Sony DCR-TRV738E Service Manual page 128

DCR-TRV738E/TRV740/TRV740E/TRV840
4-3. SERVICE MODE
Note: Before performing the adjustments, check the data of page : 0,
address: 10 is "00". If not, set data: 00 to this address.
Additional note on adjustment
Note1: After the completion of the all adjustments, cancel the service
mode by either of the following ways.
1) After data on page: C and D is restored, unplug the main power
supply and remove the coin lithium battery. ( In this case, date
and time and menu setting have been set by users are canceled.
Perform resetting.)
2) After data on page: C and D is restored, select page: 0, address:
01, and return the data to 00. And when data on page:2 and 3
are changed, return data to the original condition.
Note2: Before performing the adjustments, check the data of page: 0,
address: 10 is "00". If not, set data: 00 to this address.
1. Setting the Test Mode
Page C
Data
00 Normal
01 Test mode
Various emergency prohibitions and releases
Drum emergency, capstan emergency, loading motor
emergency, reel emergency, tape top and end, DEW
detection
Page D
Data
00 Normal
01 Forced camera power ON
02 Forced VTR power ON
• Before setting the data , select page: 0, address: 01, and set data:
01.
• For page C and D, the data set will be recorded in the non-volatile
memory by pressing the PAUSE button of the adjustment remote
commander. In this case, take note that the test mode will not be
exited even when the main power is turned off (8.4Vdc).
• After completing adjustments/repairs, be sure to return the data
of page: C address: 3E to 00, and the data of page: D address: 10
to 00, and press the PAUSE button of the adjustment remote
commander. And select page: 0, address: 01, and set data: 00.
Address 3E
Function
Address 10
Function
2. Emergence Memory Address
Page C
Address
F4 EMG code when first error occurs
F6 Upper: MSW code when shift starts when first error
occurs
Lower: MSW code when first error occurs
F7 Lower: MSW code to be moved when first error
occurs
F8 EMG code when second error occurs
FA Upper: MSW code when shift starts when second
error occurs
Lower: MSW code when second error occurs
FB Lower: MSW code to be moved when second error
occurs
FC EMG code when last error occurs
FE Upper: MSW code when shift starts when last error
occurs
Lower: MSW code when last error occurs
FF Lower: MSW code to be moved when last error
occurs
When no error occurs in this unit, data "00" is written in the above
addresses (F4 to FF). when first error occurs in the unit, the data
corresponding to the error is written in the first emergency address
(F4 to F7). In the same way, when the second error occurs, the data
corresponding to the error is written in the second emergency address
(F8 to FB).
Finally, when the last error occurs, the data corresponding to the
error is written in the last emergency address (FC to FF).
Note : After completing adjustments, be sure to initialize the data of
addresses F4 to FF to "00".
Initializing method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 37, and press the PAUSE
button.
3) Select page: 0, address: 01, and set data: 00.
2-1. EMG Code (Emergency Code)
Codes corresponding to the errors which occur are written in C
page, addresses F4, F8 and FC. The type of error indicated by the
code are shown in the following table.
Code
00 No error
10 Loading motor emergency during loading
11 Loading motor emergency during unloading
22 T reel emergency during normal rotation
23 S reel emergency during normal rotation
T reel emergency (Short circuit between S reel
24
terminal and T reel terminal)
30 FG emergency at the start up of the capstan
40 FG emergency at the start up of the drum
42 FG emergency during normal rotation of the drum
5-62
Address F4 to FF
Contents
Emergency Type