سرفس مود - GRAETZ

GRAETZ GR33TL6S
Chassis BEKO 20.2
Log into the service mode: - With Remote Control RC-5 - Click "CONTRAST DOWN"

GRAETZ GR7439
CPU: 8827CPNG 4V8
Log into the service mode:
1) Set the volume at "0"
2) Press simultaneously "DISPLAY" (rectangle "C +") and "VOL DOWN" on the local keyboard until the "S"

GRAETZ GR-29D41
Chassis H-704V-05, H-707V-02.2
CPU: SDA555XFL
Log into the service mode:
In
operating mode, press the sequence: "DISP" - "MUTE" - "SLEEP" - "FUZZY"
- "DISP", or "DISPLAY" - "MUTE" - "SLEEP" - "FUZZY" - "TIMER"