Self-Diagnosis Function; Self-Diagnosis Display; Service Mode Display; Display Method - Sony DCR-TRV7 Service Manual

1. Self-diagnosis Function

When problems occur while the unit is operating, the self-diagnosis
function starts working, and displays on the viewfinder 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.
Viewfinder
C : 3 1 : 1 1
C
Repaired by:
C : Corrected by customer
H : Corrected by dealer
E : Corrected by service
engineer
3. Service Mode Display
The service mode display shows up to six self-diagnosis codes shown in the past.

3-1. Display Method

While pressing the "STOP" key, set the switch from OFF to "CAMERA" or "VTR or PLAYER", and continue pressing the "STOP" key for
5 seconds continuously. The service mode will be displayed, and the counter will show the backup No. and the 5-character self-diagnosis
codes.
Viewfinder
[3] C : 3 1 : 1 1
[3]
Backup No.
Order of previous errors

3-2. Switching of Backup No.

By rotating the control dial, past self-diagnosis codes will be shown in order. The backup No. in the [] indicates the order in which the problem
occurred. (If the number of problems which occurred is less than 6, only the number of problems which occurred will be shown.)
[1] : Occurred first time
[2] : Occurred second time
[3] : Occurred third time

3-3. End of Display

Turning OFF the power supply will end the service mode display.
Note: The self-diagnosis display data will be backed up by the coin-type lithium battery. When this coin-type lithium battery is disconnected,
the self-diagnosis data will be lost by initialization.
SELF-DIAGNOSIS FUNCTION
Blinks at 3.2 Hz
3 1 1 1
Block Detailed Code
Indicates the appropriate
step to be taken.
E.g.
31 .... Reload the tape.
32 .... Turn on power again.
Lights up
C : 3 1 : 1 1
self-diagnosis codes
[4] : Occurred fourth time
[5] : Occurred fifth time
[6] : Occurred the last time
— 5 —

2. Self-diagnosis display

When problems occur while the unit is operating, the counter of the
viewfinder 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.
Refer to page 6
Self-diagnosis Code Table.
Control dial