Service Note - Sony DCR-SR21 Service Manual

1-1. POWER SUPPLY DURING REPAIRS
In this unit, about 10 seconds after power is supplied to the battery terminal using the regulated power supply (8.4 V), the power is shut off
so that the unit cannot operate.
These following method is available to prevent this.
Method:
Use the AC power adaptor.
1-2. PRECAUTION ON REPLACING THE VC-611 (F) /(H) BOARD
Turn on the set and establish a USB connection , save the USB serial data before replacing the board.
DESTINATION DATA
When you replace to the repairing board, the written destination data of repairing board also might be changed to original setting.
Start the Adjust Manual in the Adjust Station and execute the "DESTINATION DATA WRITE".
After the board replacement, the error of the built-in recording media may be displayed.
In this case, execute the [DESTINATION DATA WRITE] then the error will be cleared.
If it is not cleared with [DESTINATION DATA WRITE], format the built-in recording media.
USB SERIAL SAVE
When you replace to the repairing board, get the data from the former one.
Start the Adjust Manual in the Adjust Station and perform "USB SERIAL SAVE" to get the data.
USB SERIAL No.
The set is shipped with a unique ID (USB Serial No.) written in it.
This ID has not been written in a new board for service, and therefore it must be entered after the board replacement.
Start the Adjust Manual in the Adjust Station and execute the "USB SERIAL No. INPUT".
DCR-SR21/SR21E/SX21/SX21E_L2

1. SERVICE NOTE

1-3. SELF-DIAGNOSIS FUNCTION
1-3-1. Self-diagnosis Function
When problems occur while the unit is operating, the self-diagnosis func-
tion starts working, and displays on the LCD screen what to do.
This function consists of two display; self-diagnosis display and service
mode display.Details of the self-diagnosis functions are provided in the
Instruction manual.
LCD screen LCD screen
C : 3 1 : 1 1 C : 3 1 : 1 1
C C 3 1 3 1
Repaired by: Repaired by: Block Block
C : Corrected by customer C : Corrected by customer Indicates the appropriate Indicates the appropriate
H : Corrected by dealer H : Corrected by dealer step to be taken. step to be taken.
E : Corrected by service E : Corrected by service E.g. E.g.
engineer engineer
31 ....Reload the tape. 31 ....Reload the tape.
32 ....Turn on power again. 32 ....Turn on power again.
1-1
1-3-2. Self-diagnosis Display
When problems occur while the unit is operating, the counter of the LCD
screen shows a 4-digit display consisting of an alphabet and numbers,
which blinks at 3.2 Hz. This 5-character display indicates the "repaired
by:", "block" in which the problem occurred, and "detailed code"of the
problem.
Blinks at 3.2Hz Blinks at 3.2Hz
1 1 1 1
Detailed Code Detailed Code
Refer to "1-3-3. Self-diagnosis Code Table" . Refer to "1-3-3. Self-diagnosis Code Table" .