1 Service Note
1.1. Background
The following list of models has been improved with the over voltage protection sensing voltage changing from +/-30V to 30V
(ground to -30V):
(A) SA-HT545GN-S (MD0605179C3)
(B) SA-HT895GN-S (MD0605183C3)
(C) SA-HT995GN-S (MD0605203C3)
Below reflects the changes to the necessary parts in Main P.C.B: -
Part Number
Model No.
Refer No.
Original Part No.
New Part No.
Part Name & Descriptions
Remarks
SA-HT895GN-S,
SA-HT995GN-S
C5713
ECJ1VB1H102K
ECJ1VB1H104K
CAPACITOR
CHANGE [M]
SA-HT545GN-S,
SA-HT895GN-S,
SA-HT995GN-S
D2900
B0BC035A0007
B0BC010A0007
ZENER DIODE
CHANGE [M]
SA-HT545GN-S,
SA-HT895GN-S,
SA-HT995GN-S
R5729
ERJ6GEYJ103V
ERDS2TJ562T
RESISTOR
CHANGE [M]
SA-HT545GN-S,
SA-HT895GN-S,
SA-HT995GN-S
RW20
-
REU35R055CC
WIRE
ADD [M]
[M] indicates parts that are supplied by PAVCSG.
Suffix No. Change Information:
(A) SA-HT545GN-S : From “C” To “D”. (Main/Power P.C.B Part No. REPX0536A)
(B) SA-HT895GN-S: From “F” to “G”. (Main/Power P.C.B Part No. REPX0507D)
(C) SA-HT995GN-S: From “F” to “G”. (Main/Power P.C.B Part No. REPX0542A)
2 Parts replacement Procedure
Step 1: Remove chip resistor, R5729 (ERJ6GEYJ103V) from the Main P.C.B.
Step 2: Replace the chip resistor, R5729 with discrete part (ERDS2TJ562T) by back-solder. Connect the discrete resistor from pin
1 of PC5701 to ground by wire (REU35R055CC). Apply bond after the back-solder of the part.
2
-HT545GN / SA-HT895GN / SA-HT995GN
