Service Mode; Device Relation Diagram; Display Data (For Your Reference To Check The Signal Path) - Sony RDR-GX7 Service Manual

This is the diagnostics to locate the faulty position.
The diagnostics can be executed using the remote commander (Remote Control Mode1) and a monitor.
To execute the diagnostics mode, connect the VIDEO OUT (L2 OUT) connector to a monitor. While pressing INPUT SELECT, REC
MODE and STOP of the main unit, connect the AC power cord to the power outlet to start the diagnostics.
Keep pressing INPUT SELECT, REC MODE and STOP of the main unit (about 10 seconds) until the diagnostics screen appears on 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 remote commander (DVD1) keys or the keys on the front panel of the main unit to operate the diagnostics.
6-1.

Device relation diagram.

Display data (for your reference to check the signal path)

Video signal
Audio signal
VIDEO
DECODER
ADC
DAC
VIDEO
ENCODER CONVERTER
Checking item
VIDEO ENC IC ADV7300AKST
IP CONV IC CXD9698R
TL750 IC TL750B5
GTR IC CXD9735Q
FBI IC CXD9537AR
VIDEO DEC IC SAA7118E/V1.518
AVENC IC UPD61052GD-LML
MSP IC CXD9736GG
AVDEC IC CXD1935Q
IC UPD72852GB-8EU
DV
IC UPD72893GD-LML
CPRM
IC CXD9754R
CCM
EPGSLICER IC TC90A73U
GEMSTAR IC UPD65881GB-072-8ES
All parts are mounted on the RD045M'T assembly.
SECTION 6

SERVICE MODE

IP
TL750
IC name REF
IC2303
IC2301
IC1402
IC701
IC1301
IC2202
IC903
IC1101
IC1203
IC2001
IC2102
IC1001
IC1802
IC1807
Data read
DV
ENCODER
GT R
FBI
DECODER
Data read
If NG is displayed as the result of DEVICE test, IC is defective or
peripheral of the IC is defective.
If NG is displayed as the result of "PATH" test, defect exists in
between ICs.
6-1
AV
MSP
AV
RDR-GX7
Data read