Advertisement
PARTS CATALOGUE
Remarks:
15 Liquid crystal panel
The type of liquid crystal panel is determined based on the design of cases. Check the case number and
refer to the "SEIKO WATCH SERVICE SITE Parts Catalogue" to choose a corresponding liquid crystal
panel.
TECHNICAL GUIDE
• The explanation here is only for the particular points of Cal. S140A and S143A.
• For repairing, checking and measuring procedures, refer to the "TECHNICAL GUIDE, GENERAL
INSTRUCTIONS".
I.
STRUCTURE OF THE CIRCUIT BLOCK
C-MOS-LSI
Crystal unit
II.
REMARKS ON BATTERY REPLACEMENT
• Remarks on installing the battery
· Keep the battery level while installing it lest it should
touch the circuit block cover.
· Be careful not to short-circuit the battery connection (–)
and the circuit block cover. If this occurs, the display may
remain blank after the battery is installed.
* If the display remains blank, wait until the battery voltage
returns to the normal level. The normal display will
return.
4520 582 (S141)
4520 504 (S143)
Cal. S141A
Input terminal (+)
Input terminal (–)
C-MOS-LSI
Input terminal (–)
Jack lead terminal
Example of short circuit
- 3 -
Cal. S141A, S143A
Cal. S141A, S143A
Cal. S143A
Input terminal (+)
Advertisement
