]
> The message “SERVICE” appears.
> Press [ENTER] > hold [SHIFT] button ([X]*>[X]*) > [ENTER], selected test mode will activated. *[X] refer to test code.
> Press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu. Repeat step 4 to re-enter test mode.
> Repeat step 2 to turn off service menu.
> Press the button in order of [TUNER] > [RETURN] > [ENTER] > hold [SHIFT] button ([0] > [1] > [0]) > [SOUND FIELD +]
> The message “SERVICE” appears.
> Press [ENTER] > hold [SHIFT] button ([X]*>[X]*) > [ENTER], selected test mode will activated. *[X] refer to test code.
> Press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu. Repeat step 4 to re-enter test mode.
> Repeat step 2 to turn off service menu.
VERSION
* While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
* Press [ENTER] > hold [SHIFT] button ([0] > [3]) > [ENTER].
* The message of model name, destination, and software version are displayed.
* Each time press [DISPLAY] button, the message “H.VER x.xx” and “SVER x.xx” appear one after another and return to model name, destination, and software version.
* While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
* Press [ENTER] > hold [SHIFT] button ([0] > [3]) > [ENTER].
* The message of model name, destination, and software version are displayed.
* Each time press [DISPLAY] button, the message “H.VER x.xx” and “SVER x.xx” appear one after another and return to model name, destination, and software version.
HISTORY MODE
> While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
> Press [ENTER] > hold [SHIFT] button ([1] > [3]) > [ENTER].
> The message “HISTORY” appears.
> Each time the [▲/▼] button on the remote commander is pressed, the item is switched in order as follows.
> While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
> Press [ENTER] > hold [SHIFT] button ([1] > [3]) > [ENTER].
> The message “HISTORY” appears.
> Each time the [▲/▼] button on the remote commander is pressed, the item is switched in order as follows.
FL CHECK
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([0] > [4]) > [ENTER].
ALL segments light on.
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([0] > [4]) > [ENTER].
ALL segments light on.
KEY CHECK
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [0]) > [ENTER].
The message “REST 03” appears. “REST 03” value decrease whenever a button on the set is pressed. However, once a button has been pressed, it is no longer taken into account. All buttons on the set is pressed, “REST 00” is displayed.
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [0]) > [ENTER].
The message “REST 03” appears. “REST 03” value decrease whenever a button on the set is pressed. However, once a button has been pressed, it is no longer taken into account. All buttons on the set is pressed, “REST 00” is displayed.
All preset contents are cleared when this mode is activated. Use this mode
before returning the product to clients upon completion of repair.
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [2]) > [ENTER]
The message “CLEARED” appears, the set turns off.
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [2]) > [ENTER]
The message “CLEARED” appears, the set turns off.
SP OUT (MIC Test)
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [8]) > [ENTER].
The message “MIC” appears.
Repeat step 1 and 2 to toggle between “MIC” and “SOURCE”.
SOURCE : normal mode
MIC IN : mode that output audio from mic input.
While still in the Service Mode, press [AMP MENU] > [DISPLAY] to return to “SERVICE” menu.
Press [ENTER] > hold [SHIFT] button ([1] > [8]) > [ENTER].
The message “MIC” appears.
Repeat step 1 and 2 to toggle between “MIC” and “SOURCE”.
SOURCE : normal mode
MIC IN : mode that output audio from mic input.
INITIALIZE
> Turn off the receiver.
> Hold the [Power] for 5 seconds.
> The message “CLEARING” appears on the display.
> After a few seconds, “CLEARED” appears.
> Turn off the receiver.
> Hold the [Power] for 5 seconds.
> The message “CLEARING” appears on the display.
> After a few seconds, “CLEARED” appears.
DIGITAL POWER AMPLIFIER CIRCUIT DIAGRAM
SMPS CIRCUIT DIAGRAM & PWB
CLICK ON THE PICTURES TO MAGNIFY
