MV-101
18
18
• IC Block Diagrams
– POWER board –
IC2
NJM2360AD
SECTION 4
EXPLODED VIEWS
4-1. OVERALL SECTION
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• Accessories are given in the last of the elec-
trical parts list.
• Please refer to a “SERVICING NOTES” (Page
3) about NTSC type and PAL type foe E
model.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
1
2
3
#1
#3
F901
F902
#2
#2
#2
#2
#2
#2
#2
cabinet front assy
section
case (lower) assy section
+
–
1
CS
3
CT
4
GND
VREF
1.25V
2
ES
Q1
Q2
8 CD
6 V+
5 INVIN
7 SI
Q
S
R
CT OSC
Ipk
COMP
IC3
LM2588T-12
INTERNAL
SUPPLY
VOLTAGE
SOFT– START
+2.9V
REGULATOR
FREQUENCY
ADJUSTMENT
100kHz
OSCILLATOR
DUTY CYCLE
COMPARATOR
ERROR
AMP
AMP
+1.23V
CURRENT
SENSE
CURRECTIV
RAMP
CYCLE-SKIPPING
COMPARATOR
CONTROL
LOGIC
DRIVER
STAGE
CURRENT LIMIT, THERMAL LIMIT,
UNDERVOLTAGE SHUTDOWN
SHUTDOWN
+
–
+
–
+0.3V
+
–
+
2
COMP
6
EXT FREQ
7
VIN
5
SWITCH
3
FEEDBACK
4
GND
1
ON/OFF
The components identified by
mark
0
or dotted line with mark
0
are critical for safety.
Replace only with part number
specified.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-255-475-02 CASE (UPPER)
2
3-255-474-02 CABINET (REAR) (US)
2
3-255-474-11 CABINET (REAR) (AEP, UK)
2
3-255-474-21 CABINET (REAR) (E: NTSC TYPE)
2
3-255-474-41 CABINET (REAR) (E: PAL TYPE)
3
1-827-344-12 CORD, CONNECTION (POWER)
F901
1-532-218-11 FUSE (1A/250V)
F902
FUSE (5A/250V)
#1
7-685-233-14 +K 2.6X6
#2
7-621-770-67 SCREW +B 2.6X6
#3
7-685-545-14 SCREW +BTP 3X6 TYPE2 N-S
Ver 1.2
