Appendix
AP4-5
Model PCB type ROM Version No. ROM type Note
05P0271
(CPU)
U1 05-501-20-1xx
HD637B01YOP
(Mask)
RT
FS-1501
05P0278
(COUP)
U8 05-501-21-1xx HD63B01Y0E76P
AT-1500
(05S0522-0)
05P0271
(CPU)
U1 05-501-20-1xx
HD637B01YOP
(Mask)
RT
FS-1500
05P0278
(COUP)
U8 05-501-21-1xx HD63B01Y0E76P
AT-1500
(05S0522-0)
05-501-47-1xx
CONTROL
For FS
series SSB RT
RB-500
05P0483
(MAIN)
U2
05-501-60-1xx
M5M27C100K-15
CONTROL
For RC-508
series console
RB-700
05P0483A
(MAIN)
U2 05-501-46-1xx M5M27C100K-15 CONTROL
IF-8500
05P0640
(CPU)
U1 05-501-86-1xx HD647180X0FS8L CONTROL
08P3151
(MAIN)
U8 08-501-50-1xx HD63B01YOREBOP
Mask ROM
(08S0247-1)
NX-500
08P3119A
(NAVTEX)
U2 08-501-51-1xx HD63B01YOREJ4P
Mask ROM
(08S0248-1)
05P0258
(CONT)
U8 05-501-18-1xx M27C512-10F1 CONTROL
RV-
128G/118G
05P0261
(I/F)
U3 05-501-19-1xx MBM27C64-30 I/F