Setting the Time on a Nippon Timeboy7 Time Clock: Step-by-Step

The Nippon Timeboy7 (common in Japanese small businesses) uses a membrane keypad. Procedure:

1. Power ON — verify normal display (time/date).
2. Press FUNCTION once → "ADJUST" appears.
3. Press HOUR once → hour digits flash.
4. Use UP / DOWN to set hour (hold for fast scroll). 12-hr format: watch AM/PM.
5. Press MINUTE once → minute digits flash.
6. Use UP / DOWN to set minutes.
7. Press AM/PM once → toggle (if 12-hr mode).
8. Press FUNCTION once → exit adjust mode. Clock saves and runs.

Troubleshooting

• No "ADJUST": Hold FUNCTION 3 sec (some firmware).
• 24-hr mode: Skip AM/PM step; hour 0–23.
• Date setting: Same sequence — press DATE instead of HOUR/MINUTE (model-dependent).
• Backup battery: CR2032 coin cell inside — if dead, loses time on power loss.
• Manual PDF: Search "Nippon Timeboy7 manual" — Japanese/English versions exist.

Takes <30 seconds once you know the dance. The FUNCTION key is the "enter" for each field.