Toshiba Estudio 162 Owners Manual

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 7
(4) Reset circuit
This circuit detects ON/OFF of the power source, and controls start/
stop of each circuit. The voltage of 3.3V in the MCU PWB is detected
by the reset IC to generate the reset signal.
When the power voltage reaches the specified level, each circuit is
operated, but stopped before the power voltage falls below the speci-
fied level in order to protect against malfunction of the circuit. The
CPU/Flash ROM is reset by the power reset...

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 8
(5) Heater lamp control circuit
a. Outline
The heater lamp control circuit detects the heat roller surface tempera-
ture, and converts the temperature into a voltage. The converted volt-
age is inputted to the CPU.The CPU converts the inputted analog voltage into a digital value. The
digital conversion value and the set value of the test command are
compared to control ON/OFF of the heater lamp according to the level,
controlling the heat roller...

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 9
(7) Toner motor control circuit
The IC32 is the motor drive IC, which generates pseudo-AC wave-
forms by the pulse signal from the ASIC to drive the toner supply
motor.
(8) Main motor control circuit/ LSU (Polygon motor) 
control circuit
The motors are driven by the MMD (main motor) signal and the PMD
(polygon motor) signal from the ASIC.
The MMD signal and the PMD signal are turned HIGH and sentthrough the driver IC27 to the control circuit in the...

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 10
C116
820p 12
C117
820p
1 2C118
820p1 2
C121
0.1u1 2
C115
820p12
C119
0.1u
1 2
R92
1.5kJ
21
R90
0.68J
1W2 1
R94
30kJ
21
R95
30kJ
21
R91
1.5kJ
21
R89
0.68J
1W2 1
R98
510J
21
R97
1kJ
21
R96
2kJ
21
R93
1kJ
21
IC29
L6219DS or AMM56219
OUT 2A 2
SENSE 2 3
COMP 2 4
OUT 2B 5
GND 6
GND 7
I02 8
I12 9
PHASE 2 10
VREF 2 11
RC 2 12
VSS13 RC 114 VREF 115 PHASE 116 I1117 GND18 GND19 I0120 OUT 1B21 COMP 122 SENSE 123 VS24
OUT 1A 1
5V
24VM 5V
5VPGND
PGND
PGNDPGNDPGND...

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 11
(10) OPE PWB
a. Outline
The operation circuit is composed of the LCD control circuit, the key
matrix circuit, the display matrix circuit, and the buzzer circuit, realizing
the U/I functions.  
b. LCD control circuit
The character LCD (COG) in 2 lines and 16 digits is used. The display
data are sent from the MCU (CPU) to LCD internal registers, control-
ling the LCD.
c. Key matrix circuit
The SEL signal is sent from the CPU of MCU to the matrix...

e-STUDIO162/162D/151/151D ELECTRICAL SECTION  13 - 12 Since the AC power is directly rectified, if there were not this rush cur-
rent prevention resistor (TH001), an extremely large rush current
would flow due to a charging current flowing through the smoothing
capacitor C006 when turning on the power. 
To prevent against this, the rush current prevention resistor TH001 is
provided between the rectifying diode D003 and the smoothing diode
C006, suppressing a rush current.
The rectifying/smoothing circuit...

e-STUDIO162/162D/151/151D CIRCUIT DIAGRAM  14 - 1
[14] CIRCUIT DIAGRAM
1. MCU PWB
MCU PWB (CPU section)
C24
0.1u
C4
12p
R11 10kJ
R5
0J
BR20
33J
1
2
3
48
7
6
5
R18
11 k F
C25
47p
R20
10kF
BR21
33J
1
2
3
48
7
6
5
R19
3.3kJ
IC2
HD6412321VF25(H8S/2321)
P35/P34/P33/P32/P31
P30/PD7PD
PD5PD4PDPD2PDPDPEPEPEPEPEPEP
PE
AV c c 103
Vref 104
P40/AN0 105
P41/AN1 106
P42/AN2 107
P43/AN3 108
P44/AN4 109
P45/AN5 11 0
P46/AN6/DA0 111
P47/AN7/DA1 11 2
AV s s 11 3
Vss 11 4
P17/PO15/TIOCB2/TCLKD 11 5
P16/PO14/TIOCA2 11 6...

e-STUDIO162/162D/151/151D CIRCUIT DIAGRAM  14 - 2
C9 0.1uC14 0.1u
BR8
10kJ 1
2
3
48
7
6
5
BR10
10kJ 1
2
3
48
7
6
5
BR5
10kJ 1
2
3
48
7
6
5
H8S/2321 P35/SCK164
P34/SCK063
P33/RxD162
P32/RxD061
P31/TxD160
P30/TxD059
VCC58
PD7/D1557
PD6/D1456
PD5/D1355
PD4/D1254
Vss53
PD3/D1152
PD2/D1051
PD1/D950
PD0/D849
PE7/D748
PE6/D647
PE5/D546
PE4/D445
Vss44
PE3/D343
PE2/D242
PE1/D141
PE0/D040
VCC39
/QP64/IRQ038Q
Vss
65
BR7
10kJ 1
2
3
48
7
6
5
BR9
10kJ 1
2
3
48
7
6
5
C6
100p
BR11
10kJ 1 2
3 4
8 7
6 5
R15 1kJ
BR14
33J...

e-STUDIO162/162D/151/151D CIRCUIT DIAGRAM  14 - 3
A
AB
BC
C 4
3
2
1
(14-D3) (1-D2),(14-D3)
(14-A3)
(14-A4) (14-D3)
(14-A2) (14-A2) (14-D3)
(14-D3) (14-A2)
(14-A2)
(14-A2) (14-A2)
(5-B1) (5-B1)
(6-B3)
(6-B3)
(6-B3)
(6-B3)
(6-B3)
(6-B3) (5-B1)
(3-E2)(3-E3)(3-D2) (3-D2)
(3-D2) (3-D2)
(3-D2)
(3-D2) (3-D2) (3-E1)
(3-E2) (3-E2)
(1-D2)
(1-C1)
(5-B1)(1-A2) (4-C3)
(1-D2) (1-D2)
(1-B3) (1-B3)
(1-B1)(5 B1)
(3-A1)(4-A2) (13-C2)
(3-A3)
(3-A2) (13-B2)
(8-A1)
(4-C1)(1-B1)
(9-B2)(3-B2)
MCU PWB (ASIC section)
RAMDB0...

e-STUDIO162/162D/151/151D CIRCUIT DIAGRAM  14 - 4
C
CD
DE
E4
3
2
1
(1-B3)
(1-A2) (1-A2)
(12-A3)
(4-C3) (4-C3)
(4-C3)
(4-C2)
(4-C2)
(4-D4)
(5-B1)
(5-B1)
(5-B1)
(5-B4)
(5-B4)
(5-B4)
(5-B3)
(5-B3)
(5-B2)
(5-B2)
(5-B2)
(5-B2)
(5-B3)
(5-B3) (5-B3)
(5-B2) (5-B3) (4-C2) (4-C2)
(4-C1)(4-A1)
(4-C2) (4-C2) (4-C2)(8-A2) (4-C3)(12-A3)(8-A2) (8-A2) (8-A2)
(8-A4) (8-A2) (8-A4) (8-A4) (8-A2) (8-A2) (8-A4)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(12-A3)
(5-B4)
(5-B3)
(9-B2)
2/14
PIDATA4 PIDATA0...