Board)); Service Mode; Checking Item - Sony RDR-GX300 Service Manual

This is the diagnostics to define the faulty position.
The diagnostics can be executed using the remote commander (Remote Control Mode 3) and monitor.
To execute the service mode, connect the VIDEO OUT (L2 OUT) connector to the monitor.
Connect the AC power cord to the power outlet.
A message, "WELCOME" appears on the display panel of the main unit.
Keep holding down the "REC PAUSE", "SYSTEM MENU" and "TOOLS" keys, of the main unit (about 10 seconds) until the screen appears
on the monitor display.
Either "OK" or "NG" appears on the monitor screen while the diagnostics is in progress.
You can judge the respective device or its peripheral from the message of either "OK" or "NG" on the monitor screen.
When an abnormality is detected, the diagnostics is stopped at that moment and you can select to proceed the diagnostics or to stop it.
Use the keys on the front panel of the main unit to operate the diagnostics.
6-1.

Checking Item

Checking item IC name
GPS 3 IC CXD9778R
NAZCA IC CXD4701GB
AUDY IC CXD9722ATQ
SILVIA IC CXD9779R
VIDEO DEC IC TVP5146 (Euro)
IC TVP 5147 (U/C)
AV ENC IC UPD61052GD
MR IC CXD9777GG
AV DEC IC CXD1935Q
EEPROM IC CAT24WC32W
NAND FLASH IC K9F2808U0C
SRC IC AK4122
DV IC UPD728938BGD
All parts are mounted on the RD-50 assembly board.
Note: Do not execute 4) NAND Factory Setup in the 3)TEST MODE menu.
(This item is dedicated for Factory use.)
Otherwise, the memory data is deleted and the setting cannot be
recovered.
All manuals and user guides at all-guides.com
SECTION 6

SERVICE MODE

REF
IC501
IC1301
IC1501
IC803
IC702
IC901
IC1101
IC1202
IC111
IC402
IC1001
IC2102
6-1
When NG is displayed as the result of the DEVICE TEST, the IC or
its peripheral is defective. When NG is displayed on the PATH TEST,
defect exists in between ICs.
RDR-GX300