Description Of Major Ics - JVC KD-S621 Service Manual

Description of major ICs

HA13164A(IC901) : Regulator
1.Pin layout
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2.Block diagram
ANT OUT
C3
0.1u
EXT OUT
C4
0.1u
ANT CTRL
CTRL
CD OUT
C5
0.1u
AUDIO OUT
C6
10u
3.Pin function
Pin No. Symbol
1 EXT
2 ANT
3 ACC
4 VDD
5 SW5V
6 ACC5V
7 ANT CTRL
8 MEMORY
9 BATT DET
10 9V
11 CTRL
12 CD8V
13 AJ
14 ILMI
15 GND
VCC
Surge Protector
2
1
7
11
12
10
GND
Output voltage is VCC-1 V when M or H level applied to CTRL pin.
Output voltage is VCC-1 V when M or H level to CTRL pin and H level
to ANT-CTRL.
Connected to ACC.
Regular 5.7V.
Output voltage is 5V when M or H level applies to CTRL pin.
Output for ACC detector.
L:ANT output OFF , H:ANT output ON
Connected to VCC.
Low battery detect.
Output voltage is 9V when M or H level applied to CTRL pin.
L:BIAS OFF, M:BIAS ON, H:CD ON
Output voltage is 8V when H level applied to CTRL pin.
Adjustment pin for ILM output voltage.
Output voltage is 10V when M or H level applies to CTRL pin.
Connected to GND.
C1 C2
100u 0.1u
ACC
8
3
BIAS TSD
15 13
ILM AJ
note1) TAB (header of IC)
connected to GND
Function
+B
ACC
BATT.DET OUT
9
COMPOUT
6
VDD OUT
4
C7
0.1u
SW5VOUT
5
ILMOUT
14
C8
0.1u
R1
UNIT R:
C:F
KD-S621
1-15