Interm pa 920 935 amp

Page 1

SERVICE
MANUAL

AMPLIFIER

PA- 92 0/935

InterM

Page 2

1 I 2 3 I 4 5 I 6

APPLICANT REVISED NUMBER AND DATE 8 DRAWN CHECKED APPROVED NOTE SIZE SHEET No.
comm INTERM 4 7 SCHEMATIC DIAGRAM
TYPE CODE M P
_ z. 5. a. G A 3 I / I
APPROVED DATE 03.0.19 3. s. 9. N AicND CHGND DRGND MODEL PAM 920
cmos MASTER
1 P VOLUME
INPUT 2,01 R1043 CONID7-A CDNID7-E B' 1:
W 1:13: 115.9
cm Jog/0275 mo IUD/25
RID} CR123 CR126
- @_ 0011101 ,_ 101450 550 c105 5' 5p? 1qu
mm 2? W S10/51: .- ..
211117 0 1 m, RIDE c122 RI35 ,
+ @- » ,, 515. R104 1c1o1-a 17121131 IOK 1/30 1,2K :1 5125 ms Itosuga:
10/50 560 R105 ASSED IOKE w 4 7450 1,3K I 0125
W 1o1< 017111 J N VI 1/51)
E
V 15$ v N
v v v cRmz 3151: "54 . mas-A c 14 R137 0
IDODP
coN1oz 11113112102 cmm cm) W 0113 IZK 303 30 A5550 11m) 100 150 223511
_ _ ,_ 1ox101< wow 04? 550 1 m > 005
0 N 7 10/50 cm 5 mm 3
M11229 - I c 100/25 2- gm 3 7 1*: R412 995
1 : 4 c P. T
+ 7 J, 15 R112 4 MICZ vmosmokw RIB5 1013/25 3 c: 3 3 mo OUTPUT
0111 7 RIIS 100 cm '17: 1 X La A
10/50 560 112101 A 0 3;?
R153 55 m W 31 £11135 cop R4111 com 33 w I R407 g E RIAII r1 I;
w 1 ¢ co
1 v 01519 5 :: cRuz W W m M 0-3;? I? 33 331 ° ° 0.5%1 K o
I I \ u: a
v v v v R122 VIBISBZ g RHI up no 02 E 2' °
Rm RIID cmoa smog 15K 0 15K 0405 i c: ° ° o
7 . c133 R146 12" 2 0407
COMM IDK IGK 1050? 113001: 0117 R? o I 1 A m . "52? 4-7/50 a "£5 KIDQQB 0
10450 560 A CIZD R143 R142 Rm m 7 N mag R414
:- w 10 50 30K 10x 30K m. f 31435 0 3 R408 4,71< 111 m 5/.
0 . .4 s ,1 ASSBD mot-B 4.7 so LRlIs
p" x 4 7K
C115 R120 L, :9 USED 0 21/50 0 47/
cm; Mm :g H 1-. gm R405 ows r1 '
III/50 5'60 Assan n- vm: 7* 53 W5 CIEI g3 ZSA 965V
:: RIZI ,er IOKE j: < 101) V 1011/25 . '
15K v 0121 ' E! w- d ZDI u
0/25 3203 R9211: ° 11)an 2 10%| {5 uz IBEM R100}
vmm
372117 IOK IOK 11mm: mom:
,, R125 . &
:_|'8K msI R117 m - AC 120v 50111
a W 820 R|7E 90 1.2A
I RIZE 39K RIBI szl 0
° RI77 23030 56K 1010;; 3
18K c154 R134
:_I I W9 . 10,450 1.3K oé
J7 WA} 52 N 212212750 21M ; c1103
CON105 . c1101 - V N: TC mam
KTC 3195121 W k a; mag 0"
g I5K 259 130211
RUB -» RI79 x
5 8K CI 221) D101 3:: 146 RIBS
J7 mow/100w) INNS 1110/15 56K v 7 RI67
v v n 1 1° 4
U A L
L 0152 1
C155 1:154
ggg - R173 c,1/mo(M)T 100/25 DO/55
R 52 R154 '00
CR104P5 155 mm 39K CISD 5,6K 5V RI76 R175 L 0157 c153
Q1 M 2.2M Mes/100m) IZK 390K 0.I/I00(M) c155 :3 2200/35 g
m5. c143 " I 0 Rm 1130 25
,, 1.2x 0.47450 01024 0147 RISE c175 005 mos D105 53 1 / "
f, .4. - 55, B 1/30 12x °'°65/°?(I KTC mam 11141411 11141415 mga Dm
OPI . 4r: .1 4 R150 ' E g - R172 270 N 111 4006
,, l w SVRZ 59 "K m; 4 g g g may DIN 0105 12K R170
W R152 0 KB 4 7K 16 E 5' 92 251) 13021? mus . KTAZEEY . . 5'5
5* 1.2K 7/5" In 09 9 DIM a E m (6'
3 R155 > " N41! N 3 1130/25
Rm -0 I57 o_ u N c1 9 R171 LED E D
4.7x we mo IK av ;v v v 1013;25 470
v V R163
R149 RI50 cRm CRMZ 330K
1,21< 1.2x 0.11047 a nun

t SERVICE INFORMATION

I. RESISTANCE VALUE ARE INDICATED IN OHMS UNLESS OTHERWISE SPECIFIED.

2. CAPACITANCE VALUE ARE SHOWN IN MICROFARADS UNLESS OTHERWISW NOTED.
3. ALL VOLTAGES ARE REFERED TO GROUND UNDER THE FOLLOWING CONDITIONS.

000. M=I.DDO.DDO)
r ICRO-MICROFARADS)

0.0047 I

m
FUSE 0.75A
1.

AC : RMS
4. *PRECAUTIONi AC 240V
A) ALL CPMPONENTS MARKED MUST BE REPLACED ONLY WITH ORIGINAL TYPE SPECIFIED BY THE
MANUFACTURER. INTER M COPORATION AND INSTALLED AS THE AS THE ORIGINAL SPACERS

AND POSITIONED AWAY FORM ADJACENT COMPONENTS WHERE APPLICABLE.

ALLSOLDERING MUST BE DONE IN A PROFESSIONAL MANNER USING SOLDER WHITE RESINE CORE ONLY.

ALL COVERS. SHIELD AND INSULATING SPACERS MUST BE REPLACED RETURING APPLIANCE T0 CUSTOMER.

A DAMAGE POWER SUPPLY CORD MUST BE REPLACED BEFORE RETURING TO CUSTOMER,

DIELECTRIC TEST CONSISTING OF IZOV AC GDHZ IS TO BE APPLIED BETWEEN BOTH BALDES OF THE POWER
SUPPLY CORD ATTACHMENT PLUG THE EXPOSE CONDUCTIVE SURFACE OF THE APPLIANCE FOR A PERIOD OF
NOT LESS THAN ONE SECOND BEFORE RETURING APPLIANCE TO CUSTOMER.

F) THE MMARKED RESISTORS ARE MOUNTED THE P.C.E ON SLEEVES.

munm