Marantz PM-12 OSE, Service Manual

Page: 29 / 56

1. IC's
SEMICONDUCTORS
R5F100MHAFA (U1001)
PORT TABLE
Pin Port I/O use Name
Port Setting
Note
Act. stby Exit R
1 P141/PCLBUZ1/INTP7 I/O I PROT_1 L - PU 47k DC detection
2 P140/PCLBUZ0/INTP6 I/O I PROT_2 L - PU 47k Power supply fault detection
3 P120/ANI19 I/O O
PRT_
RST
L L PD 10K Output H at startup, reset additional protection circuit
4 P45/SO01 I/O O NC L L -
5 P44/SI01/SDA01 I/O O SDA L L - E2PROM Serial Data Reserve
6 P43/SCK01/SCL01 I/O O SCL L L - E2PROM Serial Clock Reserve
7 P42/TI04/TO04 I/O I HP_DET L - PU 10k Headphone Detection (Detected : L)
8 P41/TI07/TO07 I/O O AMPON H L PD 10k NC500 ON/OFF (ON:H)
9 P40/TOOL0 I/O I/O TEST H - PU 10k L->H : PROGRAM MODE
10 RESET I I RESET L -
PU
4.7k
Reset
11 P124/XT2/EXCLKS I I XT2 - - PD 47k Sub Clock (32.758kHz) Reserve
12 P123/XT1 I I XT1 - - PD 47k Sub Clock (32.758kHz) Reserve
13 P137/INTP0 I I
P_
DOWN
L - PD 47k
Detect Power Down (Power outage detection)
(Primary power supplyON/OFF detection)Monitoring on
power failure L=P_Down detection
14 P122/X2/EXCLK I I X2 - - PD 47k Main System Clock (8MHz) Reserve
15 P121/X1 I I X1 - - PD 47k Main System Clock (8MHz) Reserve
16 REGC - - REGC - - - Regulator Capacitance
17 VSS - - VSS - - - GND
18 EVSS0 - - EVSS0 - - - GND
19 VDD - - VDD - - - 3.3V
20 EVDD0 - - EVDD0 - - - 3.3V
21 P60/SCLA0 I/O O NC L L -
22 P61/SDAA0 I/O O NC L L -
23 P62/SCLA1 I/O I CLIP L - PU 10k NC500 Clip detection (H/L=Normal/Clip)
24 P63/SDAA1 I/O O
Time_
Const
H L PU 10K DC detection time constant switching
H/L = Small time constant/Large time constant
25 P31/TI03/TO03/INTP4 I/O I
SC-
CPIND
L - PU 10k NC500 Overcurrent detection (H/L=Normal/Trigger)
ALC Trigger input
26 P64/TI10/TO10 I/O I RC5_IN L - PU 33k RC5 Capture input
27 P65/TI11/TO11 I/O O
OLED_
P_CONT H L PD 10k OLED VCC ON/OFF (ON/OFF=H/L)
28 P66/TI12/TO12 I/O O
OLED_
DC
- L - OLED(MXS4046A) Data/Command SW
29 P67/TI13/TO13 I/O O
OLED_
RES
L L - OLED(MXS4046A) Reset
30 P77/KR7/INTP11 I/O I INT H -
PD
100k
Input Selector Interrupt
31 P76/KR6/INTP10 I/O I FATAL H - PD 47k NC500 DC detection (H/L=FATAL/Normal)
32 P75/KR5/INTP9 I/O I VOL_B H - PU 10k Volume Rotary Encorder
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
The semiconductor which described a detailed drawing in a schematic diagram are omitted to list.
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
29